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             AUSCERT External Security Bulletin Redistribution

                              ESB-2020.3642.3
         Cisco Adaptive Security Appliance Software and Firepower
                  Threat Defense Software Vulnerabilities
                               29 June 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco Adaptive Security Appliance Software
                   Cisco Firepower Threat Defense Software
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote/Unauthenticated      
                   Cross-site Scripting            -- Remote with User Interaction
                   Unauthorised Access             -- Remote/Unauthenticated      
                   Reduced Security                -- Remote/Unauthenticated      
                   Access Confidential Data        -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-3583 CVE-2020-3582 CVE-2020-3581
                   CVE-2020-3580 CVE-2020-3578 CVE-2020-3572
                   CVE-2020-3564 CVE-2020-3561 CVE-2020-3555
                   CVE-2020-3554 CVE-2020-3529 CVE-2020-3528
                   CVE-2020-3458 CVE-2020-3436 CVE-2020-3373
                   CVE-2020-3304  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-dos-QFcNEPfx
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ftpbypass-HY3UTxYu
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-frag-memleak-mCtqdP9n
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ospflls-37Xy2q6r
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-sipdos-3DGvdjvg
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-sslvpndma-dos-HRrqB9Yx
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-tcp-dos-N3DMnU4T
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webdos-fBzM5Ynw
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-fileup-dos-zvC7wtys
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-xss-multiple-FCB3vPZe
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-crlf-inj-BX9uRwSn
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-rule-bypass-P73ABNWQ
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-sbbyp-KqP6NgrE

Comment: This bulletin contains thirteen (13) Cisco Systems security 
         advisories.

Revision History:  June    29 2021: Vendor updated advisory "cisco-sa-asaftd-xss-multiple-FCB3vPZe" to indicate public exploit code available and being actively exploited
                   October 26 2020: vendor updated cisco-sa-fxos-sbbyp-KqP6NgrE
                   October 22 2020: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software Denial of Service Vulnerability

Priority:        High

Advisory ID:     cisco-sa-asaftd-dos-QFcNEPfx

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     Yes

Cisco Bug IDs:   CSCvt35897

CVE-2020-3554    

CWE-400

CVSS Score:
8.6  AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X

Summary

  o A vulnerability in the TCP packet processing of Cisco Adaptive Security
    Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software
    could allow an unauthenticated, remote attacker to cause a denial of
    service (DoS) condition on an affected device.

    The vulnerability is due to a memory exhaustion condition. An attacker
    could exploit this vulnerability by sending a high rate of crafted TCP
    traffic through an affected device. A successful exploit could allow the
    attacker to exhaust device resources, resulting in a DoS condition for
    traffic transiting the affected device.

    Cisco has released software updates that address this vulnerability. There
    are workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-dos-QFcNEPfx

    This advisory is part of the October 2020 Cisco ASA, FMC, and FTD Software
    Security Advisory Bundled Publication, which includes 17 Cisco Security
    Advisories that describe 17 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: October 2020 Cisco
    ASA, FMC, and FTD Software Security Advisory Bundled Publication .

Affected Products

  o Vulnerable Products

    This vulnerability affects vulnerable releases of Cisco ASA Software and
    Cisco FTD Software.

    For information about which Cisco software releases are vulnerable, see the
    Fixed Software section of this advisory.

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Indicators of Compromise

  o A device may have been exploited by this vulnerability if the show blocks 
    command indicates a leak of 9344-byte memory blocks. The device may stop
    passing traffic or performance could degrade due to this memory leak. In
    this example, the memory blocks of 9344 bytes are leaked, resulting in zero
    (0) blocks being available.

        # show blocks
          SIZE    MAX    LOW    CNT
             0   1450   1448   1450
             4    100     99     99
            80   1000    950    984
           256   4148   3898   4040
          1550   6279   6184   6258
          2048    600    598    600
          2560    164    164    164
          4096    100    100    100
          8192    100    100    100
          9344    60000    0      0
         16384    102    102    102
         65536     16     16     16


    Contact the Cisco Technical Assistance Center (TAC) if additional
    assistance is required to determine whether the device has been impacted by
    exploitation of this vulnerability.

Workarounds

  o As a workaround, an administrator may implement the fragment reassembly
    full [interface-name] command. There may be a performance impact when
    implementing this command.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
    /en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    In the following table(s), the left column lists Cisco software releases.
    The center column indicates whether a release is affected by the
    vulnerability described in this advisory and the first release that
    includes the fix for this vulnerability. The right column indicates whether
    a release is affected by any of the vulnerabilities described in this
    bundle and which release includes fixes for those vulnerabilities.

    Cisco ASA Software

    Cisco ASA    First Fixed Release  First Fixed Release for All the
    Software     for This             Vulnerabilities Described in the Bundle
    Release      Vulnerability        of Advisories
    Earlier than Not vulnerable.      Migrate to a fixed release.
    9.6 ^1
    9.6 ^1       Not vulnerable.      9.6.4.45
    9.7 ^1       Not vulnerable.      Migrate to a fixed release.
    9.8          Not vulnerable.      9.8.4.29
    9.9          Not vulnerable.      9.9.2.80
    9.10         Not vulnerable.      9.10.1.44
    9.12         9.12.4.3             9.12.4.4
    9.13         9.13.1.13            9.13.1.13
    9.14         9.14.1.10            9.14.1.30

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco FTD    First Fixed Release  First Fixed Release for All the
    Software     for This             Vulnerabilities Described in the Bundle
    Release      Vulnerability        of Advisories
    Earlier than Not vulnerable.      Migrate to a fixed release.
    6.2.2 ^1
    6.2.2        Not vulnerable.      Migrate to a fixed release.
    6.2.3        Not vulnerable.      Migrate to a fixed release.
    6.3.0        Not vulnerable.      Migrate to a fixed release.
    6.4.0        6.4.0.10             Migrate to a fixed release.
    6.5.0        6.5.0.5 (future      Migrate to a fixed release.
                 release)
    6.6.0        6.6.1                6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found by Santosh Krishnamurthy of Cisco during
    internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

Related to This Advisory

  o Cisco Event Response: October 2020 Cisco ASA, FMC, and FTD Software
    Security Advisory Bundled Publication

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-dos-QFcNEPfx

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software FTP Inspection Bypass Vulnerability

Priority:        Medium

Advisory ID:     cisco-sa-asaftd-ftpbypass-HY3UTxYu

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvt13445

CVE-2020-3564    

CWE-284

CVSS Score:
5.8  AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:X/RL:X/RC:X

Summary

  o A vulnerability in the FTP inspection engine of Cisco Adaptive Security
    Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software
    could allow an unauthenticated, remote attacker to bypass FTP inspection.

    The vulnerability is due to ineffective flow tracking of FTP traffic. An
    attacker could exploit this vulnerability by sending crafted FTP traffic
    through an affected device. A successful exploit could allow the attacker
    to bypass FTP inspection and successfully complete FTP connections.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-ftpbypass-HY3UTxYu

Affected Products

  o Vulnerable Products

    At the time of publication, this vulnerability affected devices if they
    were running a vulnerable release of Cisco ASA Software or FTD Software and
    had strict FTP inspection enabled.

    For information about which Cisco software releases were vulnerable, see
    the Fixed Software section of this advisory. See the Details section in the
    bug ID(s) at the top of this advisory for the most complete and current
    information.

    Determine Whether FTP Inspection Is Enabled on an ASA

    To determine whether FTP inspection is enabled on an ASA, use the show
    running-config policy-map command and then the show running-config
    service-policy command.

    Use the show running-config policy-map command and check whether the
    inspect ftp strict command is present in at least one policy map. In the
    following output, the global-policy policy map includes the inspect ftp
    strict command:

        asa# show running-config policy-map
        !
        policy-map global_policy
         class inspection_default
          inspect ip-options
          inspect netbios
          inspect rtsp
          inspect sunrpc
          inspect tftp
          inspect xdmcp
          inspect dns preset_dns_map
          inspect ftp strict
          inspect h323 h225

    Use the show running-config service-policy command and check whether the
    policy map is applied, either globally or to a single interface. The
    following output shows the global-policy policy map applied globally:

        asa# show running-config service-policy
        service-policy global_policy global

    If the policy map that contains the inspect ftp strict command is applied
    globally or to an interface, strict FTP inspection is enabled.

    Determine Whether FTP Inspection Is Enabled on FTD

    Configuring inspect ftp strict on FTD requires the use of FlexConfig. To
    determine if inspect ftp strict is enabled on an FTD device, Secure Shell
    (SSH) to the management interface of the device and use the process
    previously outlined for the ASA.

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Fixed Releases

    At the time of publication, the release information in the following table
    (s) was accurate. See the Details section in the bug ID(s) at the top of
    this advisory for the most complete and current information.

    The left column lists Cisco software releases, and the right column
    indicates whether a release was affected by the vulnerability described in
    this advisory and which release included the fix for this vulnerability.

    Cisco ASA Software

    Cisco    First Fixed
    ASA      Release for
    Software This
    Release  Vulnerability
    Earlier  Migrate to a
    than 9.6 fixed
    ^1       release.
             Migrate to a
    9.6 ^1   fixed
             release.
             Migrate to a
    9.7 ^1   fixed
             release.
    9.8      9.8.4.26
    9.9      9.9.2.80
    9.10     9.10.1.44
    9.12     9.12.4.2
    9.13     9.13.1.13
    9.14     9.14.1.19

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco    First Fixed
    FTD      Release for
    Software This
    Release  Vulnerability
    Earlier  Migrate to a
    than     fixed
    6.2.2 ^1 release.
             Migrate to a
    6.2.2    fixed
             release.
             Migrate to a
    6.2.3    fixed
             release.
             6.3.0.6
    6.3.0    (future
             release)
    6.4.0    6.4.0.10
             6.5.0.5
    6.5.0    (future
             release)
    6.6.0    6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-ftpbypass-HY3UTxYu

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software IP Fragment Memory Leak Vulnerability

Priority:        High

Advisory ID:     cisco-sa-asaftd-frag-memleak-mCtqdP9n

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvu47925

CVE-2020-3373    

CWE-400

Summary

  o A vulnerability in the IP fragment-handling implementation of Cisco
    Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat
    Defense (FTD) Software could allow an unauthenticated, remote attacker to
    cause a memory leak on an affected device. This memory leak could prevent
    traffic from being processed through the device, resulting in a denial of
    service (DoS) condition.

    The vulnerability is due to improper error handling when specific failures
    occur during IP fragment reassembly. An attacker could exploit this
    vulnerability by sending crafted, fragmented IP traffic to a targeted
    device. A successful exploit could allow the attacker to continuously
    consume memory on the affected device and eventually impact traffic,
    resulting in a DoS condition. The device could require a manual reboot to
    recover from the DoS condition.

    Note: This vulnerability applies to both IP Version 4 (IPv4) and IP Version
    6 (IPv6) traffic.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-frag-memleak-mCtqdP9n

    This advisory is part of the October 2020 Cisco ASA, FMC, and FTD Software
    Security Advisory Bundled Publication, which includes 17 Cisco Security
    Advisories that describe 17 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: October 2020 Cisco
    ASA, FMC, and FTD Software Security Advisory Bundled Publication .

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco products if they are running Cisco FTD
    Software Release 6.6.0.1 or one of the following Cisco ASA Software
    releases:

       9.8.4.22
       9.8.4.25
       9.12.4.2
       9.12.4.3
       9.13.1.12
       9.14.1.15

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Indicators of Compromise

  o A device may have been compromised by this vulnerability if the show blocks
    command indicates a leak of larger-size memory blocks (2,048 or above). If
    there is a memory leak, the device could stop passing traffic or
    performance could degrade. In the following example, the memory blocks of
    size 9344 have leaked to the point where there are 0 blocks available:

        # show blocks
          SIZE    MAX    LOW    CNT
             0   1450   1448   1450
             4    100     99     99
            80   1000    950    984
           256   4148   3898   4040
          1550   6279   6184   6258
          2048    600    598    600
          2560    164    164    164
          4096    100    100    100
          8192    100    100    100
          9344    60000    0      0
         16384    102    102    102
         65536     16     16     16

    Contact the Cisco Technical Assistance Center (TAC) if additional
    assistance is required to determine whether a device has been compromised
    by exploitation of this vulnerability.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
    /en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    In the following table(s), the left column lists Cisco software releases.
    The center column indicates whether a release is affected by the
    vulnerability described in this advisory and the first release that
    includes the fix for this vulnerability. The right column indicates whether
    a release is affected by any of the vulnerabilities described in this
    bundle and which release includes fixes for those vulnerabilities.

    Cisco ASA Software

    Cisco ASA    First Fixed Release for  First Fixed Release for All
    Software     This Vulnerability       Vulnerabilities Described in the
    Release                               Bundle of Advisories
    Earlier than Not vulnerable.          Migrate to a fixed release.
    9.6 ^1
    9.6 ^1       Not vulnerable.          9.6.4.45
    9.7 ^1       Not vulnerable.          Migrate to a fixed release.
                 9.8.4.26 (only 9.8.4.22
    9.8          and 9.8.4.25 are         9.8.4.29
                 vulnerable)
    9.9          Not vulnerable           9.9.2.80
    9.10         Not vulnerable           9.10.1.44
                 9.12.4.4 (only 9.12.4.2
    9.12         and 9.12.4.3 are         9.12.4.4
                 vulnerable)
    9.13         9.13.1.13 (only          9.13.1.13
                 9.13.1.12 is vulnerable)
    9.14         9.14.1.19 (only          9.14.1.30
                 9.14.1.15 is vulnerable)

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco FTD     First Fixed Release  First Fixed Release for All
    Software      for This             Vulnerabilities Described in the Bundle
    Release       Vulnerability        of Advisories
    Earlier than  Not vulnerable.      Migrate to a fixed release.
    6.2.2 ^1
    6.2.2         Not vulnerable.      Migrate to a fixed release.
    6.2.3         Not vulnerable.      Migrate to a fixed release.
    6.3.0         Not vulnerable.      Migrate to a fixed release.
    6.4.0         Not vulnerable.      Migrate to a fixed release.
    6.5.0         Not vulnerable.      Migrate to a fixed release.
    6.6.0         6.6.1                6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found by Santosh Krishnamurthy of Cisco during
    internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-frag-memleak-mCtqdP9n

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software OSPFv2 Link-Local Signaling Denial of Service Vulnerability

Priority:        High

Advisory ID:     cisco-sa-asaftd-ospflls-37Xy2q6r

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvt83121

CVE-2020-3528    

CWE-400

Summary

  o A vulnerability in the OSPF Version 2 (OSPFv2) implementation of Cisco
    Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat
    Defense (FTD) Software could allow an unauthenticated, remote attacker to
    cause an affected device to reload, resulting in a denial of service (DoS)
    condition.

    The vulnerability is due to incomplete input validation when the affected
    software processes certain OSPFv2 packets with Link-Local Signaling (LLS)
    data. An attacker could exploit this vulnerability by sending a malformed
    OSPFv2 packet to an affected device. A successful exploit could allow the
    attacker to cause an affected device to reload, resulting in a DoS
    condition.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-ospflls-37Xy2q6r

    This advisory is part of the October 2020 Cisco ASA, FMC, and FTD Software
    Security Advisory Bundled Publication, which includes 17 Cisco Security
    Advisories that describe 17 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: October 2020 Cisco
    ASA, FMC, and FTD Software Security Advisory Bundled Publication .

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco products if they are running a vulnerable
    release of Cisco ASA Software or FTD Software and are configured to support
    OSPF routing.

    Note: Devices that are configured for OSPF Version 3 (OSPFv3) only are not
    affected by this vulnerability.

    For information about which Cisco software releases are vulnerable, see the
    Fixed Software section of this advisory.

    Determine Whether OSPF Routing Is Configured on a Cisco ASA Device

    To determine whether OSPF routing is configured on a Cisco ASA device, use
    the show ospf neighbor privileged mode command. If no output is returned,
    OSPF routing is not configured. In the following example, the device is
    configured for OSPF routing:

        asa# show ospf neighbor
        Neighbor ID    Pri    State    Dead Time    Address    Interface
        6.1.1.1        1      FULL/DR  0:00:39      10.1.1.2   outside
        .
        .
        .

    Determine Whether OSPF Routing Is Configured on a Cisco FTD Device

    To determine whether OSPF routing is configured on a Cisco FTD device, do
    one of the following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), choose Devices > Device Management , choose a specific device,
        and then choose Routing > OSPF . If either Process 1 or Process 2 has a
        check mark, OSPF is enabled on the device.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), choose Device > Advanced Configuration > View Configuration >
        Smart CLI > Routing . If there is an object with the type of OSPF ,
        then OSPF is enabled on the device.

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
    /en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    In the following table(s), the left column lists Cisco software releases.
    The center column indicates whether a release is affected by the
    vulnerability described in this advisory and the first release that
    includes the fix for this vulnerability. The right column indicates whether
    a release is affected by any of the vulnerabilities described in this
    bundle and which release includes fixes for those vulnerabilities.

    Cisco ASA Software

    Cisco ASA     First Fixed Release  First Fixed Release for All
    Software      for This             Vulnerabilities Described in the Bundle
    Release       Vulnerability        of Advisories
    Earlier than  Migrate to a fixed   Migrate to a fixed release.
    9.6 ^1        release.
    9.6 ^1        9.6.4.45             9.6.4.45
    9.7 ^1        Migrate to a fixed   Migrate to a fixed release.
                  release.
    9.8           9.8.4.22             9.8.4.29
    9.9           9.9.2.80             9.9.2.80
    9.10          9.10.1.44            9.10.1.44
    9.12          9.12.4.2             9.12.4.4
    9.13          9.13.1.12            9.13.1.13
    9.14          9.14.1.15            9.14.1.30

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco FTD     First Fixed Release  First Fixed Release for All
    Software      for This             Vulnerabilities Described in the Bundle
    Release       Vulnerability        of Advisories
    Earlier than  Migrate to a fixed   Migrate to a fixed release.
    6.2.2 ^1      release.
    6.2.2         Migrate to a fixed   Migrate to a fixed release.
                  release.
    6.2.3         Migrate to a fixed   Migrate to a fixed release.
                  release.
    6.3.0         6.3.0.6 (future      Migrate to a fixed release.
                  release)
    6.4.0         6.4.0.10             Migrate to a fixed release.
    6.5.0         6.5.0.5 (future      Migrate to a fixed release.
                  release)
    6.6.0         6.6.1                6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found by Santosh Krishnamurthy of Cisco during
    internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-ospflls-37Xy2q6r

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software SIP Denial of Service Vulnerability

Priority:        Medium

Advisory ID:     cisco-sa-asaftd-sipdos-3DGvdjvg

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvu15801

CVE-2020-3555    

CWE-404

Summary

  o A vulnerability in the SIP inspection process of Cisco Adaptive Security
    Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software
    could allow an unauthenticated, remote attacker to cause a crash and reload
    of an affected device, resulting in a denial of service (DoS) condition.

    The vulnerability is due to a watchdog timeout and crash during the cleanup
    of threads that are associated with a SIP connection that is being deleted
    from the connection list. An attacker could exploit this vulnerability by
    sending a high rate of crafted SIP traffic through an affected device. A
    successful exploit could allow the attacker to cause a watchdog timeout and
    crash, resulting in a crash and reload of the affected device.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-sipdos-3DGvdjvg

Affected Products

  o Vulnerable Products

    At the time of publication, this vulnerability affected Cisco products if
    they were running a vulnerable release of Cisco ASA Software or FTD
    Software and were configured to perform inspection of SIP traffic.

    For information about which Cisco software releases were vulnerable at the
    time of publication, see the Fixed Software section of this advisory. See
    the Details section in the bug ID(s) at the top of this advisory for the
    most complete and current information.

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Fixed Releases

    At the time of publication, the release information in the following table
    (s) was accurate. See the Details section in the bug ID(s) at the top of
    this advisory for the most complete and current information.

    The left column lists Cisco software releases, and the right column
    indicates whether a release was affected by the vulnerability described in
    this advisory and which release included the fix for this vulnerability.

    Cisco ASA Software

    Cisco ASA Software Release   First Fixed Release for This Vulnerability
    Earlier than 9.6 ^1          Migrate to a fixed release.
    9.6 ^1                       9.6.4.43
    9.7 ^1                       Migrate to a fixed release.
    9.8                          9.8.4.26
    9.9                          9.9.2.80
    9.10                         9.10.1.43
    9.12                         9.12.4.2
    9.13                         9.13.1.13
    9.14                         9.14.1.19

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco FTD Software Release First Fixed Release for This Vulnerability
    Earlier than 6.2.2 ^1      Migrate to a fixed release.
    6.2.2                      Migrate to a fixed release.
    6.2.3                      Migrate to a fixed release.
    6.3.0                      6.3.0.6 (future release)
    6.4.0                      6.4.0.10
    6.5.0                      6.5.0.5 (future release)
    6.6.0                      6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during the resolution of a Cisco TAC support
    case.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-sipdos-3DGvdjvg

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software SSL VPN Direct Memory Access Denial of Service Vulnerability

Priority:        High

Advisory ID:     cisco-sa-asaftd-sslvpndma-dos-HRrqB9Yx

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvu59817

CVE-2020-3529    

CWE-400

Summary

  o A vulnerability in the SSL VPN negotiation process for Cisco Adaptive
    Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD)
    Software could allow an unauthenticated, remote attacker to cause a reload
    of an affected device, resulting in a denial of service (DoS) condition.

    The vulnerability is due to inefficient direct memory access (DMA) memory
    management during the negotiation phase of an SSL VPN connection. An
    attacker could exploit this vulnerability by sending a steady stream of
    crafted Datagram TLS (DTLS) traffic to an affected device. A successful
    exploit could allow the attacker to exhaust DMA memory on the device and
    cause a DoS condition.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-sslvpndma-dos-HRrqB9Yx

    This advisory is part of the October 2020 Cisco ASA, FMC, and FTD Software
    Security Advisory Bundled Publication, which includes 17 Cisco Security
    Advisories that describe 17 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: October 2020 Cisco
    ASA, FMC, and FTD Software Security Advisory Bundled Publication .

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco products if they are running a vulnerable
    release of Cisco ASA Software or FTD Software and have Clientless SSL VPN
    or AnyConnect SSL VPN configured.

    For information about which Cisco software releases are vulnerable, see the
    Fixed Software section of this advisory.

    Determine Whether an SSL VPN Is Configured

    To determine whether Clientless SSL VPN or AnyConnect SSL VPN is enabled on
    a device, use the show running-config webvpn command. The following example
    shows the output of the command for a device that has Clientless SSL VPN or
    AnyConnect SSL VPN enabled:

        cisco# show running-config webvpn
        webvpn
        .
        .
        .
         enable <interface_name>
        .
        .
        .

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Indicators of Compromise

  o Exploitation of this vulnerability could cause an affected device to run
    low on DMA memory. To check whether Free memory is decreasing without
    increasing, use the show memory detail | begin MEMPOOL_DMA command and
    monitor the output, which is shown in the following example:

        device(config)# show memory detail | begin MEMPOOL_DMA
        MEMPOOL_DMA POOL STATS:

        Non-mmapped bytes allocated = 222298112
        Number of free chunks = 162
        Number of mmapped regions = 0
        Mmapped bytes allocated = 0
        Max memory footprint = 222298112
        Keepcost = 3264
        Max contiguous free mem = 3264
        Allocated memory in use = 222259824
        Free memory = 38288

    If the value of the Free memory counter decreases quickly for a sustained
    period of time, administrators are advised to contact the Cisco Technical
    Assistance Center (TAC) for further investigation.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
    /en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    In the following table(s), the left column lists Cisco software releases.
    The center column indicates whether a release is affected by the
    vulnerability described in this advisory and the first release that
    includes the fix for this vulnerability. The right column indicates whether
    a release is affected by any of the vulnerabilities described in this
    bundle and which release includes fixes for those vulnerabilities.

    Cisco ASA Software

    Cisco ASA     First Fixed Release  First Fixed Release for All
    Software      for This             Vulnerabilities Described in the Bundle
    Release       Vulnerability        of Advisories
    Earlier than  Migrate to a fixed   Migrate to a fixed release.
    9.6 ^1        release.
    9.6 ^1        9.6.4.45             9.6.4.45
    9.7 ^1        Migrate to a fixed   Migrate to a fixed release.
                  release.
    9.8           9.8.4.29             9.8.4.29
    9.9           9.9.2.80             9.9.2.80
    9.10          9.10.1.44            9.10.1.44
    9.12          9.12.4.4             9.12.4.4
    9.13          9.13.1.13            9.13.1.13
    9.14          9.14.1.30            9.14.1.30

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco FTD     First Fixed Release  First Fixed Release for All
    Software      for This             Vulnerabilities Described in the Bundle
    Release       Vulnerability        of Advisories
    Earlier than  Migrate to a fixed   Migrate to a fixed release.
    6.2.2 ^1      release.
    6.2.2         Migrate to a fixed   Migrate to a fixed release.
                  release.
    6.2.3         Migrate to a fixed   Migrate to a fixed release.
                  release.
    6.3.0         6.3.0.6 (future      Migrate to a fixed release.
                  release)
    6.4.0         6.4.0.10             Migrate to a fixed release.
    6.5.0         6.5.0.5 (future      Migrate to a fixed release.
                  release)
    6.6.0         6.6.1                6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during the resolution of a Cisco TAC support
    case.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-sslvpndma-dos-HRrqB9Yx

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software SSL/TLS Session Denial of Service Vulnerability

Priority:        High

Advisory ID:     cisco-sa-asa-ftd-tcp-dos-N3DMnU4T

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvu46685

CVE-2020-3572    

CWE-400

Summary

  o A vulnerability in the SSL/TLS session handler of Cisco Adaptive Security
    Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software
    could allow an unauthenticated, remote attacker to cause a denial of
    service (DoS) condition on an affected device.

    The vulnerability is due to a memory leak when closing SSL/TLS connections
    in a specific state. An attacker could exploit this vulnerability by
    establishing several SSL/TLS sessions and ensuring they are closed under
    certain conditions. A successful exploit could allow the attacker to
    exhaust memory resources in the affected device, which would prevent it
    from processing new SSL/TLS connections, resulting in a DoS. Manual
    intervention is required to recover an affected device.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asa-ftd-tcp-dos-N3DMnU4T

    This advisory is part of the October 2020 Cisco ASA, FMC, and FTD Software
    Security Advisory Bundled Publication, which includes 17 Cisco Security
    Advisories that describe 17 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: October 2020 Cisco
    ASA, FMC, and FTD Software Security Advisory Bundled Publication .

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco devices if they are running a vulnerable
    release of Cisco ASA Software or Cisco FTD Software and have a feature
    enabled that causes the device to process SSL/TLS messages. These features
    include, but are not limited to, the following:

       AnyConnect SSL VPN
       Clientless SSL VPN
       HTTP server used for the management interface

    For information about which Cisco software releases are vulnerable, see the
    Fixed Software section of this advisory.

    Determine Whether a Device Could Process SSL or TLS Messages

    To verify whether a device that is running Cisco ASA Software or Cisco FTD
    Software could process SSL or TLS packets, use the show asp table socket |
    include SSL|DTLS command and verify that it returns output. When this
    command returns any output, the device is vulnerable. When this command
    returns empty output, the device is not affected by the vulnerability
    described in this advisory. The following example shows the output of the
    show asp table socket | include SSL|DTLS command from a device that is
    vulnerable:

        device# show asp table socket | include SSL|DTLS
        SSL       0005aa68  LISTEN     x.x.x.x:443      0.0.0.0:*
        SSL       002d9e38  LISTEN     x.x.x.x:8443     0.0.0.0:*
        DTLS      0018f7a8  LISTEN     10.0.0.250:443   0.0.0.0:*

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
    /en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    Cisco ASA Software

    In the following table(s), the left column lists Cisco software releases.
    The center column indicates whether a release is affected by the
    vulnerability described in this advisory and the first release that
    includes the fix for this vulnerability. The right column indicates whether
    a release is affected by any of the vulnerabilities described in this
    bundle and which release includes fixes for those vulnerabilities.

    Cisco ASA    First Fixed Release  First Fixed Release for All the
    Software     for This             Vulnerabilities Described in the Bundle
    Release      Vulnerability        of Advisories
    Earlier than Migrate to a fixed   Migrate to a fixed release.
    9.6 ^1       release.
    9.6 ^1       9.6.4.45             9.6.4.45
    9.7 ^1       Migrate to a fixed   Migrate to a fixed release.
                 release.
    9.8          9.8.4.26             9.8.4.29
    9.9          9.9.2.80             9.9.2.80
    9.10         9.10.1.44            9.10.1.44
    9.12         9.12.4.4             9.12.4.4
    9.13         9.13.1.13            9.13.1.13
    9.14         9.14.1.1             9.14.1.30

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco FTD    First Fixed Release  First Fixed Release for All the
    Software     for This             Vulnerabilities Described in the Bundle
    Release      Vulnerability        of Advisories
    Earlier than Migrate to a fixed   Migrate to a fixed release.
    6.2.2 ^1     release.
    6.2.2        Migrate to a fixed   Migrate to a fixed release.
                 release.
    6.2.3        Migrate to a fixed   Migrate to a fixed release.
                 release.
    6.3.0        6.3.0.6 (future      Migrate to a fixed release.
                 release)
    6.4.0        6.4.0.10             Migrate to a fixed release.
    6.5.0        6.5.0.5 (future      Migrate to a fixed release.
                 release)
    6.6.0        6.6.1                6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found by Azita Parsamanesh of Cisco during internal
    security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asa-ftd-tcp-dos-N3DMnU4T

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software Web Services Denial of Service Vulnerability

Priority:        High

Advisory ID:     cisco-sa-asaftd-webdos-fBzM5Ynw

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvs10748CSCvt70322

CVE-2020-3304    

CWE-400

CVSS Score:
8.6  AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X

Summary

  o A vulnerability in the web interface of Cisco Adaptive Security Appliance
    (ASA) Software and Firepower Threat Defense (FTD) Software could allow an
    unauthenticated, remote attacker to cause an affected device to reload
    unexpectedly, resulting in a denial of service (DoS) condition.

    The vulnerability is due to a lack of proper input validation of HTTP
    requests. An attacker could exploit this vulnerability by sending a crafted
    HTTP request to an affected device. An exploit could allow the attacker to
    cause a DoS condition.

    Note: This vulnerability applies to IP Version 4 (IPv4) and IP Version 6
    (IPv6) HTTP traffic.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-webdos-fBzM5Ynw

    This advisory is part of the October 2020 Cisco ASA, FMC, and FTD Software
    Security Advisory Bundled Publication, which includes 17 Cisco Security
    Advisories that describe 17 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: October 2020 Cisco
    ASA, FMC, and FTD Software Security Advisory Bundled Publication .

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco products if they are running a vulnerable
    release of Cisco ASA Software or FTD Software with a vulnerable HTTP
    configuration.

    For information about which Cisco software releases are vulnerable, see the
    Fixed Software section of this advisory.

    Cisco ASA Software

    In the following table, the left column lists the vulnerable Cisco ASA
    Software feature(s). The right column indicates the basic configuration
    from the show running-config CLI command. If the device is running a
    vulnerable software release and is configured for a vulnerable feature, it
    is affected by this vulnerability.

    Cisco ASA Software Feature     Vulnerable Configuration
    Adaptive Security Device       http server enable <port>
    Manager (ASDM) ^1              http <remote_ip_address>
                                   <remote_subnet_mask> <interface_name>
                                   http server enable <port>
    Cisco Security Manager ^1      http <remote_ip_address>
                                   <remote_subnet_mask> <interface_name>
    REST API ^2                    rest-api image disk0:/<image name>
                                   rest-api agent

    1. ASDM and Cisco Security Manager are vulnerable from an IP address in the
    configured http command range only.
    2. The REST API is first supported in Cisco ASA Software Release 9.3.2.
   
    Cisco FTD Software

    In the following table, the left column lists the vulnerable Cisco FTD
    Software feature(s). The right column indicates the basic configuration
    from the show running-config CLI command. If the device is running a
    vulnerable software release and is configured for a vulnerable feature, it
    is affected by this vulnerability.

    Cisco FTD Software     Vulnerable Configuration
    Feature
    HTTP Service enabled ^ http server enable <port #>
    1                      http <remote_ip_address> <remote_subnet_mask>
                           <interface_name>

    1. The HTTP feature is enabled through Firepower Threat Defense Platform
    Settings > HTTP in Cisco Firepower Management Center (FMC).

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
    /en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    In the following table(s), the left column lists Cisco software releases.
    The center column indicates whether a release is affected by the
    vulnerability described in this advisory and the first release that
    includes the fix for this vulnerability. The right column indicates whether
    a release is affected by any of the vulnerabilities described in this
    bundle and which release includes fixes for those vulnerabilities.

    Cisco ASA Software

    Cisco ASA     First Fixed Release  First Fixed Release for All
    Software      for This             Vulnerabilities Described in the Bundle
    Release       Vulnerability        of Advisories
    Earlier than  Migrate to a fixed   Migrate to a fixed release.
    9.6 ^1        release.
    9.6 ^1        9.6.4.45             9.6.4.45
    9.7 ^1        Migrate to a fixed   Migrate to a fixed release.
                  release.
    9.8           9.8.4.22             9.8.4.29
    9.9           9.9.2.80             9.9.2.80
    9.10          9.10.1.44            9.10.1.44
    9.12          9.12.3.12            9.12.4.4
    9.13          9.13.1.12            9.13.1.13
    9.14          9.14.1.10            9.14.1.30

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco FTD     First Fixed Release  First Fixed Release for All
    Software      for This             Vulnerabilities Described in the Bundle
    Release       Vulnerability        of Advisories
    Earlier than  Migrate to a fixed   Migrate to a fixed release.
    6.2.2 ^1      release.
    6.2.2         Migrate to a fixed   Migrate to a fixed release.
                  release.
    6.2.3         Migrate to a fixed   Migrate to a fixed release.
                  release.
    6.3.0         6.3.0.6 (future      Migrate to a fixed release.
                  release)
    6.4.0         6.4.0.10             Migrate to a fixed release.
    6.5.0         6.5.0.5 (future      Migrate to a fixed release.
                  release)
    6.6.0         6.6.1                6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during the resolution of a Cisco TAC support
    case.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-webdos-fBzM5Ynw

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software Web Services File Upload Denial of Service Vulnerability

Priority:        High

Advisory ID:     cisco-sa-asaftd-fileup-dos-zvC7wtys

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvt60190

CVE-2020-3436    

CWE-434

CVSS Score:
8.6  AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X

Summary

  o A vulnerability in the web services interface of Cisco Adaptive Security
    Appliance (ASA) and Cisco Firepower Threat Defense (FTD) Software could
    allow an unauthenticated, remote attacker to upload arbitrary-sized files
    to specific folders on an affected device, which could lead to an
    unexpected device reload.

    The vulnerability exists because the affected software does not efficiently
    handle the writing of large files to specific folders on the local file
    system. An attacker could exploit this vulnerability by uploading files to
    those specific folders. A successful exploit could allow the attacker to
    write a file that triggers a watchdog timeout, which would cause the device
    to unexpectedly reload, causing a denial of service (DoS) condition.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-fileup-dos-zvC7wtys

    This advisory is part of the October 2020 Cisco ASA, FMC, and FTD Software
    Security Advisory Bundled Publication, which includes 17 Cisco Security
    Advisories that describe 17 vulnerabilities. For a complete list of the
    advisories and links to them, see Cisco Event Response: October 2020 Cisco
    ASA, FMC, and FTD Software Security Advisory Bundled Publication .

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco products if they are running a vulnerable
    release of Cisco ASA Software or Cisco FTD Software with a vulnerable
    AnyConnect or WebVPN configuration.

    For information about which Cisco software releases are vulnerable, see the
    Fixed Software section of this advisory.

    ASA Software

    In the following table, the left column lists the Cisco ASA features that
    are vulnerable. The right column indicates the basic configuration for the
    feature from the show running-config CLI command. If the device is
    configured for one of these features, it is vulnerable.

    Cisco ASA                       Vulnerable Configuration
     Feature
    AnyConnect
    IKEv2
    Remote     crypto ikev2 enable <interface_name> client-services port <port #>
    Access
    (with
    client
    services)
    AnyConnect webvpn
    SSL VPN       enable <interface_name>

    Clientless webvpn
    SSL VPN       enable <interface_name>

    FTD Software

    In the following table, the left column lists the Cisco FTD features that
    are vulnerable. The right column indicates the basic configuration for the
    feature from the show running-config CLI command. If the device is
    configured for one of these features, it is vulnerable.

    On devices running Cisco FTD Software, the show running-config command is
    available from Diagnostic CLI mode only. To enter Diagnostic CLI mode, use
    the system support diagnostic-cli command in the regular Firepower Threat
    Defense CLI.

    Cisco FTD                       Vulnerable Configuration
     Feature
    AnyConnect
    IKEv2
    Remote
    Access     crypto ikev2 enable <interface_name> client-services port <port #>
    (with
    client
    services)
    ^1,2
    AnyConnect webvpn
    SSL VPN ^    enable <interface_name>
    1,2

    1. Remote Access VPN features are enabled through Devices > VPN > Remote
    Access in the Cisco Firepower Management Center (FMC) or through Device >
    Remote Access VPN in Cisco Firepower Device Manager (FDM).
    2. Remote Access VPN features were first supported as of Cisco FTD Software
    Release 6.2.2.

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license: https://www.cisco.com/c/en/us/products/
    end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories and Alerts page , to determine exposure and a
    complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
    /en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    In the following table(s), the left column lists Cisco software releases.
    The center column indicates whether a release is affected by the
    vulnerability described in this advisory and the first release that
    includes the fix for this vulnerability. The right column indicates whether
    a release is affected by any of the vulnerabilities described in this
    bundle and which release includes fixes for those vulnerabilities.

    Cisco ASA Software

    Cisco ASA     First Fixed Release  First Fixed Release for All
    Software      for This             Vulnerabilities Described in the Bundle
    Release       Vulnerability        of Advisories
    Earlier than  Migrate to a fixed   Migrate to a fixed release.
    9.6 ^1        release.
    9.6 ^1        9.6.4.45             9.6.4.45
    9.7 ^1        Migrate to a fixed   Migrate to a fixed release.
                  release.
    9.8           9.8.4.25             9.8.4.29
    9.9           9.9.2.80             9.9.2.80
    9.10          9.10.1.44            9.10.1.44
    9.12          9.12.4.2             9.12.4.4
    9.13          9.13.1.12            9.13.1.13
    9.14          9.14.1.15            9.14.1.30

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco FTD     First Fixed Release  First Fixed Release for All
    Software      for This             Vulnerabilities Described in the Bundle
    Release       Vulnerability        of Advisories
    Earlier than  Migrate to a fixed   Migrate to a fixed release.
    6.2.2 ^1      release.
    6.2.2         Migrate to a fixed   Migrate to a fixed release.
                  release.
    6.2.3         Migrate to a fixed   Migrate to a fixed release.
                  release.
    6.3.0         6.3.0.6 (future      Migrate to a fixed release.
                  release)
    6.4.0         6.4.0.10             Migrate to a fixed release.
    6.5.0         6.5.0.5 (future      Migrate to a fixed release.
                  release)
    6.6.0         6.6.1                6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found by Ilkin Gasimov of Cisco during internal
    security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-fileup-dos-zvC7wtys

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software Web Services Interface Cross-Site Scripting Vulnerabilities

Priority:        Medium
Advisory ID:     cisco-sa-asaftd-xss-multiple-FCB3vPZe
First Published: 2020 October 21 16:00 GMT
Last Updated:    2021 June 28 15:14 GMT
Version 3.1:     Final
Workarounds:     No workarounds available
Cisco Bug IDs:   CSCvu44910 CSCvu75581 CSCvu83309 CSCvv13835 CSCvw53796
CVE Names:       CVE-2020-3580 CVE-2020-3581 CVE-2020-3582 CVE-2020-3583
CWEs:            CWE-79

Summary

  o Update June 28, 2021 : Cisco has become aware that public exploit code
    exists for CVE-2020-3580, and this vulnerability is being actively
    exploited.

    
   
    Multiple vulnerabilities in the web services interface of Cisco Adaptive
    Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD)
    Software could allow an unauthenticated, remote attacker to conduct
    cross-site scripting (XSS) attacks against a user of the web services
    interface of an affected device.

    The vulnerabilities are due to insufficient validation of user-supplied
    input by the web services interface of an affected device. An attacker
    could exploit these vulnerabilities by persuading a user of the interface
    to click a crafted link. A successful exploit could allow the attacker to
    execute arbitrary script code in the context of the interface or allow the
    attacker to access sensitive, browser-based information.

    Note: These vulnerabilities affect only specific AnyConnect and WebVPN
    configurations. For more information, see the Vulnerable Products section.

    Cisco has released software updates that address these vulnerabilities.
    There are no workarounds that address these vulnerabilities.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-xss-multiple-FCB3vPZe

Affected Products

  o Vulnerable Products

    At the time of publication, these vulnerabilities affected Cisco products
    if they were running a vulnerable release of Cisco ASA Software or FTD
    Software with a vulnerable AnyConnect or WebVPN configuration.

    For information about which Cisco software releases were vulnerable at the
    time of publication, see the Fixed Software section of this advisory. See
    the Details section in the bug ID(s) at the top of this advisory for the
    most complete and current information.

    Cisco ASA Software

    In the following table, the left column lists the Cisco ASA Software
    features that were vulnerable at the time of publication. The right column
    indicates the basic configuration for each feature from the show
    running-config CLI command. If a device is running a vulnerable release and
    is configured for one of these features, it is affected by these
    vulnerabilities.

    Cisco ASA  Vulnerable Configuration
    Software
    Feature
    AnyConnect
    Internet
    Key
    Exchange
    Version 2  crypto ikev2 enable <interface_name> client-services port <port #>
    (IKEv2)
    Remote
    Access
    (with
    client
    services)
    AnyConnect webvpn
    SSL VPN     enable <interface_name>

    Clientless webvpn
    SSL VPN     enable <interface_name>

    Cisco FTD Software

    In the following table, the left column lists the Cisco FTD Software
    features that were vulnerable at the time of publication. The right column
    indicates the basic configuration for each feature from the show
    running-config CLI command. If a device is running a vulnerable release and
    is configured for one of these features, it is affected by these
    vulnerabilities.

    Cisco FTD  Vulnerable Configuration
    Software
    Feature
    AnyConnect
    Internet
    Key
    Exchange
    Version 2
    (IKEv2)    crypto ikev2 enable <interface_name> client-services port <port #>
    Remote
    Access
    (with
    client
    services)
    ^1,2
    AnyConnect webvpn
    SSL VPN ^   enable <interface_name>
    1,2

    1. Remote Access VPN features are first supported in Cisco FTD Software
    Release 6.2.2.
    2. Remote Access VPN features are enabled by using Devices > VPN > Remote
    Access in Cisco Firepower Management Center (FMC) or by using Device >
    Remote Access VPN in Cisco Firepower Device Manager (FDM).

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by these vulnerabilities.

    Cisco has confirmed that these vulnerabilities do not affect Cisco
    Firepower Management Center (FMC) Software.

Workarounds

  o There are no workarounds that address these vulnerabilities.

Fixed Software

  o When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Fixed Releases

    At the time of publication, the release information in the following table
    (s) was accurate. See the Details section in the bug ID(s) at the top of
    this advisory for the most complete and current information.

    The left column lists Cisco software releases, and the right column
    indicates whether a release was affected by the vulnerabilities described
    in this advisory and which release included the fix for these
    vulnerabilities.

    Note: It was found that the fix for CVE-2020-3581 was incomplete and is now
    fixed and tracked by CSCvw53796 . The First Fixed Release for These
    Vulnerabilities column has been updated to account for the complete fix.

    Cisco ASA Software

    Cisco ASA Software Release  First Fixed Release for These Vulnerabilities
    Earlier than 9.6 ^1         Migrate to a fixed release.
    9.6 ^1                      Migrate to a fixed release.
    9.7 ^1                      Migrate to a fixed release.
    9.8                         9.8.4.34
    9.9                         9.9.2.85
    9.10 ^1                     Migrate to a fixed release.
    9.12                        9.12.4.13
    9.13                        9.13.1.21
    9.14                        9.14.2.8
    9.15                        9.15.1.15

    1. Cisco ASA Software releases 9.7 and earlier, as well as Release 9.10,
    have reached end of software maintenance . Customers are advised to migrate
    to a supported release that includes the fix for these vulnerabilities.

    Cisco FTD Software

    Cisco FTD Software Release  First Fixed Release for These Vulnerabilities
    Earlier than 6.2.2 ^1       Migrate to a fixed release.
    6.2.2                       Migrate to a fixed release.
    6.2.3                       Migrate to a fixed release.
    6.3.0                       Migrate to a fixed release.
    6.4.0                       6.4.0.12 (May 2021)
    6.5.0                       Migrate to a fixed release.
    6.6.0                       6.6.4 ^2
    6.7.0                       6.7.0.2

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance .
    Customers are advised to migrate to a supported release that includes the
    fix for these vulnerabilities.

    2. The First Fixed Release for the 6.6.0 code train was 6.6.3; however, due
    to upgrade issues associated with CSCvx86231 the recommended release is
    6.6.4.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is aware that
    public exploit code exists for CVE-2020-3580, and this vulnerability is
    being actively exploited.

Source

  o Cisco would like to thank the following security researchers:

       Abdulrahman Nour and Ahmed Aboul-Ela of RedForce, Mikhail Klyuchnikov
        and Nikita Abramov of Positive Technologies, and Phil Purviance for
        independently reporting CVE-2020-3580
       Maxim Suslov and Phil Purviance for independently reporting
        CVE-2020-3581
       Phil Purviance for reporting CVE-2020-3582
       Maxim Suslov and Phil Purviance for independently reporting
        CVE-2020-3583

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

Related to This Advisory

  o Cross-Site Scripting

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-xss-multiple-FCB3vPZe

Revision History

  o +---------+------------------------+---------------+--------+-------------+
    | Version |      Description       |    Section    | Status |    Date     |
    +---------+------------------------+---------------+--------+-------------+
    |         | Indicated that public  | Summary,      |        |             |
    |         | exploit code is        | Exploitation  |        |             |
    | 3.1     | available and active   | and Public    | Final  | 2021-JUN-28 |
    |         | exploitation is        | Announcements |        |             |
    |         | occurring.             |               |        |             |
    +---------+------------------------+---------------+--------+-------------+
    |         | Updated the fixed      |               |        |             |
    |         | release information    | Summary,      |        |             |
    |         | for CVE-2020-3581,     | Fixed         |        |             |
    | 3.0     | which is tracked by    | Software,     | Final  | 2021-APR-28 |
    |         | Cisco Bug ID           | Exploitation  |        |             |
    |         | CSCvw53796. These CVEs | and Public    |        |             |
    |         | have previously been   | Announcements |        |             |
    |         | disclosed.             |               |        |             |
    +---------+------------------------+---------------+--------+-------------+
    |         | Updated the Summary    |               |        |             |
    |         | section to provide     |               |        |             |
    |         | information on a new   |               |        |             |
    |         | vulnerability          |               |        |             |
    | 2.0     | affecting fixed        | Summary       | Final  | 2020-OCT-22 |
    |         | release                |               |        |             |
    |         | recommendations for    |               |        |             |
    |         | code trains 9.13 and   |               |        |             |
    |         | 9.14.                  |               |        |             |
    +---------+------------------------+---------------+--------+-------------+
    |         | Added a security       |               |        |             |
    | 1.1     | researcher for         | Source        | Final  | 2020-OCT-22 |
    |         | CVE-2020-3580.         |               |        |             |
    +---------+------------------------+---------------+--------+-------------+
    | 1.0     | Initial public         | -             | Final  | 2020-OCT-21 |
    |         | release.               |               |        |             |
    +---------+------------------------+---------------+--------+-------------+


- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software WebVPN CRLF Injection Vulnerability

Priority:        Medium

Advisory ID:     cisco-sa-asa-ftd-crlf-inj-BX9uRwSn

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvt18028

CVE-2020-3561    

CWE-93

CVSS Score:
4.7  AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N/E:X/RL:X/RC:X

Summary

  o A vulnerability in the Clientless SSL VPN (WebVPN) of Cisco Adaptive
    Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD)
    Software could allow an unauthenticated, remote attacker to inject
    arbitrary HTTP headers in the responses of the affected system.

    The vulnerability is due to improper input sanitization. An attacker could
    exploit this vulnerability by persuading a user of the interface to click a
    crafted link. A successful exploit could allow the attacker to conduct a
    CRLF injection attack, adding arbitrary HTTP headers in the responses of
    the system and redirecting the user to arbitrary websites.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asa-ftd-crlf-inj-BX9uRwSn

Affected Products

  o Vulnerable Products

    At the time of publication, this vulnerability affected Cisco products
    running Cisco ASA Software or FTD Software when configured for AnyConnect/
    WebVPN and the Load Balancing service was enabled.

    For information about which Cisco ASA Software and FTD Software releases
    were vulnerable, see the Fixed Software section of this advisory. See the
    Details section in the bug ID(s) at the top of this advisory for the most
    complete and current information.

    Determine If WebVPN Is Enabled

    To determine if the WebVPN service is enabled on a device, use the show
    running-config webvpn privileged EXEC command and refer to the output of
    the command. The following example shows the output of the command for a
    device that has the WebVPN service enabled:

        ciscoasa# show running-config webvpn
        .
        .
        .
        webvpn
        enable interface_name
        .
        .
        .

    To view AnyConnect-related configuration, use the show webvpn anyconnect 
    command.

    Determine If Load Balancing Is Enabled

    To determine if the Load Balancing service is enabled on a device, see
    Viewing VPN Load Balancing Information .

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Fixed Releases

    At the time of publication, the release information in the following table
    (s) was accurate. See the Details section in the bug ID(s) at the top of
    this advisory for the most complete and current information.

    The left column lists Cisco software releases, and the right column
    indicates whether a release was affected by the vulnerability described in
    this advisory and which release included the fix for this vulnerability.

    Cisco ASA Software

    Cisco    First Fixed
    ASA      Release for
    Software This
    Release  Vulnerability
    Earlier  Migrate to a
    than 9.6 fixed
    ^1       release.
    9.6 ^1   9.6.4.35
    9.7 ^1   9.8.4.20
    9.8      9.8.4.20
    9.9      9.9.2.80
    9.10     9.10.1.43
    9.12     9.12.3.9
    9.13     9.13.1.10
    9.14     9.14.1.10

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco    First Fixed
    FTD      Release for
    Software This
    Release  Vulnerability
    Earlier  Migrate to a
    than     fixed
    6.3.0 ^1 release.
             6.3.0.6
    6.3.0    (future
             release)
    6.4.0    6.4.0.10
             6.5.0.5
    6.5.0    (future
             release)
    6.6.0    6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during the resolution of a Cisco TAC support
    case.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asa-ftd-crlf-inj-BX9uRwSn

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------

Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software WebVPN Portal Access Rule Bypass Vulnerability

Priority:        Medium

Advisory ID:     cisco-sa-asaftd-rule-bypass-P73ABNWQ

First Published: 2020 October 21 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvu75615

CVE-2020-3578    

CWE-863

Summary

  o A vulnerability in the web services interface of Cisco Adaptive Security
    Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software
    could allow an unauthenticated, remote attacker to bypass a configured
    access rule and access parts of the WebVPN portal that are supposed to be
    blocked.

    The vulnerability is due to insufficient validation of URLs when portal
    access rules are configured. An attacker could exploit this vulnerability
    by accessing certain URLs on the affected device.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-rule-bypass-P73ABNWQ

Affected Products

  o Vulnerable Products

    At the time of publication, this vulnerability affected Cisco products if
    they were running a vulnerable release of Cisco ASA Software or FTD
    Software with a vulnerable AnyConnect or WebVPN configuration and had a
    portal access rule configured.

    For information about which Cisco software releases were vulnerable, see
    the Fixed Software section of this advisory. See the Details section in the
    bug ID(s) at the top of this advisory for the most complete and current
    information.

    Determine Whether a Portal Access Rule Is Configured

    To verify whether a portal access rule is configured, use the show
    running-config webvpn | include portal-access-rule command. If that command
    returns output, the device is vulnerable. Empty output indicates that the
    device is not vulnerable.

    Determine Whether a Vulnerable AnyConnect or WebVPN Configuration Is
    Present

    Cisco ASA Software

    In the following table, the left column lists the Cisco ASA Software
    features that are vulnerable. The right column indicates the basic
    configuration for the feature from the show running-config CLI command. If
    the device is running a vulnerable release and is configured for one of
    these features, it is vulnerable.

    Cisco ASA  Vulnerable Configuration
    Software
    Feature
    AnyConnect
    IKEv2
    Remote     crypto ikev2 enable <interface_name> client-services port <port #>
    Access
    (with
    client
    services)
    AnyConnect webvpn
    SSL VPN     enable <interface_name>

               webvpn
    Clientless
    SSL VPN    webvpn
                enable <interface_name>

    Cisco FTD Software

    In the following table, the left column lists the Cisco FTD Software
    features that are vulnerable. The right column indicates the basic
    configuration for the feature from the show running-config CLI command. If
    the device is running a vulnerable release and is configured for one of
    these features, it is vulnerable.

    Cisco FTD  Vulnerable Configuration
    Software
    Feature
    AnyConnect
    IKEv2
    Remote
    Access     crypto ikev2 enable <interface_name> client-services port <port #>
    (with
    client
    services)
    ^1,2
    AnyConnect webvpn
    SSL VPN ^   enable <interface_name>
    1,2

    1. Remote Access VPN features are enabled by using Devices > VPN > Remote
    Access in Cisco Firepower Management Center (FMC) or by using Device >
    Remote Access VPN in Cisco Firepower Device Manager (FDM).
    2. Remote Access VPN features are first supported in Cisco FTD Software
    Release 6.2.2.

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Fixed Releases

    At the time of publication, the release information in the following table
    (s) was accurate. See the Details section in the bug ID(s) at the top of
    this advisory for the most complete and current information.

    The left column lists Cisco software releases, and the right column
    indicates whether a release was affected by the vulnerability described in
    this advisory and which release included the fix for this vulnerability.

    Cisco ASA Software

    Cisco    First Fixed
    ASA      Release for
    Software This
    Release  Vulnerability
    Earlier  Migrate to a
    than 9.6 fixed
    ^1       release.
    9.6 ^1   9.6.4.45
             Migrate to a
    9.7 ^1   fixed
             release.
    9.8      9.8.4.26
    9.9      9.9.2.80
    9.10     9.10.1.44
    9.12     9.12.4.4
    9.13     9.13.1.13
    9.14     9.14.1.19

    1. Cisco ASA Software releases 9.7 and earlier have reached end of software
    maintenance. Customers are advised to migrate to a supported release that
    includes the fix for this vulnerability.

    Cisco FTD Software

    Cisco FTD Software Release   First Fixed Release for This Vulnerability
    Earlier than 6.2.2 ^1        Migrate to a fixed release.
    6.2.2                        Migrate to a fixed release.
    6.2.3                        Migrate to a fixed release.
    6.3.0                        6.3.0.6 (future release)
    6.4.0                        6.4.0.10
    6.5.0                        6.5.0.5 (future release)
    6.6.0                        6.6.1

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

Source

  o This vulnerability was found during the resolution of a Cisco TAC support
    case.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-asaftd-rule-bypass-P73ABNWQ

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2020-OCT-21  |
    +----------+---------------------------+----------+--------+--------------+

- --------------------------------------------------------------------------------


Cisco Adaptive Security Appliance Software and Firepower Threat Defense
Software for Firepower 1000/2100 Series Appliances Secure Boot Bypass
Vulnerabilities

Priority:        High

Advisory ID:     cisco-sa-fxos-sbbyp-KqP6NgrE

First Published: 2020 October 21 16:00 GMT

Last Updated:    2020 October 23 13:31 GMT

Version 1.1:     Final

Workarounds:     No workarounds availableCisco Bug IDs:   CSCvt31177CSCvt31178

CVE-2020-3458    

CWE-693

CVSS Score:
6.7  AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X

Summary

  o Update from October 23, 2020: Cisco has become aware of a new Cisco
    Adaptive Security Appliance vulnerability that could affect the fixed
    releases recommended for code trains 9.13 and 9.14 in the Fixed Software 
    section of this advisory. See the Cisco Adaptive Security Appliance
    Software SSL/TLS Denial of Service Vulnerability for additional
    information.

    
   
    Multiple vulnerabilities in the secure boot process of Cisco Adaptive
    Security Appliance (ASA) Software and Firepower Threat Defense (FTD)
    Software for the Firepower 1000 Series and Firepower 2100 Series Appliances
    could allow an authenticated, local attacker to bypass the secure boot
    mechanism.

    The vulnerabilities are due to insufficient protections of the secure boot
    process. An attacker could exploit these vulnerabilities by injecting code
    into specific files that are then referenced during the device boot
    process. A successful exploit could allow the attacker to break the chain
    of trust and inject code into the boot process of the device, which would
    be executed at each boot and maintain persistence across reboots.

    Cisco has released software updates that address these vulnerabilities.
    There are no workarounds that address these vulnerabilities.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-fxos-sbbyp-KqP6NgrE

Affected Products

  o Vulnerable Products

    These vulnerabilities affect Cisco ASA Software and FTD Software when
    running on the following products:

       Firepower 1000 Series Appliances
       Firepower 2100 Series Appliances

    For information about which Cisco software releases are vulnerable, see the
    Fixed Software section of this advisory.

    For the Firepower 4100 Series Appliances and Firepower 9300 Series
    Appliances running FXOS, see the following advisory:

    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-fxos-sbbp-XTuPkYTn

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by these vulnerabilities.

    Cisco has confirmed that this vulnerability does not affect Cisco Firepower
    Management Center (FMC) Software.

Workarounds

  o There are no workarounds that address these vulnerabilities.

Fixed Software

  o Cisco has released free software updates that address the vulnerabilities
    described in this advisory. Customers may only install and expect support
    for software versions and feature sets for which they have purchased a
    license. By installing, downloading, accessing, or otherwise using such
    software upgrades, customers agree to follow the terms of the Cisco
    software license:
    https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

    Additionally, customers may only download software for which they have a
    valid license, procured from Cisco directly, or through a Cisco authorized
    reseller or partner. In most cases this will be a maintenance upgrade to
    software that was previously purchased. Free security software updates do
    not entitle customers to a new software license, additional software
    feature sets, or major revision upgrades.

    When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories page , to determine exposure and a complete
    upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance
    providers.

    Customers Without Service Contracts

    Customers who purchase directly from Cisco but do not hold a Cisco service
    contract and customers who make purchases through third-party vendors but
    are unsuccessful in obtaining fixed software through their point of sale
    should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c
    /en/us/support/web/tsd-cisco-worldwide-contacts.html

    Customers should have the product serial number available and be prepared
    to provide the URL of this advisory as evidence of entitlement to a free
    upgrade.

    Fixed Releases

    In the following table(s), the left column lists Cisco software releases
    and the right column indicates whether a release is affected by the
    vulnerabilities described in this advisory and the first release that
    includes the fix for these vulnerabilities.

    ASA Software for Firepower 1000 Series and Firepower 2100 Series

    Cisco ASA Software Release First Fixed Release for these Vulnerabilities
    9.8                        9.8.4.26
    9.9                        9.9.2.80
    9.10                       9.10.1.43
    9.12                       9.12.4.3
    9.13                       9.13.1.13
    9.14                       9.14.1.15

    Note : Firepower 1000 Series Appliances were first supported in ASA
    Software Release 9.13 and Firepower 2100 Series Appliances were first
    supported in ASA Software Release 9.8.

    FTD Software for Firepower 1000 Series and Firepower 2100 Series

    Cisco FTD Software Release  First Fixed Release for these Vulnerabilities
    Earlier than 6.2.2 ^1       Migrate to a fixed release.
    6.2.2                       Migrate to a fixed release.
    6.2.3                       Migrate to a fixed release.
    6.3.0                       6.3.0.6 (future release)
    6.4.0                       6.4.0.10
    6.5.0                       6.5.0.5 (future release)
    6.6.0                       6.6.1

    Note : Firepower 1000 Series Appliances were first supported on FTD
    Software Release 6.4.0 and Firepower 2100 Series appliances were first
    supported on FTD Software Release 6.2.1.

    1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as
    releases 6.2.0 and 6.2.1, have reached end of software maintenance.
    Customers are advised to migrate to a supported release that includes the
    fix for these vulnerabilities.

    To upgrade to a fixed release of Cisco FTD Software, do one of the
    following:

       For devices that are managed by using Cisco Firepower Management Center
        (FMC), use the FMC interface to install the upgrade. After installation
        is complete, reapply the access control policy.
       For devices that are managed by using Cisco Firepower Device Manager
        (FDM), use the FDM interface to install the upgrade. After installation
        is complete, reapply the access control policy.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerabilities that are
    described in this advisory.

Source

  o These vulnerabilities were found during internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-fxos-sbbyp-KqP6NgrE

Revision History

  o +---------+------------------------------+---------+--------+-------------+
    | Version |         Description          | Section | Status |    Date     |
    +---------+------------------------------+---------+--------+-------------+
    |         | Updated the Summary section  |         |        |             |
    |         | to provide information on a  |         |        |             |
    | 1.1     | new vulnerability affecting  | Summary | Final  | 2020-OCT-23 |
    |         | fixed release                |         |        |             |
    |         | recommendations for code     |         |        |             |
    |         | trains 9.13 and 9.14.        |         |        |             |
    +---------+------------------------------+---------+--------+-------------+
    | 1.0     | Initial public release.      | -       | Final  | 2020-OCT-21 |
    +---------+------------------------------+---------+--------+-------------+

- --------------------------END INCLUDED TEXT--------------------

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