[apops] Cisco Security Advisory: Cisco IOS Software Session Initiation P

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  • Subject: [apops] Cisco Security Advisory: Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerabilities
  • From: Cisco Systems Product Security Incident Response Team <psirt at cisco dot com>
  • Date: Wed, 28 Sep 2011 12:00:00 -0400
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      Cisco Security Advisory: Cisco IOS Software Session Initiation
      Protocol Denial of Service Vulnerabilities
      
      Advisory ID: cisco-sa-20110928-sip
      
      Revision 1.0
      
      For Public Release 2011 September 28 1600 UTC (GMT)
      
      +--------------------------------------------------------------------
      
      Summary
      =======
      
      Multiple vulnerabilities exist in the Session Initiation Protocol
      (SIP) implementation in Cisco IOS Software and Cisco IOS XE Software
      that could allow an unauthenticated, remote attacker to cause a
      reload of an affected device or trigger memory leaks that may result
      in system instabilities. Affected devices would need to be configured
      to process SIP messages for these vulnerabilities to be exploitable.
      
      Cisco has released free software updates that address these
      vulnerabilities. There are no workarounds for devices that must run
      SIP; however, mitigations are available to limit exposure to the
      vulnerabilities.
      
      This advisory is posted at
      http://www.cisco.com/warp/public/707/cisco-sa-20110928-sip.shtml.
      
      Note: The September 28, 2011, Cisco IOS Software Security Advisory
      bundled publication includes ten Cisco Security Advisories. Nine of the
      advisories address vulnerabilities in Cisco IOS Software, and one
      advisory addresses a vulnerability in Cisco Unified Communications
      Manager. Each advisory lists the Cisco IOS Software releases that
      correct the vulnerability or vulnerabilities detailed in the advisory as
      well as the Cisco IOS Software releases that correct all vulnerabilities
      in the September 2011 Bundled Publication.
      
      Individual publication links are in "Cisco Event Response: Semiannual
      Cisco IOS Software Security Advisory Bundled Publication" at the
      following link:
      
      http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep11.html
      
      Cisco Unified Communications Manager (CUCM) is affected by one of the
      vulnerabilities described in this advisory. A separate Cisco Security
      Advisory has been published to disclose the vulnerability that affects
      the Cisco Unified Communications Manager at the following location:
      
      http://www.cisco.com/warp/public/707/cisco-sa-20110928-cucm.shtml
      
      Vulnerable Products
      +------------------
      
      Cisco devices are affected when they are running affected Cisco IOS
      Software and Cisco IOS XE Software versions that are configured to
      process SIP messages.
      
      Recent versions of Cisco IOS Software do not process SIP messages by
      default. Creating a dial peer by issuing the "dial-peer voice"
      configuration command will start the SIP processes, causing the Cisco
      IOS device to process SIP messages. In addition, several features in
      Cisco Unified Communications Manager Express, such as ephones, will
      automatically start the SIP process when they are configured, which
      could cause the affected device to start processing SIP messages. An
      example of an affected configuration follows:
      
          dial-peer voice <Voice dial-peer tag> voip
           ...
          !
      
      In addition to inspecting the Cisco IOS device configuration for a
      "dial-peer" command that causes the device to process SIP messages,
      administrators can also use the "show processes | include SIP" command
      to determine whether Cisco IOS Software is running the processes that
      handle SIP messages. In the following example, the presence of the
      processes CCSIP_UDP_SOCKET or CCSIP_TCP_SOCKET indicates that the Cisco
      IOS device will process SIP messages:
      
          Router# show processes | include SIP
           149 Mwe 40F48254            4          1    400023108/24000  0 CCSIP_UDP_SOCKET
           150 Mwe 40F48034            4          1    400023388/24000  0 CCSIP_TCP_SOCKET
      
      Note: Because there are several ways a device running Cisco IOS Software
      can start processing SIP messages, the "show processes | include SIP"
      command should be used to determine whether the device is processing SIP
      messages instead of relying on the presence of specific configuration
      commands.
      
      Cisco Unified Border Element images are also affected by two of these
      vulnerabilities.
      
      Note: The Cisco Unified Border Element feature (previously known as
      the Cisco Multiservice IP-to-IP Gateway) is a special Cisco IOS
      Software image that runs on Cisco multiservice gateway platforms.
      This feature provides a network-to-network interface point for
      billing, security, call admission control, quality of service, and
      signaling interworking.
      
      To determine the Cisco IOS Software release that is running on a
      Cisco product, administrators can log in to the device and issue the
      "show version" command to display the system banner. The system banner
      confirms that the device is running Cisco IOS Software by displaying
      text similar to "Cisco Internetwork Operating System Software" or
      "Cisco IOS Software." The image name displays in parentheses,
      followed by "Version" and the Cisco IOS Software release name. Other
      Cisco devices do not have the "show version" command or may provide
      different output.
      
      The following example identifies a Cisco product that is running
      Cisco IOS Software Release 15.0(1)M1 with an installed image name of
      C3900-UNIVERSALK9-M:
      
          Router> show version
          Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.0(1)M1, RELEASE SOFTWARE (fc1)
          Technical Support: http://www.cisco.com/techsupport
          Copyright (c) 1986-2009 by Cisco Systems, Inc.
          Compiled Wed 02-Dec-09 17:17 by prod_rel_team
      
          !--- output truncated
      
      Additional information about Cisco IOS Software release
      naming conventions is available in the white paper Cisco
      IOS and NX-OS Software Reference Guide available at
      http://www.cisco.com/web/about/security/intelligence/ios-ref.html.
      
      Cisco IOS XE Software is affected by these vulnerabilities.
      
      Note: Cisco Unified Communications Manager is affected by one of the
      vulnerabilities described in this advisory. A separate Cisco Security
      Advisory has been published to disclose the vulnerability that affects
      the Cisco Unified Communications Manager at the following location:
      
      http://www.cisco.com/warp/public/707/cisco-sa-20110928-cucm.shtml
      
      Products Confirmed Not Vulnerable
      +--------------------------------
      
      The SIP application layer gateway (ALG), which is used by the Cisco
      IOS Network Address Translation (NAT) and firewall features of Cisco
      IOS Software, is not affected by these vulnerabilities.
      
      Cisco IOS XR Software is not affected by these vulnerabilities.
      
      No other Cisco products are currently known to be affected by these
      vulnerabilities.
      
      Details
      =======
      
      SIP is a popular signaling protocol that is used to manage voice and
      video calls across IP networks such as the Internet. SIP is
      responsible for handling all aspects of call setup and termination.
      Voice and video are the most popular types of sessions that SIP
      handles, but the protocol has the flexibility to accommodate other
      applications that require call setup and termination. SIP call
      signaling can use UDP (port 5060), TCP (port 5060), or Transport
      Layer Security (TLS; TCP port 5061) as the underlying transport
      protocol.
      
      Multiple vulnerabilities exist in the SIP implementation in Cisco IOS
      Software that could allow a remote attacker to cause an affected
      device to reload or to trigger memory leaks that may result in system
      instabilities. These vulnerabilities are triggered when the device
      that is running Cisco IOS Software processes crafted SIP messages.
      Only traffic destined to the device can trigger the vulnerabilities;
      transit SIP traffic is not an exploit vector.
      
      Note: In cases where SIP is running over TCP transport, a TCP
      three-way handshake is necessary to exploit these vulnerabilities.
      
      The vulnerabilities are as follow:
      
      CSCth03022 may cause a reload of an affected device. This vulnerability
      has been assigned Common Vulnerabilities and Exposures (CVE) ID
      CVE-2011-0939.
      
      CSCti48504 may cause memory leaks. This vulnerability has been assigned
      CVE ID CVE-2011-3275.
      
      CSCto88686 may cause memory leaks or reloads of affected devices. This
      vulnerability has been assigned CVE ID CVE-2011-2072.
      
      Note: this vulnerability also affects Cisco Unified Communications
      Manager. The corresponding Cisco bug ID is CSCtl86047. Refer to the
      separate Cisco Security Advisory for the Cisco Unified Communications
      Manager for additional details.
      
      Vulnerability Scoring Details
      =============================
      
      Cisco has provided scores for the vulnerabilities in this advisory
      based on the Common Vulnerability Scoring System (CVSS). The CVSS
      scoring in this Security Advisory is done in accordance with CVSS
      version 2.0.
      
      CVSS is a standards-based scoring method that conveys vulnerability
      severity and helps determine urgency and priority of response.
      
      Cisco has provided a base and temporal score. Customers can then
      compute environmental scores to assist in determining the impact of
      the vulnerability in individual networks.
      
      Cisco has provided an FAQ to answer additional questions regarding
      CVSS at:
      
      http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html
      
      Cisco has also provided a CVSS calculator to help compute the
      environmental impact for individual networks at
      
      http://intellishield.cisco.com/security/alertmanager/cvss
      
      Note that all vulnerabilities in this advisory (CSCth03022, CSCti48504,
      and CSCto88686) have been scored in an identical manner, assuming a
      complete denial of service (DoS) condition.
      
      * CSCth03022, CSCti48504, CSCto88686
      
      CVSS Base Score - 7.8
          Access Vector -            Network
          Access Complexity -        Low
          Authentication -           None
          Confidentiality Impact -   None
          Integrity Impact -         None
          Availability Impact -      Complete
      
      CVSS Temporal Score - 6.4
          Exploitability -           Functional
          Remediation Level -        Official-Fix
          Report Confidence -        Confirmed
      
      
      Impact
      ======
      
      Successful exploitation of the vulnerabilities in this advisory may
      result in system instabilities or a reload of an affected device.
      Repeated exploitation could result in a sustained DoS condition.
      
      Software Versions and Fixes
      ===========================
      
      When considering software upgrades, also consult
      http://www.cisco.com/go/psirt and any subsequent advisories to determine
      exposure and a complete upgrade solution.
      
      In all cases, customers should exercise caution to be certain the
      devices to be upgraded contain sufficient memory and that current
      hardware and software configurations will continue to be supported
      properly by the new release. If the information is not clear, contact
      the Cisco Technical Assistance Center (TAC) or your contracted
      maintenance provider for assistance.
      
      Additionally, the Cisco IOS Software Checker is available on
      the Cisco Security Intelligence Operations (SIO) portal at
      http://tools.cisco.com/security/center/selectIOSVersion.x. It provides
      several features for checking which Security Advisories affect specified
      versions of Cisco IOS Software.
      
      Cisco IOS Software
      +-----------------
      
      Each row of the following Cisco IOS Software table corresponds to a
      Cisco IOS Software train. If a particular train is vulnerable, the
      earliest releases that contain the fix are listed in the First Fixed
      Release For This Advisory column. The First Fixed Release for All
      Advisories in the September 2011 Bundled Publication column lists the
      earliest possible releases that correct all the published
      vulnerabilities in the Cisco IOS Software Security Advisory bundled
      publication. Cisco recommends upgrading to the latest available
      release, where possible.
      
      +------------------------------------------------------------+
      |   Major    |         Availability of Repaired Releases     |
      |  Release   |                                               |
      |------------+-----------------------------------------------|
      |  Affected  |                       |  First Fixed Release  |
      | 12.0-Based |  First Fixed Release  | for All Advisories in |
      |  Releases  |                       |  the September 2011   |
      |            |                       |  Bundled Publication  |
      |------------------------------------------------------------|
      | There are no affected 12.0 based releases                  |
      |------------------------------------------------------------|
      |  Affected  |                       |  First Fixed Release  |
      | 12.1-Based |  First Fixed Release  | for All Advisories in |
      |  Releases  |                       |  the September 2011   |
      |            |                       |  Bundled Publication  |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.1E      | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SXF               |
      |------------+-----------------------+-----------------------|
      |  Affected  |                       |  First Fixed Release  |
      | 12.2-Based |  First Fixed Release  | for All Advisories in |
      |  Releases  |                       |  the September 2011   |
      |            |                       |  Bundled Publication  |
      |------------+-----------------------+-----------------------|
      | 12.2       | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      | 12.2B      | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      | 12.2BC     | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      | 12.2BW     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2BX     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SB                |
      |------------+-----------------------+-----------------------|
      | 12.2BY     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2BZ     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2CX     | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      | 12.2CY     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2CZ     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SB                |
      |------------+-----------------------+-----------------------|
      | 12.2DA     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2DD     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2DX     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2EU     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Releases up to and    |
      | 12.2EW     | Not vulnerable        | including 12.2(20)EW4 |
      |            |                       | are not vulnerable.   |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2EWA    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 12.2EX     | Not vulnerable        | 12.2(55)EX3           |
      |------------+-----------------------+-----------------------|
      | 12.2EY     | Not vulnerable        | 12.2(58)EY            |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; migrate   |
      | 12.2EZ     | Not vulnerable        | to any release in     |
      |            |                       | 15.0SE                |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2FX     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SE                |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2FY     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2EX                |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2FZ     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SE                |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; migrate   |
      | 12.2IRA    | Not vulnerable        | to any release in     |
      |            |                       | 12.2IRG               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; migrate   |
      | 12.2IRB    | Not vulnerable        | to any release in     |
      |            |                       | 12.2IRG               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; migrate   |
      | 12.2IRC    | Not vulnerable        | to any release in     |
      |            |                       | 12.2IRG               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2IRD    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2IRE    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; migrate   |
      | 12.2IRF    | Not vulnerable        | to any release in     |
      |            |                       | 12.2IRG               |
      |------------+-----------------------+-----------------------|
      | 12.2IRG    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2IXA    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2IXB    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2IXC    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2IXD    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2IXE    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2IXF    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2IXG    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2IXH    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 12.2JA     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2JK     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2MB     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2MC     | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2MRA    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SRD               |
      |------------+-----------------------+-----------------------|
      | 12.2MRB    | Not vulnerable        | 12.2(33)MRB5          |
      |------------+-----------------------+-----------------------|
      |            |                       | Releases prior to     |
      |            |                       | 12.2(30)S are         |
      |            |                       | vulnerable; Releases  |
      | 12.2S      | Not vulnerable        | 12.2(30)S and later   |
      |            |                       | are not vulnerable.   |
      |            |                       | First fixed in        |
      |            |                       | Release 12.2SB        |
      |------------+-----------------------+-----------------------|
      | 12.2SB     | Not vulnerable        | 12.2(31)SB2012.2(33)  |
      |            |                       | SB10                  |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SBC    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SB                |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SCA    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SCC               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SCB    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SCC               |
      |------------+-----------------------+-----------------------|
      | 12.2SCC    | Not vulnerable        | 12.2(33)SCC7          |
      |------------+-----------------------+-----------------------|
      | 12.2SCD    | Not vulnerable        | 12.2(33)SCD6          |
      |------------+-----------------------+-----------------------|
      | 12.2SCE    | Not vulnerable        | 12.2(33)SCE112.2(33)  |
      |            |                       | SCE2                  |
      |------------+-----------------------+-----------------------|
      | 12.2SCF    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2SE     | Not vulnerable        | 12.2(55)SE312.2(58)SE |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SEA    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SE                |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SEB    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SE                |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SEC    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SE                |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SED    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SE                |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SEE    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SE                |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SEF    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SE                |
      |------------+-----------------------+-----------------------|
      |            |                       | Releases prior to     |
      |            |                       | 12.2(25)SEG4 are      |
      |            |                       | vulnerable; Releases  |
      | 12.2SEG    | Not vulnerable        | 12.2(25)SEG4 and      |
      |            |                       | later are not         |
      |            |                       | vulnerable. First     |
      |            |                       | fixed in Release      |
      |            |                       | 12.2EX                |
      |------------+-----------------------+-----------------------|
      |            |                       | Releases prior to     |
      |            |                       | 12.2(53)SG4 are       |
      | 12.2SG     | Not vulnerable        | vulnerable; Releases  |
      |            |                       | 12.2(53)SG4 and later |
      |            |                       | are not vulnerable.   |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2SGA    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 12.2SL     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2SM     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 12.2SO     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2SQ     | Not vulnerable        | 12.2(50)SQ3           |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SRA    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SRD               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SRB    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SRD               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SRC    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SRD               |
      |------------+-----------------------+-----------------------|
      | 12.2SRD    | Not vulnerable        | 12.2(33)SRD6          |
      |------------+-----------------------+-----------------------|
      | 12.2SRE    | Not vulnerable        | 12.2(33)SRE4          |
      |------------+-----------------------+-----------------------|
      | 12.2STE    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2SU     | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      |            |                       | Releases prior to     |
      |            |                       | 12.2(29a)SV are       |
      |            |                       | vulnerable; Releases  |
      | 12.2SV     | Not vulnerable        | 12.2(29a)SV and later |
      |            |                       | are not vulnerable.   |
      |            |                       | Migrate to any        |
      |            |                       | release in 12.2SVD    |
      |------------+-----------------------+-----------------------|
      | 12.2SVA    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2SVC    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2SVD    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2SVE    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2SW     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SX     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SXF               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SXA    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SXF               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SXB    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SXF               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SXD    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SXF               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SXE    | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SXF               |
      |------------+-----------------------+-----------------------|
      | 12.2SXF    | Not vulnerable        | 12.2(18)SXF17b        |
      |------------+-----------------------+-----------------------|
      | 12.2SXH    | Not vulnerable        | 12.2(33)SXH8a         |
      |------------+-----------------------+-----------------------|
      | 12.2SXI    | Not vulnerable        | 12.2(33)SXI6          |
      |------------+-----------------------+-----------------------|
      | 12.2SXJ    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2SY     | Not vulnerable        | 12.2(50)SY            |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2SZ     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SB                |
      |------------+-----------------------+-----------------------|
      | 12.2T      | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2TPC    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 12.2XA     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XB     | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      | 12.2XC     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XD     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XE     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XF     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XG     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XH     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XI     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XJ     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XK     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XL     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XM     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XN     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XNA    | See Cisco IOS-XE      | See Cisco IOS-XE      |
      |            | Software Availability | Software Availability |
      |------------+-----------------------+-----------------------|
      | 12.2XNB    | See Cisco IOS-XE      | See Cisco IOS-XE      |
      |            | Software Availability | Software Availability |
      |------------+-----------------------+-----------------------|
      | 12.2XNC    | See Cisco IOS-XE      | See Cisco IOS-XE      |
      |            | Software Availability | Software Availability |
      |------------+-----------------------+-----------------------|
      | 12.2XND    | See Cisco IOS-XE      | See Cisco IOS-XE      |
      |            | Software Availability | Software Availability |
      |------------+-----------------------+-----------------------|
      | 12.2XNE    | See Cisco IOS-XE      | See Cisco IOS-XE      |
      |            | Software Availability | Software Availability |
      |------------+-----------------------+-----------------------|
      | 12.2XNF    | See Cisco IOS-XE      | See Cisco IOS-XE      |
      |            | Software Availability | Software Availability |
      |------------+-----------------------+-----------------------|
      |            |                       | Releases prior to     |
      |            |                       | 12.2(54)XO are        |
      | 12.2XO     | Not vulnerable        | vulnerable; Releases  |
      |            |                       | 12.2(54)XO and later  |
      |            |                       | are not vulnerable.   |
      |------------+-----------------------+-----------------------|
      | 12.2XQ     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XR     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XS     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XT     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XU     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XV     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2XW     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2YA     | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      | 12.2YB     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2YC     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2YD     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2YE     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YF     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YG     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YH     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YJ     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 12.2YK     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YL     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 12.2YM     | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YN     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 12.2YO     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2YP     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YQ     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YR     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YS     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YT     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YU     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YV     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YW     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YX     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YY     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2YZ     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2ZA     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SXF               |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2ZB     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 12.2ZC     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2ZD     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2ZE     | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      | 12.2ZF     | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      | 12.2ZG     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.2ZH     | Not vulnerable        | Vulnerable; First     |
      |            |                       | fixed in Release 12.4 |
      |------------+-----------------------+-----------------------|
      | 12.2ZJ     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2ZL     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 12.2ZP     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.2ZU     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.2SXH               |
      |------------+-----------------------+-----------------------|
      | 12.2ZX     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2ZY     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.2ZYA    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |  Affected  |                       |  First Fixed Release  |
      | 12.3-Based |  First Fixed Release  | for All Advisories in |
      |  Releases  |                       |  the September 2011   |
      |            |                       |  Bundled Publication  |
      |------------------------------------------------------------|
      | There are no affected 12.3 based releases                  |
      |------------------------------------------------------------|
      |  Affected  |                       |  First Fixed Release  |
      | 12.4-Based |  First Fixed Release  | for All Advisories in |
      |  Releases  |                       |  the September 2011   |
      |            |                       |  Bundled Publication  |
      |------------+-----------------------+-----------------------|
      | 12.4       | Not vulnerable        | 12.4(25f)             |
      |------------+-----------------------+-----------------------|
      | 12.4GC     | 12.4(24)GC4           | 12.4(24)GC4           |
      |------------+-----------------------+-----------------------|
      | 12.4JA     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4JAX    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4JDA    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4JDC    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4JHA    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4JHB    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4JHC    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4JK     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4JL     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4JMA    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4JMB    | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; migrate   |
      |            |                       | to any release in     |
      |            |                       | 12.4JA                |
      | 12.4JX     | Not vulnerable        |                       |
      |            |                       | Releases up to and    |
      |            |                       | including 12.4(21a)JX |
      |            |                       | are not vulnerable.   |
      |------------+-----------------------+-----------------------|
      | 12.4JY     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      | 12.4MD     | Not vulnerable        | 12.4(24)MD6 on        |
      |            |                       | 28-Oct-2011           |
      |------------+-----------------------+-----------------------|
      | 12.4MDA    | Not vulnerable        | 12.4(24)MDA7          |
      |------------+-----------------------+-----------------------|
      | 12.4MDB    | Not vulnerable        | 12.4(24)MDB3          |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            | Releases up to and    | organization per the  |
      | 12.4MR     | including 12.4(6)MR1  | instructions in the   |
      |            | are not vulnerable.   | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; contact   | Vulnerable; contact   |
      |            | your support          | your support          |
      |            | organization per the  | organization per the  |
      | 12.4MRA    | instructions in       | instructions in the   |
      |            | Obtaining Fixed       | Obtaining Fixed       |
      |            | Software section of   | Software section of   |
      |            | this advisory.        | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; First     | Vulnerable; First     |
      | 12.4MRB    | fixed in Release      | fixed in Release      |
      |            | 12.4T                 | 12.4T                 |
      |------------+-----------------------+-----------------------|
      | 12.4SW     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            | 12.4(24)T6            | 12.4(24)T6            |
      | 12.4T      |                       |                       |
      |            | 12.4(15)T16           | 12.4(15)T16           |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.4XA     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.4T                 |
      |------------+-----------------------+-----------------------|
      | 12.4XB     | Not vulnerable        | 12.4(2)XB12           |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; First     |                       |
      | 12.4XC     | Fixed in Release      | Not vulnerable        |
      |            | 12.4T                 |                       |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.4XD     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.4T                 |
      |------------+-----------------------+-----------------------|
      |            | Not vulnerable        |                       |
      |            |                       |                       |
      | 12.4XE     | Vulnerable; First     | Not vulnerable        |
      |            | Fixed in Release      |                       |
      |            | 12.4T                 |                       |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.4XF     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.4T                 |
      |------------+-----------------------+-----------------------|
      |            | Releases up to and    |                       |
      |            | including 12.4(9)XG1  |                       |
      |            | are not vulnerable.   |                       |
      |            |                       | Vulnerable; First     |
      | 12.4XG     | Releases 12.4(9)XG3   | fixed in Release      |
      |            | and later are not     | 12.4T                 |
      |            | vulnerable. First     |                       |
      |            | fixed in Release      |                       |
      |            | 12.4T                 |                       |
      |------------+-----------------------+-----------------------|
      |            | Not vulnerable        |                       |
      |            |                       |                       |
      | 12.4XJ     | Vulnerable; First     | Not vulnerable        |
      |            | Fixed in Release      |                       |
      |            | 12.4T                 |                       |
      |------------+-----------------------+-----------------------|
      | 12.4XK     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; contact   | Vulnerable; contact   |
      |            | your support          | your support          |
      |            | organization per the  | organization per the  |
      | 12.4XL     | instructions in the   | instructions in the   |
      |            | Obtaining Fixed       | Obtaining Fixed       |
      |            | Software section of   | Software section of   |
      |            | this advisory.        | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            | Releases up to and    |                       |
      |            | including 12.4(15)XM  |                       |
      |            | are not vulnerable.   |                       |
      |            |                       | Vulnerable; First     |
      | 12.4XM     | Releases 12.4(15)XM3  | fixed in Release      |
      |            | and later are not     | 12.4T                 |
      |            | vulnerable. First     |                       |
      |            | fixed in Release      |                       |
      |            | 12.4T                 |                       |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.4XN     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.4XP     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.4XQ     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.4T                 |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.4XR     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.4T                 |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 12.4XT     | Not vulnerable        | fixed in Release      |
      |            |                       | 12.4T                 |
      |------------+-----------------------+-----------------------|
      | 12.4XV     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; First     | Vulnerable; First     |
      | 12.4XW     | fixed in Release      | fixed in Release      |
      |            | 12.4T                 | 12.4T                 |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; First     | Vulnerable; First     |
      | 12.4XY     | fixed in Release      | fixed in Release      |
      |            | 12.4T                 | 12.4T                 |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; First     | Vulnerable; First     |
      | 12.4XZ     | fixed in Release      | fixed in Release      |
      |            | 12.4T                 | 12.4T                 |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; First     | Vulnerable; First     |
      | 12.4YA     | fixed in Release      | fixed in Release      |
      |            | 12.4T                 | 12.4T                 |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; contact   | Vulnerable; contact   |
      |            | your support          | your support          |
      |            | organization per the  | organization per the  |
      | 12.4YB     | instructions in       | instructions in the   |
      |            | Obtaining Fixed       | Obtaining Fixed       |
      |            | Software section of   | Software section of   |
      |            | this advisory.        | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.4YD     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; fixed in  |
      |            |                       | 12.4(22)YE6 on        |
      | 12.4YE     | Not vulnerable        | 30-Sept-2011; 12.4    |
      |            |                       | (24)YE7 available on  |
      |            |                       | 17-Oct-2011           |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 12.4YG     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |  Affected  |                       |  First Fixed Release  |
      | 15.0-Based |  First Fixed Release  | for All Advisories in |
      |  Releases  |                       |  the September 2011   |
      |            |                       |  Bundled Publication  |
      |------------+-----------------------+-----------------------|
      | 15.0M      | 15.0(1)M7             | 15.0(1)M7             |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 15.0MR     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 15.0MRA    | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            | Not vulnerable        | 15.0(1)S4             |
      |            |                       |                       |
      | 15.0S      | Cisco IOS XE devices: | Cisco IOS XE devices: |
      |            | See Cisco IOS-XE      | See Cisco IOS-XE      |
      |            | Software Availability | Software Availability |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 15.0SA     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      | 15.0SE     | Not vulnerable        | Not vulnerable        |
      |------------+-----------------------+-----------------------|
      |            | Cisco IOS XE devices: | Cisco IOS XE devices: |
      | 15.0SG     | See Cisco IOS-XE      | See Cisco IOS-XE      |
      |            | Software Availability | Software Availability |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; First     | Vulnerable; First     |
      | 15.0XA     | fixed in Release      | fixed in Release      |
      |            | 15.1T                 | 15.1T                 |
      |------------+-----------------------+-----------------------|
      |            | Cisco IOS XE devices: | Cisco IOS XE devices: |
      | 15.0XO     | See Cisco IOS-XE      | See Cisco IOS-XE      |
      |            | Software Availability | Software Availability |
      |------------+-----------------------+-----------------------|
      |  Affected  |                       |  First Fixed Release  |
      | 15.1-Based |  First Fixed Release  | for All Advisories in |
      |  Releases  |                       |  the September 2011   |
      |            |                       |  Bundled Publication  |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 15.1EY     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            | Vulnerable; First     | Vulnerable; First     |
      | 15.1GC     | fixed in Release      | fixed in Release      |
      |            | 15.1T                 | 15.1T                 |
      |------------+-----------------------+-----------------------|
      | 15.1M      | 15.1(4)M1             | 15.1(4)M2; Available  |
      |            |                       | on 30-SEP-11          |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; contact   |
      |            |                       | your support          |
      |            |                       | organization per the  |
      | 15.1MR     | Not vulnerable        | instructions in the   |
      |            |                       | Obtaining Fixed       |
      |            |                       | Software section of   |
      |            |                       | this advisory.        |
      |------------+-----------------------+-----------------------|
      |            |                       | 15.1(2)S2             |
      |            | Not vulnerable        |                       |
      |            |                       | 15.1(3)S              |
      | 15.1S      | Cisco IOS XE devices: |                       |
      |            | See Cisco IOS-XE      | Cisco IOS XE devices: |
      |            | Software Availability | See Cisco IOS-XE      |
      |            |                       | Software Availability |
      |------------+-----------------------+-----------------------|
      |            | 15.1(2)T4             | 15.1(2)T4 15.1(1)T4   |
      | 15.1T      |                       | on 8-Dec-2011         |
      |            | 15.1(3)T2             |                       |
      |------------+-----------------------+-----------------------|
      |            |                       | Vulnerable; First     |
      | 15.1XB     | 15.1(4)XB5            | fixed in Release      |
      |            |                       | 15.1T                 |
      |------------+-----------------------+-----------------------|
      |  Affected  |                       |  First Fixed Release  |
      | 15.2-Based |  First Fixed Release  | for All Advisories in |
      |  Releases  |                       |  the September 2011   |
      |            |                       |  Bundled Publication  |
      |------------------------------------------------------------|
      | There are no affected 15.2 based releases                  |
      +------------------------------------------------------------+
      
      Cisco IOS XE Software
      +--------------------
      
      +------------------------------------------------------------+
      |  Cisco   |   First    |    First Fixed Release for All     |
      |  IOS XE  |   Fixed    |  Advisories in the September 2011  |
      | Release  |  Release   |        Bundled Publication         |
      |----------+------------+------------------------------------|
      | 2.1.x    | Not        | Vulnerable; migrate to 3.3.2S or   |
      |          | Vulnerable | later                              |
      |----------+------------+------------------------------------|
      | 2.2.x    | Not        | Vulnerable; migrate to 3.3.2S or   |
      |          | Vulnerable | later                              |
      |----------+------------+------------------------------------|
      | 2.3.x    | Not        | Vulnerable; migrate to 3.3.2S or   |
      |          | Vulnerable | later                              |
      |----------+------------+------------------------------------|
      | 2.4.x    | Not        | Vulnerable; migrate to 3.3.2S or   |
      |          | Vulnerable | later                              |
      |----------+------------+------------------------------------|
      | 2.5.x    | 3.1.3S     | Vulnerable; migrate to 3.3.2S or   |
      |          |            | later                              |
      |----------+------------+------------------------------------|
      | 2.6.x    | 3.1.3S     | Vulnerable; migrate to 3.3.2S or   |
      |          |            | later                              |
      |----------+------------+------------------------------------|
      | 3.1.xS   | 3.1.3S     | Vulnerable; migrate to 3.3.2S or   |
      |          |            | later                              |
      |----------+------------+------------------------------------|
      | 3.1.xSG  | Not        | Vulnerable; migrate to 3.2.0SG or  |
      |          | vulnerable | later                              |
      |----------+------------+------------------------------------|
      | 3.2.xS   | 3.2.1S     | Vulnerable; migrate to 3.3.2S or   |
      |          |            | later                              |
      |----------+------------+------------------------------------|
      | 3.2.xSG  | Not        | Not vulnerable                     |
      |          | vulnerable |                                    |
      |----------+------------+------------------------------------|
      | 3.3.xS   | Not        | 3.3.2S                             |
      |          | Vulnerable |                                    |
      |----------+------------+------------------------------------|
      | 3.4.xS   | Not        | Not Vulnerable                     |
      |          | Vulnerable |                                    |
      +------------------------------------------------------------+
      
      For mapping of Cisco IOS XE to Cisco IOS releases, please refer to
      the Cisco IOS XE 2 Release Notes, Cisco IOS XE 3S Release Notes, and
      Cisco IOS XE 3SG Release Notes.
      
      Cisco IOS XR System Software
      +---------------------------
      
      Cisco IOS XR Software is not affected by any of the vulnerabilities
      in the September 2011 bundled publication.
      
      Workarounds
      ===========
      
      If the affected Cisco IOS device requires SIP for VoIP services, SIP
      cannot be disabled and no workarounds are available. Users are
      advised to apply mitigation techniques to help limit exposure to the
      vulnerabilities. Mitigation consists of allowing only legitimate
      devices to connect to affected devices. To increase effectiveness,
      the mitigation must be coupled with measures against spoofing on the
      network edge. This action is required because SIP can use UDP as the
      transport protocol.
      
      Additional mitigations that can be deployed on Cisco
      devices within the network are available in the companion
      document "Cisco Applied Mitigation Bulletin:Identifying and
      Mitigating Exploitation of the Multiple Vulnerabilities
      in Cisco Voice Products" at the following location:
      http://www.cisco.com/warp/public/707/cisco-amb-20110928-voice.shtml.
      
      Disabling SIP Listening Ports
      +----------------------------
      
      For devices that do not require SIP to be enabled, the simplest and
      most effective workaround is to disable SIP processing on the device.
      Some versions of Cisco IOS Software allow administrators to disable
      SIP with the following commands:
      
          sip-ua
           no transport udp
           no transport tcp
           no transport tcp tls
      
      Warning: When applying this workaround to devices that are processing
      Media Gateway Control Protocol (MGCP) or H.323 calls, the device will
      not stop SIP processing while active calls are being processed. Under
      these circumstances, this workaround should be implemented during a
      maintenance window when active calls can be briefly stopped.
      
      The "show udp connections", "show tcp brief all", and "show processes |
      include SIP" commands can be used to confirm that the SIP UDP and TCP
      ports are closed after applying this workaround.
      
      Depending on the Cisco IOS Software version in use, when SIP is
      disabled, the output from the "show ip sockets" command may still show
      the SIP ports open, but sending traffic to them will cause the SIP
      process to display the following message:
      
          *Jun 2 11:36:47.691: sip_udp_sock_process_read: SIP UDP Listener is DISABLED
      
      Control Plane Policing
      +---------------------
      
      For devices that need to offer SIP services, it is possible to use
      Control Plane Policing (CoPP) to block SIP traffic to the device from
      untrusted sources. Cisco IOS Releases 12.0S, 12.2SX, 12.2S, 12.3T,
      12.4, and 12.4T support the CoPP feature. CoPP may be configured on a
      device to protect the management and control planes to minimize the
      risk and effectiveness of direct infrastructure attacks by explicitly
      permitting only authorized traffic sent to infrastructure devices in
      accordance with existing security policies and configurations. The
      following example can be adapted to specific network configurations:
      
          !-- The 192.168.1.0/24 network and the 172.16.1.1 host are trusted.
          !-- Everything else is not trusted. The following access list is used
          !-- to determine what traffic needs to be dropped by a control plane
          !-- policy (the CoPP feature): if the access list matches (permit)
          !-- then traffic will be dropped and if the access list does not
          !-- match (deny) then traffic will be processed by the router.
          access-list 100 deny udp 192.168.1.0 0.0.0.255 any eq 5060
          access-list 100 deny tcp 192.168.1.0 0.0.0.255 any eq 5060
          access-list 100 deny tcp 192.168.1.0 0.0.0.255 any eq 5061
          access-list 100 deny udp host 172.16.1.1 any eq 5060
          access-list 100 deny tcp host 172.16.1.1 any eq 5060
          access-list 100 deny tcp host 172.16.1.1 any eq 5061
          access-list 100 permit udp any any eq 5060
          access-list 100 permit tcp any any eq 5060
          access-list 100 permit tcp any any eq 5061
      
          !-- Permit (Police or Drop)/Deny (Allow) all other Layer3 and Layer4
          !-- traffic in accordance with existing security policies and
          !-- configurations for traffic that is authorized to be sent
          !-- to infrastructure devices.
          !-- Create a Class-Map for traffic to be policed by
          !-- the CoPP feature.
          class-map match-all drop-sip-class
            match access-group 100
      
          !-- Create a Policy-Map that will be applied to the
          !-- Control-Plane of the device.
          policy-map control-plane-policy
           class drop-sip-class
            drop
      
          !-- Apply the Policy-Map to the Control-Plane of the
          !-- device.
          control-plane
           service-policy input control-plane-policy
      
      Note: Because SIP can use UDP as a transport protocol, it is possible
      to spoof the source address of an IP packet, which may bypass access
      control lists that permit communication to these ports from trusted
      IP addresses.
      
      In the preceding CoPP example, the access control entries (ACEs) that
      match the potential exploit packets with the permit action cause these
      packets to be discarded by the policy-map drop function, whereas
      packets that match the deny action (not shown) are not affected by the
      policy-map drop function. Additional information on the configuration
      and use of the CoPP feature can be found at
      http://www.cisco.com/web/about/security/intelligence/coppwp_gs.html and
      http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtrtlimt.html.
      
      Obtaining Fixed Software
      ========================
      
      Cisco has released free software updates that address these
      vulnerabilities. Prior to deploying software, customers should
      consult their maintenance provider or check the software for feature
      set compatibility and known issues specific to their environment.
      
      Customers may only install and expect support for the feature
      sets they have purchased. By installing, downloading, accessing
      or otherwise using such software upgrades, customers agree to be
      bound by the terms of Cisco's software license terms found at
      http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html,
      or as otherwise set forth at Cisco.com Downloads at
      http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
      
      Do not contact psirt at cisco dot com or security-alert at cisco dot com for
      software upgrades.
      
      Customers with Service Contracts
      +-------------------------------
      
      Customers with contracts should obtain upgraded software through
      their regular update channels. For most customers, this means that
      upgrades should be obtained through the Software Center on Cisco's
      worldwide website at http://www.cisco.com.
      
      Customers using Third Party Support Organizations
      +------------------------------------------------
      
      Customers whose Cisco products are provided or maintained through
      prior or existing agreements with third-party support organizations,
      such as Cisco Partners, authorized resellers, or service providers
      should contact that support organization for guidance and assistance
      with the appropriate course of action in regards to this advisory.
      
      The effectiveness of any workaround or fix is dependent on specific
      customer situations, such as product mix, network topology, traffic
      behavior, and organizational mission. Due to the variety of affected
      products and releases, customers should consult with their service
      provider or support organization to ensure any applied workaround or
      fix is the most appropriate for use in the intended network before it
      is deployed.
      
      Customers without Service Contracts
      +----------------------------------
      
      Customers who purchase direct from Cisco but do not hold a Cisco
      service contract, and customers who purchase through third-party
      vendors but are unsuccessful in obtaining fixed software through
      their point of sale should acquire upgrades by contacting the Cisco
      Technical Assistance Center (TAC). TAC contacts are as follows.
      
        * +1 800 553 2447 (toll free from within North America)
        * +1 408 526 7209 (toll call from anywhere in the world)
        * e-mail: tac at cisco dot com
      
      Customers should have their product serial number available and be
      prepared to give the URL of this notice as evidence of entitlement to
      a free upgrade. Free upgrades for non-contract customers must be
      requested through the TAC.
      
      Refer to
      http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html
      for additional TAC contact information, including localized telephone
      numbers, and instructions and e-mail addresses for use in various
      languages.
      
      Exploitation and Public Announcements
      =====================================
      
      The Cisco PSIRT is not aware of any public announcements or malicious
      use of the vulnerabilities described in this advisory.
      
      These vulnerabilities were discovered by Cisco during internal
      testing.
      
      Status of this Notice: FINAL
      ============================
      
      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.
      
      A stand-alone copy or Paraphrase of the text of this document that
      omits the distribution URL in the following section is an
      uncontrolled copy, and may lack important information or contain
      factual errors.
      
      Distribution
      ============
      
      This advisory is posted on Cisco's worldwide website at:
      
      http://www.cisco.com/warp/public/707/cisco-sa-20110928-sip.shtml
      
      In addition to worldwide web posting, a text version of this notice
      is clear-signed with the Cisco PSIRT PGP key and is posted to the
      following e-mail and Usenet news recipients.
      
        * cust-security-announce at cisco dot com
        * first-bulletins at lists dot first dot org
        * bugtraq at securityfocus dot com
        * vulnwatch at vulnwatch dot org
        * cisco at spot dot colorado dot edu
        * cisco-nsp at puck dot nether dot net
        * full-disclosure at lists.grok dot org dot uk
        * comp.dcom.sys.cisco at newsgate dot cisco dot com
      
      Future updates of this advisory, if any, will be placed on Cisco's
      worldwide website, but may or may not be actively announced on
      mailing lists or newsgroups. Users concerned about this problem are
      encouraged to check the above URL for any updates.
      
      Revision History
      ================
      
      +------------------------------------------------------------+
      | Revision 1.0 | 2011-September-28 | Initial public release. |
      +------------------------------------------------------------+
      
      Cisco Security Procedures
      =========================
      
      Complete information on reporting security vulnerabilities
      in Cisco products, obtaining assistance with security
      incidents, and registering to receive security information
      from Cisco, is available on Cisco's worldwide website at
      http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html.
      This includes instructions for press inquiries regarding
      Cisco security notices. All Cisco security advisories are available at
      http://www.cisco.com/go/psirt.
      
      +--------------------------------------------------------------------
      Copyright 2010-2011 Cisco Systems, Inc. All rights reserved.
      +--------------------------------------------------------------------
      
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