ESB-2018.3142.2 - UPDATE [Cisco] Cisco Wireless LAN Controller: Multiple vulnerabilities 2018-10-24

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                              ESB-2018.3142.2
  Cisco Wireless LAN Controller Software Control Multiple Vulnerabilities
                              24 October 2018

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

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

Product:           Cisco Wireless LAN Controller
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Access Privileged Data   -- Remote/Unauthenticated
                   Increased Privileges     -- Existing Account      
                   Denial of Service        -- Remote/Unauthenticated
                   Access Confidential Data -- Existing Account      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0443 CVE-2018-0442 CVE-2018-0420
                   CVE-2018-0417 CVE-2018-0416 

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-capwap-memory-leak
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-capwap-dos
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-traversal
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-gui-privesc
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-id

Revision History:  October 24 2018: Corrected fix information for WLC releases 
                                    prior to 8.0 and Release 8.0.
                   October 18 2018: Initial Release

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

Cisco Wireless LAN Controller Software Control and Provisioning of Wireless
Access Points Protocol Information Disclosure Vulnerability

Priority:        High

Advisory ID:     cisco-sa-20181017-wlc-capwap-memory-leak

First Published: 2018 October 17 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvf66680

                 CVE-2018-0442    

                 CWE-200

CVSS Score:      7.5  AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X

Summary

  o A vulnerability in the Control and Provisioning of Wireless Access Points
    (CAPWAP) protocol component of Cisco Wireless LAN Controller (WLC)
    Software could allow an unauthenticated, remote attacker to retrieve
    memory contents, which could lead to the disclosure of confidential
    information.
     
    The vulnerability is due to insufficient condition checks in the part of
    the code that handles CAPWAP keepalive requests. An attacker could exploit
    this vulnerability by sending a crafted CAPWAP keepalive packet to a
    vulnerable Cisco WLC device. A successful exploit could allow the attacker
    to retrieve the contents of device memory, which could lead to the
    disclosure of confidential information.

    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-20181017-wlc-capwap-memory-leak

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco WLC devices that are running a software
    release prior to the first fixed release.

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

    Determining the Cisco WLC Software Release

    To determine which Cisco WLC Software release is running on a device,
    administrators can use the controller's web interface or the CLI.

    To use the web interface, do the following:

     1. By using a browser, log in to the controller's web interface
     2. Click the Monitor tab
     3. Click Summary in the left pane
     4. Under Controller Summary, the Software Version field shows the release
        number of the software that is currently running on the device

    To use the CLI, log in to the controller via Telnet, issue the show
    sysinfo command, and then refer to the value in the Product Version field
    of the command output. The following example shows the command output for
    a device that is running Cisco WLC Software Release 8.3.102.0:

        (wlc)> show sysinfo

        Manufacturer's Name.............................. Cisco Systems Inc.
        Product Name..................................... Cisco Controller
        Product Version.................................. 8.3.102.0
        Bootloader Version............................... 1.0.1
        Field Recovery Image Version..................... 6.0.182.0
        Firmware Version................................. FPGA 1.3, Env 1.6, USB console 1.27
        Build Type....................................... DATA + WPS
        .
        .
        .

    Products Confirmed Not Vulnerable

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

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

    To help ensure a complete upgrade solution, consider that this advisory is
    part of a collection that includes the following advisories:

       cisco-sa-20181017-wlc-gui-privesc: Cisco Wireless LAN Controller
        Software GUI Privilege Escalation Vulnerability
       cisco-sa-20181017-ap-ft-dos: Cisco IOS Access Points Software 802.11r
        Fast Transition Denial of Service Vulnerability
       cisco-sa-20181017-wlc-capwap-memory-leak: Cisco Wireless LAN
        Controller Software Control and Provisioning of Wireless Access Points
        Protocol Information Disclosure Vulnerability
       cisco-sa-20181017-wlc-capwap-dos: Cisco Wireless LAN Controller
        Software Control and Provisioning of Wireless Access Points Protocol
        Denial of Service Vulnerability

    Customers should upgrade to an appropriate release as indicated in the
    table in this section. In the following table, the left column lists major
    releases of Cisco software, and the center column indicates the first
    minor release that includes the fix for this vulnerability. The right
    column indicates which release is recommended to address this
    vulnerability.

    Cisco Wireless LAN Controller First Fixed Release for  Recommended Release for
    Major Software Release        This Vulnerability       This Vulnerability
    Prior to 8.0                  8.2.170.0                8.2.170.0 
    8.0                           8.2.170.0                8.2.170.0
    8.1                           8.2.170.0                8.2.170.0
    8.2                           8.2.170.0                8.2.170.0
    8.3                           8.3.140.0                8.3.143.0
    8.4                           8.5.110.0                8.5.135.0
    8.5                           8.5.110.0                8.5.135.0
    8.6                           8.6.101.0                8.7.106.0
    8.7                           8.7.102.0                8.7.106.0
    8.8                           Not vulnerable           Not vulnerable



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.

Subscribe to Cisco Security Notifications

  o Subscribe

Related to This Advisory

  o Cisco Event Response: October 2018 Cisco Wireless LAN Controller Security
    Advisory Collection

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-capwap-memory-leak

Revision History

  o 
    +----------+---------------------------+----------+--------+------------------+
    | Version  |        Description        | Section  | Status |       Date       |
    +----------+---------------------------+----------+--------+------------------+
    | 1.0      | Initial public release.   | -        | Final  | 2018-October-17  |
    +----------+---------------------------+----------+--------+------------------+


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

Cisco Security Advisory

Cisco Wireless LAN Controller Software Control and Provisioning of Wireless
Access Points Protocol Denial of Service Vulnerability

Priority:         High

Advisory ID:      cisco-sa-20181017-wlc-capwap-dos

First Published:  2018 October 17 16:00 GMT

Last Updated:     2018 October 22 12:53 GMT

Version 1.1:      Final

Workarounds:      No workarounds available

Cisco Bug IDs:    CSCvf66696
           
                  CVE-2018-0443
           
                  CWE-399

CVSS Score:       Base 8.6 CVSS:3.0/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 Control and Provisioning of Wireless Access Points
    (CAPWAP) protocol component of Cisco Wireless LAN Controller (WLC) Software
    could allow an unauthenticated, remote attacker to cause a denial of
    service (DoS) condition.

    The vulnerability is due to improper input validation on fields within
    CAPWAP Discovery Request packets by the affected device. An attacker could
    exploit this vulnerability by sending malicious CAPWAP Discovery Request
    packets to the Cisco WLC Software. A successful exploit could allow the
    attacker to cause the Cisco WLC Software to disconnect associated access
    points (APs). While the APs disconnect and reconnect, service will be
    unavailable for a brief period of time, 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-20181017-wlc-capwap-dos

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco WLC devices that are running a software
    release prior to the first fixed release.

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

    Determining the Cisco WLC Software Release

    To determine which Cisco WLC Software release is running on a device,
    administrators can use the controller's web interface or the CLI.

    To use the web interface, do the following:

     1. By using a browser, log in to the controller's web interface
     2. Click the Monitor tab
     3. Click Summary in the left pane
     4. Under Controller Summary, the Software Version field shows the release
        number of the software that is currently running on the device

    To use the CLI, log in to the controller via Telnet, issue the show sysinfo
    command, and then refer to the value in the Product Version field of the
    command output. The following example shows the command output for a device
    that is running Cisco WLC Software Release 8.3.102.0:

        (wlc)> show sysinfo

        Manufacturer's Name.............................. Cisco Systems Inc.
        Product Name..................................... Cisco Controller
        Product Version.................................. 8.3.102.0
        Bootloader Version............................... 1.0.1
        Field Recovery Image Version..................... 6.0.182.0
        Firmware Version................................. FPGA 1.3, Env 1.6, USB console 1.27
        Build Type....................................... DATA + WPS
        .
        .
        .

    Products Confirmed Not Vulnerable

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

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

    To help ensure a complete upgrade solution, consider that this advisory is
    part of a collection that includes the following advisories:

      - cisco-sa-20181017-wlc-gui-privesc: Cisco Wireless LAN Controller
        Software GUI Privilege Escalation Vulnerability
      - cisco-sa-20181017-ap-ft-dos: Cisco IOS Access Points Software 802.11r
        Fast Transition Denial of Service Vulnerability
      - cisco-sa-20181017-wlc-capwap-memory-leak: Cisco Wireless LAN Controller
        Software Control and Provisioning of Wireless Access Points Protocol
        Information Disclosure Vulnerability
      - cisco-sa-20181017-wlc-capwap-dos: Cisco Wireless LAN Controller
        Software Control and Provisioning of Wireless Access Points Protocol
        Denial of Service Vulnerability

    Customers should upgrade to an appropriate release as indicated in the
    table in this section. In the following table, the left column lists major
    releases of Cisco software, and the center column indicates the first minor
    release that includes the fix for this vulnerability. The right column
    indicates which release is recommended to address this vulnerability.

    Cisco Wireless LAN Controller First Fixed Release for  Recommended Release for
    Major Software Release        This Vulnerability       This Vulnerability
    Prior to 8.0                  8.3.140.0                8.3.143.0
    8.0                           8.3.140.0                8.3.143.0
    8.1                           8.3.140.0                8.3.143.0
    8.2                           8.3.140.0                8.3.143.0
    8.3                           8.3.140.0                8.3.143.0
    8.4                           8.5.110.0                8.5.135.0
    8.5                           8.5.110.0                8.5.135.0
    8.6                           8.6.101.0                8.7.106.0
    8.7                           8.7.102.0                8.7.106.0
    8.8                           Not vulnerable           Not vulnerable



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.

Subscribe to Cisco Security Notifications

  o Subscribe

Related to This Advisory

  o Cisco Event Response: October 2018 Cisco Wireless LAN Controller Security
    Advisory Collection

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20181017-wlc-capwap-dos

Revision History

  o
    +---------+-----------------------------+----------+--------+-----------------+
    | Version |         Description         | Section  | Status |      Date       |
    +---------+-----------------------------+----------+--------+-----------------+
    |         | Corrected fix information   | Fixed    |        |                 |
    | 1.1     | for WLC releases prior to   | Software | Final  | 2018-October-22 |
    |         | 8.0 and Release 8.0.        |          |        |                 |
    +---------+-----------------------------+----------+--------+-----------------+
    | 1.0     | Initial public release.     | --        | Final  | 2018-October-17 |
    +---------+-----------------------------+----------+--------+-----------------+

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

Cisco Wireless LAN Controller Software Directory Traversal Vulnerability

Priority:        Medium

Advisory ID:     cisco-sa-20181017-wlc-traversal

First Published: 2018 October 17 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvf66723

CVE-2018-0420    

CWE-22

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

Summary

  o A vulnerability in the web-based interface of Cisco Wireless LAN
    Controller Software could allow an authenticated, remote attacker to view
    sensitive information.

    The issue is due to improper sanitization of user-supplied input in HTTP
    request parameters that describe filenames and pathnames. An attacker
    could exploit this vulnerability by using directory traversal techniques
    to submit a path to a desired file location. A successful exploit could
    allow the attacker to view system files on the targeted device, which may
    contain sensitive information.

    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-20181017-wlc-traversal

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco Wireless LAN Controller Software. For
    information about affected software releases, consult the Cisco bug ID(s)
    at the top 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.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o For information about fixed software releases, consult the Cisco bug ID(s)
    at the top of this advisory.

    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.

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.

Subscribe to Cisco Security Notifications

  o Subscribe

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-traversal

Revision History

  o 
    +----------+---------------------------+----------+--------+------------------+
    | Version  |        Description        | Section  | Status |       Date       |
    +----------+---------------------------+----------+--------+------------------+
    | 1.0      | Initial public release.   | -        | Final  | 2018-October-17  |
    +----------+---------------------------+----------+--------+------------------+

Legal Disclaimer

  o THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
    OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
    FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
    OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES
    THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. CISCO EXPECTS TO
    UPDATE THIS DOCUMENT AS NEW INFORMATION BECOMES AVAILABLE.

    A standalone copy or paraphrase of the text of this document that omits the
    distribution URL is an uncontrolled copy and may lack important information
    or contain factual errors. The information in this document is intended for
    end users of Cisco products.


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

Cisco Wireless LAN Controller Software GUI Privilege Escalation Vulnerability

Priority:        High

Advisory ID:     cisco-sa-20181017-wlc-gui-privesc

First Published: 2018 October 17 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvh65876

CVE-2018-0417    

CWE-264

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

Summary

  o A vulnerability in TACACS authentication with Cisco Wireless LAN
    Controller (WLC) Software could allow an authenticated, local attacker to
    perform certain operations within the GUI that are not normally available
    to that user on the CLI.

    The vulnerability is due to incorrect parsing of a specific TACACS
    attribute received in the TACACS response from the remote TACACS server.
    An attacker could exploit this vulnerability by authenticating via TACACS
    to the GUI on the affected device. A successful exploit could allow an
    attacker to create local user accounts with administrative privileges on
    an affected WLC and execute other commands that are not allowed from the
    CLI and should be prohibited.

    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-20181017-wlc-gui-privesc

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco Wireless LAN Controllers that are running
    a software release prior to the first fixed release and are configured for
    TACACS authorization. If TACACS authorization is not configured, the WLC
    is not vulnerable.

    Determine If TACACS Authorization Is Configured

    If the show tacacs-server feature is not available, this indicates that
    the TACACS feature (feature tacacs) is not enabled and the device is not
    affected by this vulnerability. The following example displays the output
    an administrator may use to verify if the device is vulnerable. 

    If no output is shown under the tables after issuing the command show
    tacas summary, the device is not running the TACACS service and is not
    vulnerable. The following output shows an example of output from a
    vulnerable device running the TACACS service.

        (wlc) >show tacacs summary
        Authentication Servers

        Idx  Server Address    Port    State     Tout
        ---  ----------------  ------  --------  ----
        1    10.1.1.12         49      Enabled   2

        Authorization Servers

        Idx  Server Address    Port    State     Tout
        ---  ----------------  ------  --------  ----
        1    10.1.1.12         49      Enabled   2

        Accounting Servers

        Idx  Server Address    Port    State     Tout
        ---  ----------------  ------  --------  ----
        1    10.1.1.12         49      Enabled   2

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

    Determining the Cisco WLC Software Release

    To determine which Cisco WLC Software release is running on a device,
    administrators can use the controller's web interface or the CLI.

    To use the web interface, do the following:

     1. By using a browser, log in to the controller's web interface
     2. Click the Monitor tab
     3. Click Summary in the left pane
     4. Under Controller Summary, the Software Version field shows the release
        number of the software that is currently running on the device

    To use the CLI, log in to the controller via Telnet, issue the show
    sysinfo command, and then refer to the value in the Product Version field
    of the command output. The following example shows the command output for
    a device that is running Cisco WLC Software Release 8.3.102.0:

        (wlc)> show sysinfo

        Manufacturer's Name.............................. Cisco Systems Inc.
        Product Name..................................... Cisco Controller
        Product Version.................................. 8.3.102.0
        Bootloader Version............................... 1.0.1
        Field Recovery Image Version..................... 6.0.182.0
        Firmware Version................................. FPGA 1.3, Env 1.6, USB console 1.27
        Build Type....................................... DATA + WPS
        .
        .
        .

    Products Confirmed Not Vulnerable

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

Workarounds

  o There are no workarounds that address this vulnerability. As a mitigation,
    customers may choose to implement access control lists (ACLs) to filter or
    restrict management access on a configured device.

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

    To help ensure a complete upgrade solution, consider that this advisory is
    part of a collection that includes the following advisories:

       cisco-sa-20181017-wlc-gui-privesc: Cisco Wireless LAN Controller
        Software GUI Privilege Escalation Vulnerability
       cisco-sa-20181017-ap-ft-dos: Cisco IOS Access Points Software 802.11r
        Fast Transition Denial of Service Vulnerability
       cisco-sa-20181017-wlc-capwap-memory-leak: Cisco Wireless LAN
        Controller Software Control and Provisioning of Wireless Access Points
        Protocol Information Disclosure Vulnerability
       cisco-sa-20181017-wlc-capwap-dos: Cisco Wireless LAN Controller
        Software Control and Provisioning of Wireless Access Points Protocol
        Denial of Service Vulnerability

    Customers should upgrade to an appropriate release as indicated in the
    table in this section. In the following table, the left column lists major
    releases of Cisco software, and the center column indicates the first
    minor release that includes the fix for this vulnerability. The right
    column indicates which release is recommended to address this
    vulnerability.

    Cisco Wireless LAN Controller First Fixed Release for  Recommended Release for
    Major Software Release        This Vulnerability       This Vulnerability
    Prior to 8.0                  8.2.170.0                8.2.170.0 
    8.0                           8.2.170.0                8.2.170.0
    8.1                           8.2.170.0                8.2.170.0
    8.2                           8.2.170.0                8.2.170.0
    8.3                           Available from TAC^1     Available from TAC^1
    8.4                           8.5.131.0                8.5.135.0
    8.5                           8.5.131.0                8.5.135.0
    8.6                           8.7.102.0                8.7.106.0
    8.7                           8.7.102.0                8.7.106.0
    8.8                           Not vulnerable           Not vulnerable


    ^1 The 8.3 Maintenance Release 4 escalation image is available from Cisco
    TAC upon request.

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.

Subscribe to Cisco Security Notifications

  o Subscribe

Related to This Advisory

  o Cisco Event Response: October 2018 Cisco Wireless LAN Controller Security
    Advisory Collection

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-gui-privesc

Revision History

  o 
    +----------+---------------------------+----------+--------+------------------+
    | Version  |        Description        | Section  | Status |       Date       |
    +----------+---------------------------+----------+--------+------------------+
    | 1.0      | Initial public release.   | -        | Final  | 2018-October-17  |
    +----------+---------------------------+----------+--------+------------------+

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

Cisco Wireless LAN Controller Software Information Disclosure Vulnerability

Priority:        Medium

Advisory ID:     cisco-sa-20181017-wlc-id

First Published: 2018 October 17 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvj95336

CVE-2018-0416    

CWE-20

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

Summary

  o A vulnerability in the web-based interface of Cisco Wireless LAN
    Controller (WLC) Software could allow an unauthenticated, remote attacker
    to view system information that under normal circumstances should be
    prohibited.

    The vulnerability is due to incomplete input and validation checking
    mechanisms in the web-based interface URL request. An attacker could
    exploit this vulnerability by requesting specific URLs via the web-based
    interface. A successful exploit could allow the attacker to view sensitive
    system information.

    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-20181017-wlc-id

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco Wireless LAN Controller Software on the
    following devices:

       Physical wireless LAN controllers
       Virtual wireless LAN controllers
       802.11ac Wave2 access points that are running in Mobility Express mode
        and configured as a wireless LAN controller

    For information about affected software releases, consult the Cisco bug ID
    (s) at the top 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 Wireless LAN Controllers that are running Cisco IOS XE Software are
    not affected by this vulnerability.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o For information about fixed software releases, consult the Cisco bug ID(s)
    at the top of this advisory.

    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.

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.

Subscribe to Cisco Security Notifications

  o Subscribe

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-id

Revision History

  o 
    +----------+---------------------------+----------+--------+------------------+
    | Version  |        Description        | Section  | Status |       Date       |
    +----------+---------------------------+----------+--------+------------------+
    | 1.0      | Initial public release.   | -        | Final  | 2018-October-17  |
    +----------+---------------------------+----------+--------+------------------+

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

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