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AUSCERT External Security Bulletin Redistribution
ESB-2019.1516
Cisco Firepower Threat Defense Software
2 May 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Firepower Threat Defense Software
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Root Compromise -- Existing Account
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-1699 CVE-2019-1709 CVE-2019-1703
CVE-2019-1696 CVE-2019-1704 CVE-2018-15462
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-ftd-cmd-inject
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-cmd-inj
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-dos
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-smb-snort
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-firepower-dos
Comment: This bulletin contains five (5) security advisories.
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Cisco Firepower Threat Defense Software Command Injection Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20190501-ftd-cmd-inject
First Published: 2019 May 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvm14217CSCvn33026
CVE-2019-1699
CWE-78
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 A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software
could allow an authenticated, local attacker to perform a command injection
attack.
The vulnerability is due to insufficient input validation. An attacker
could exploit this vulnerability by injecting commands into arguments for a
specific command. A successful exploit could allow the attacker to execute
commands with root privileges.
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-20190501-ftd-cmd-inject
Affected Products
o Vulnerable Products
This vulnerability affects Cisco products that are running a vulnerable
release of Cisco FTD Software. For information about which Cisco FTD
Software releases are vulnerable, see the Fixed Software section of this
advisory.
Determining the Cisco FTD Software Release
To determine which Cisco FTD Software release is running on a device,
administrators can log in to the device, use the show version command in
the CLI, and refer to the output of the command. The following example
shows the output of the command for a device that is running Cisco FTD
Software Release 6.2.0:
> show version
---------------------[ ftd ]---------------------
Model : Cisco ASA5525-X Threat Defense (75) Version 6.2.0 (Build 362)
UUID : 2849ba3c-ecb8-11e6-98ca-b9fc2975893c
Rules update version : 2017-03-15-001-vrt
VDB version : 279
----------------------------------------------------
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 Adaptive
Security Appliance (ASA) Software.
Workarounds
o There are no workarounds that address this vulnerability.
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 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
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. In the following table(s), the left
column lists Cisco software releases. The right column indicates whether a
release is affected by the vulnerability described in this advisory and the
release that includes the fix for this vulnerability.
Cisco FTD Software
Cisco FTD Software Release Recommended Release for This Vulnerability
6.0 6.2.3.12
6.0.1 6.2.3.12
6.1.0 6.2.3.12
6.2.0 6.2.3.12
6.2.1 6.2.3.12
6.2.2 6.2.3.12
6.2.3 6.2.3.12
6.3.0 Not vulnerable
6.4.0 Not vulnerable
To upgrade to a fixed release of Cisco FTD Software, customers can 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 Cisco would like to thank Lubomir Vesely of Tower Street for reporting this
vulnerability.
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-20190501-ftd-cmd-inject
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2019-May-01 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco Firepower Threat Defense Software Command Injection Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20190501-frpwr-cmd-inj
First Published: 2019 May 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvm14267
CVE-2019-1709
CWE-78
CVSS Score:
6.0 AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software
could allow an authenticated, local attacker to perform a command injection
attack.
The vulnerability is due to insufficient input validation. An attacker
could exploit this vulnerability by injecting commands into arguments for a
specific command. A successful exploit could allow the attacker to execute
commands with root privileges.
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-20190501-frpwr-cmd-inj
Affected Products
o Vulnerable Products
This vulnerability affects Cisco products that are running a vulnerable
release of Cisco FTD Software. For information about which Cisco FTD
Software releases are vulnerable, see the Fixed Software section of this
advisory.
Determining the Cisco FTD Software Release
To determine which Cisco FTD Software release is running on a device,
administrators can log in to the device, use the show version command in
the CLI, and refer to the output of the command. The following example
shows the output of the command for a device that is running Cisco FTD
Software Release 6.2.0:
> show version
---------------------[ ftd ]---------------------
Model : Cisco ASA5525-X Threat Defense (75) Version 6.2.0 (Build 362)
UUID : 2849ba3c-ecb8-11e6-98ca-b9fc2975893c
Rules update version : 2017-03-15-001-vrt
VDB version : 279
----------------------------------------------------
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 Adaptive
Security Appliance (ASA) Software.
Workarounds
o There are no workarounds that address this vulnerability.
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 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
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. In the following table(s), the left
column lists Cisco software releases. The right column indicates whether a
release is affected by the vulnerability described in this advisory and the
release that includes the fix for this vulnerability.
Cisco FTD Software
Cisco FTD Software Release Recommended Release for This Vulnerability
6.0 6.2.3.12
6.0.1 6.2.3.12
6.1.0 6.2.3.12
6.2.0 6.2.3.12
6.2.1 6.2.3.12
6.2.2 6.2.3.12
6.2.3 6.2.3.12
6.3.0 Not vulnerable
6.4.0 Not vulnerable
To upgrade to a fixed release of Cisco FTD Software, customers can 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-20190501-frpwr-cmd-inj
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2019-May-01 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco Firepower Threat Defense Software Packet Processing Denial of Service
Vulnerability
Priority: High
Advisory ID: cisco-sa-20190501-frpwr-dos
First Published: 2019 May 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvj62504
CVE-2019-1703
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 internal packet-processing functionality of Cisco
Firepower Threat Defense (FTD) Software for the Cisco Firepower 2100 Series
could allow an unauthenticated, remote attacker to cause an affected device
to stop processing traffic, resulting in a denial of service (DoS)
condition.
The vulnerability is due to a logic error, which may prevent ingress
buffers from being replenished under specific traffic conditions. An
attacker could exploit this vulnerability by sending a series of crafted
packets to an affected device. A successful exploit could allow the
attacker to consume all input buffers, which are shared between all
interfaces, leading to a queue wedge condition in all active interfaces.
This situation would cause an affected device to stop processing any
incoming traffic and result in a DoS condition until the device is reloaded
manually.
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-20190501-frpwr-dos
Affected Products
o Vulnerable Products
This vulnerability affects Cisco Firepower 2100 Series devices that are
running a vulnerable release of Cisco FTD Software.
For information about which Cisco FTD Software releases are vulnerable, see
the Fixed Software section of this advisory.
Determining the Cisco FTD Software Release
To determine which Cisco FTD Software release is running on a device,
administrators can log in to the device and use the show version command in
the CLI. The following example shows the output of the command for a device
that is running Cisco FTD Software Release 6.2.2:
> show version
------------------[ ftd ]-----------------------
Model : Cisco Firepower 2130 Threat Defense (77) Version 6.2.2 (Build 81)
UUID : 0cd3595a-7efa-11e7-aaa1-ee3989c8bf25
Rules update version : 2017-12-20-001-vrt
VDB version : 290
----------------------------------------------------
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 the following
Cisco products:
Adaptive Security Appliance (ASA) 5500-X Series with FirePOWER Services
ASA Software
Firepower Management Center
Firepower 4100 Series
FirePOWER 7000 Series Appliances
FirePOWER 8000 Series Appliances
Firepower 9300 Security Appliances
FirePOWER Threat Defense for Integrated Services Routers (ISRs)
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
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. To ensure a complete upgrade
solution, customers should consider that this advisory is part of a
collection that includes the following advisories:
cisco-sa-20190501-asa-csrf : Cisco Adaptive Security Appliance Software
Cross-Site Request Forgery Vulnerability
cisco-sa-20190501-asa-frpwrtd-dos : Cisco Adaptive Security Appliance
Software and Cisco Firepower Threat Defense Software TCP Timer Handling
Denial of Service Vulnerability
cisco-sa-20190501-asa-ftd-dos : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software WebVPN Denial of Service
Vulnerability
cisco-sa-20190501-asa-ftd-entropy : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software Low-Entropy Keys
Vulnerability
cisco-sa-20190501-asa-ftd-ike-dos : Cisco Adaptive Security Appliance
Software and Cisco Firepower Threat Defense Software MOBIKE Denial of
Service Vulnerability
cisco-sa-20190501-asaftd-saml-vpn : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software VPN SAML Authentication
Bypass Vulnerability
cisco-sa-20190501-asa-ipsec-dos : Cisco Adaptive Security Appliance
Software IPsec Denial of Service Vulnerability
cisco-sa-20190501-firepower-dos : Cisco Firepower Threat Defense
Software TCP Ingress Handler Denial of Service Vulnerability
cisco-sa-20190501-frpwr-dos: Cisco Firepower Threat Defense Software
Packet Processing Denial of Service Vulnerability
cisco-sa-20190501-frpwr-smb-snort : Cisco Firepower Threat Defense
Software SMB Protocol Preprocessor Detection Engine Denial of Service
Vulnerabilities
cisco-sa-20190501-sd-cpu-dos : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software WebVPN Denial of Service
Vulnerability
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 release that includes the
fix for this vulnerability. The right column indicates whether a release is
affected by all the vulnerabilities described in this collection of
advisories and which release includes fixes for those vulnerabilities.
Cisco FTD Software
Cisco FTD Recommended Release Recommended Release for All
Software for This Vulnerabilities Described in the
Release Vulnerability Collection of Advisories
6.0 Not applicable ^1 6.2.3.12
6.0.1 Not applicable ^1 6.2.3.12
6.1.0 Not applicable ^1 6.2.3.12
6.2.0 Not applicable ^1 6.2.3.12
6.2.1 6.2.3.12 6.2.3.12
6.2.2 6.2.3.12 6.2.3.12
6.2.3 6.2.3.12 6.2.3.12
6.3.0 Not vulnerable 6.3.0.3 (target week of 6 May 2019)
6.4.0 Not vulnerable Not vulnerable
^ 1 Cisco FTD Software Release 6.2.1 is the first release that supports the
Cisco Firepower 2100 Series.
To upgrade to a fixed release of Cisco FTD Software, customers can 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-20190501-frpwr-dos
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2019-May-01 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection
Engine Denial of Service Vulnerabilities
Priority: High
Advisory ID: cisco-sa-20190501-frpwr-smb-snort
First Published: 2019 May 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvj83264CSCvj91418
CVE-2019-1696
CVE-2019-1704
CWE-400
CVSS Score:
7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:X/RL:X/RC:X
Summary
o Multiple vulnerabilities in the Server Message Block (SMB) Protocol
preprocessor detection engine for Cisco Firepower Threat Defense (FTD)
Software could allow an unauthenticated, adjacent or remote attacker to
cause a denial of service (DoS) condition.
For more information about these vulnerabilities, see the Details section
of this advisory.
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-20190501-frpwr-smb-snort
Affected Products
o Vulnerable Products
These vulnerabilities affect the following Cisco products that are running
a vulnerable release of Cisco FTD Software:
3000 Series Industrial Security Appliances (ISAs)
Adaptive Security Appliance (ASA) 5500-X Series Firewalls
ASA 5500-X Series with FirePOWER Services
Advanced Malware Protection (AMP) for Networks for FirePOWER 7000
Series Appliances
AMP for Networks for FirePOWER 8000 Series Appliances
Firepower 2100 Series
Firepower 4100 Series
FirePOWER 7000 Series Appliances
FirePOWER 8000 Series Appliances
Firepower 9300 Security Appliances
Firepower Threat Defense for Integrated Services Routers (ISRs)
FTD Virtual (FTDv)
Next-Generation Intrusion Prevention System (NGIPS)
For information about which Cisco FTD Software releases are vulnerable, see
the Fixed Software section of this advisory.
These vulnerabilities may also affect the open-source Snort project. For
more information, see the Snort website .
Determining the Cisco FTD Software Release
To determine which Cisco FTD Software release is running on a device,
administrators can log in to the device, use the show version command in
the CLI, and refer to the output of the command. The following example
shows the output of the command for a device that is running Cisco FTD
Software Release 6.2.0:
> show version
---------------------[ ftd ]---------------------
Model : Cisco ASA5525-X Threat Defense (75) Version 6.2.0 (Build 362)
UUID : 2849ba3c-ecb8-11e6-98ca-b9fc2975893c
Rules update version : 2017-03-15-001-vrt
VDB version : 279
----------------------------------------------------
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 the following
Cisco products:
Adaptive Security Appliance (ASA) Software
Firepower Management Center
Meraki MX Security Appliances
Details
o Two vulnerabilities in the SMB Protocol preprocessor detection engine for
Cisco FTD Software could allow an adjacent or remote attacker to cause a
DoS condition.
The vulnerabilities are not dependent on one another; exploitation of one
of the vulnerabilities is not required to exploit the other vulnerability.
Details about the vulnerabilities are as follows.
Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection
Engine Low System Memory Denial of Service Vulnerability
A vulnerability in the SMB Protocol preprocessor detection engine for Cisco
FTD Software could allow an unauthenticated, adjacent attacker to cause the
device to run low on system memory, which may cause the device to stop
forwarding traffic. A manual reload of the device may be required to clear
the condition.
The vulnerability is due to incorrect SMB ingress packet processing for
specific SMB packet types. An attacker could exploit this vulnerability by
sending a steady stream of crafted SMB packets to the targeted device from
the local subnet. A successful exploit could allow the attacker to cause
the device to run low on system memory, which could prevent the Snort
process from forwarding traffic. This vulnerability can be exploited using
IPv4 or IPv6 with either SMB Version 2 (SMBv2) or SMB Version 3 (SMBv3)
network traffic.
The Common Vulnerabilities and Exposures (CVE) ID for this vulnerability
is: CVE-2019-1696
The Security Impact Rating (SIR) for this vulnerability is: High
Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection
Engine Denial of Service Vulnerability
A vulnerability in the SMB Protocol preprocessor detection engine for Cisco
FTD Software could allow an unauthenticated, remote attacker to cause the
Snort process to unexpectedly restart, resulting in a denial of service
(DoS) condition.
The vulnerability is due to incorrect SMB ingress packet processing for
specific SMB packet types. An attacker could exploit this vulnerability by
sending a crafted SMB connection to the targeted device. A successful
exploit could allow the attacker to cause the Snort process to crash. This
vulnerability can be exploited using IPv4 or IPv6 with either SMBv2 or
SMBv3 network traffic.
The CVE ID for this vulnerability is: CVE-2019-1704
The SIR for this vulnerability is: High
Indicators of Compromise
o The Cisco Firepower Threat Defense Software SMB Protocol Preprocessor
Detection Engine Low System Memory Denial of Service Vulnerability could
cause the device to run low on system memory, which could cause the Snort
process to restart unexpectedly. If the following error log is observed,
customers are advised to contact the Cisco Technical Assistance Center
(TAC) to determine whether the vulnerability has been exploited on the
device.
Firepower-module1 kernel: [1111040.969265] snort invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0
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 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
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. To ensure a complete upgrade
solution, customers should consider that this advisory is part of a
collection that includes the following advisories:
cisco-sa-20190501-asa-csrf : Cisco Adaptive Security Appliance Software
Cross-Site Request Forgery Vulnerability
cisco-sa-20190501-asa-frpwrtd-dos : Cisco Adaptive Security Appliance
Software and Cisco Firepower Threat Defense Software TCP Timer Handling
Denial of Service Vulnerability
cisco-sa-20190501-asa-ftd-dos : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software WebVPN Denial of Service
Vulnerability
cisco-sa-20190501-asa-ftd-entropy : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software Low-Entropy Keys
Vulnerability
cisco-sa-20190501-asa-ftd-ike-dos : Cisco Adaptive Security Appliance
Software and Cisco Firepower Threat Defense Software MOBIKE Denial of
Service Vulnerability
cisco-sa-20190501-asaftd-saml-vpn : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software VPN SAML Authentication
Bypass Vulnerability
cisco-sa-20190501-asa-ipsec-dos : Cisco Adaptive Security Appliance
Software IPsec Denial of Service Vulnerability
cisco-sa-20190501-firepower-dos : Cisco Firepower Threat Defense
Software TCP Ingress Handler Denial of Service Vulnerability
cisco-sa-20190501-frpwr-dos: Cisco Firepower Threat Defense Software
Packet Processing Denial of Service Vulnerability
cisco-sa-20190501-frpwr-smb-snort : Cisco Firepower Threat Defense
Software SMB Protocol Preprocessor Detection Engine Denial of Service
Vulnerabilities
cisco-sa-20190501-sd-cpu-dos : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software WebVPN Denial of Service
Vulnerability
In the following table(s), the left column lists Cisco software releases.
The center column indicates whether a release is affected by the
vulnerabilities described in this advisory and the release that includes
the fix for these vulnerabilities. The right column indicates whether a
release is affected by all the vulnerabilities described in this collection
of advisories and which release includes fixes for those vulnerabilities.
Cisco FTD Software
Cisco FTD Recommended Release Recommended Release for All
Software for These Vulnerabilities Described in the
Release Vulnerabilities Collection of Advisories
6.0 6.2.3.12 6.2.3.12
6.0.1 6.2.3.12 6.2.3.12
6.1.0 6.2.3.12 6.2.3.12
6.2.0 6.2.3.12 6.2.3.12
6.2.1 6.2.3.12 6.2.3.12
6.2.2 6.2.3.12 6.2.3.12
6.2.3 6.2.3.12 6.2.3.12
6.3.0 Not vulnerable 6.3.0.3 (target week of 6 May 2019)
6.4.0 Not vulnerable Not vulnerable
To upgrade to a fixed release of Cisco FTD Software, customers can 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.
The Snort version that is installed depends on the FMC release.
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 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-20190501-frpwr-smb-snort
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2019-May-01 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco Firepower Threat Defense Software TCP Ingress Handler Denial of Service
Vulnerability
Priority: High
Advisory ID: cisco-sa-20190501-firepower-dos
First Published: 2019 May 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvf95761CSCvg76064CSCvk35736CSCvn51149
CVE-2018-15462
CWE-399
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 ingress handler for the data interfaces that are
configured with management access to Cisco Firepower Threat Defense (FTD)
Software could allow an unauthenticated, remote attacker to cause an
increase in CPU and memory usage, resulting in a denial of service (DoS)
condition.
The vulnerability is due to insufficient ingress TCP rate limiting for TCP
ports 22 (SSH) and 443 (HTTPS). An attacker could exploit this
vulnerability by sending a crafted, steady stream of TCP traffic to port 22
or 443 on the data interfaces that are configured with management access to
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-20190501-firepower-dos
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco products that are running a
vulnerable release of Cisco FTD Software:
3000 Series Industrial Security Appliances (ISAs)
Adaptive Security Appliance (ASA) 5500-X Series Firewalls
Firepower 2100 Series
Firepower 4100 Series
Firepower 9300 Security Appliances
FTD Virtual (FTDv)
For information about which Cisco FTD Software releases are vulnerable, see
the Fixed Software section of this advisory.
Determining the Cisco FTD Software Release
To determine which Cisco FTD Software release is running on a device,
administrators can log in to the device, use the show version command in
the CLI, and refer to the output of the command. The following example
shows the output of the command for a device that is running Cisco FTD
Software Release 6.2.0:
> show version
---------------------[ ftd ]---------------------
Model : Cisco ASA5525-X Threat Defense (75) Version 6.2.0 (Build 362)
UUID : 2849ba3c-ecb8-11e6-98ca-b9fc2975893c
Rules update version : 2017-03-15-001-vrt
VDB version : 279
----------------------------------------------------
Determining the SSH and HTTP Service Configurations
In the following table, the left column lists the Cisco FTD features that
may be vulnerable. The right column indicates the basic configuration for
the feature from the show running-config CLI command, if it can be
determined. If the device is configured with any of these features, the
device is affected by the vulnerability described in this advisory.
Cisco FTD Feature Vulnerable Configuration
HTTP service enabled http server enable <port>
^1,2 http <remote_ip_address> <remote_subnet_mask>
<interface_name>
SSH service enabled ^ ssh <remote_ip_address> <remote_subnet_mask>
1,3 <interface_name>
^ 1 The device is vulnerable only from an IP address in the configured HTTP
or SSH command range.
^ 2 All devices configured for FDM access have the HTTP service enabled.
^ 3 All devices that are managed by FMC have the SSH service enabled.
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 Adaptive
Security Appliance (ASA) 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
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. To ensure a complete upgrade
solution, customers should consider that this advisory is part of a
collection that includes the following advisories:
cisco-sa-20190501-asa-csrf : Cisco Adaptive Security Appliance Software
Cross-Site Request Forgery Vulnerability
cisco-sa-20190501-asa-frpwrtd-dos : Cisco Adaptive Security Appliance
Software and Cisco Firepower Threat Defense Software TCP Timer Handling
Denial of Service Vulnerability
cisco-sa-20190501-asa-ftd-dos : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software WebVPN Denial of Service
Vulnerability
cisco-sa-20190501-asa-ftd-entropy : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software Low-Entropy Keys
Vulnerability
cisco-sa-20190501-asa-ftd-ike-dos : Cisco Adaptive Security Appliance
Software and Cisco Firepower Threat Defense Software MOBIKE Denial of
Service Vulnerability
cisco-sa-20190501-asaftd-saml-vpn : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software VPN SAML Authentication
Bypass Vulnerability
cisco-sa-20190501-asa-ipsec-dos : Cisco Adaptive Security Appliance
Software IPsec Denial of Service Vulnerability
cisco-sa-20190501-firepower-dos : Cisco Firepower Threat Defense
Software TCP Ingress Handler Denial of Service Vulnerability
cisco-sa-20190501-frpwr-dos: Cisco Firepower Threat Defense Software
Packet Processing Denial of Service Vulnerability
cisco-sa-20190501-frpwr-smb-snort : Cisco Firepower Threat Defense
Software SMB Protocol Preprocessor Detection Engine Denial of Service
Vulnerabilities
cisco-sa-20190501-sd-cpu-dos : Cisco Adaptive Security Appliance
Software and Firepower Threat Defense Software WebVPN Denial of Service
Vulnerability
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 release that includes the
fix for this vulnerability. The right column indicates whether a release is
affected by all the vulnerabilities described in this collection of
advisories and which release includes fixes for those vulnerabilities.
Cisco FTD Software
Cisco FTD Recommended Release Recommended Release for All
Software for This Vulnerabilities Described in the
Release Vulnerability Collection of Advisories
6.0 6.2.3.12 6.2.3.12
6.0.1 6.2.3.12 6.2.3.12
6.1.0 6.2.3.12 6.2.3.12
6.2.0 6.2.3.12 6.2.3.12
6.2.1 6.2.3.12 6.2.3.12
6.2.2 6.2.3.12 6.2.3.12
6.2.3 6.2.3.12 6.2.3.12
6.3.0 6.3.0.3 (target week 6.3.0.3 (target week of 6 May 2019)
of 6 May 2019)
6.4.0 Not vulnerable Not vulnerable
To upgrade to a fixed release of Cisco FTD Software, customers can 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-20190501-firepower-dos
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2019-May-01 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
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