[apops] Cisco Security Advisory: Cisco IOS Software Internet Group Manag

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  • Subject: [apops] Cisco Security Advisory: Cisco IOS Software Internet Group Management Protocol Denial of Service Vulnerability
  • From: Cisco Systems Product Security Incident Response Team <psirt at cisco dot com>
  • Date: Wed, 22 Sep 2010 18:00:00 +0200
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      Cisco Security Advisory: Cisco IOS Software Internet Group Management
      Protocol Denial of Service Vulnerability
      
      Advisory ID: cisco-sa-20100922-igmp
      
      http://www.cisco.com/warp/public/707/cisco-sa-20100922-igmp.shtml
      
      Revision 1.0
      
      For Public Release 2010 September 22 1600 UTC (GMT)
      
      - ---------------------------------------------------------------------
      
      Summary
      =======
      
      A vulnerability in the Internet Group Management Protocol (IGMP)
      version 3 implementation of Cisco IOS  Software and Cisco IOS XE
      Software allows a remote unauthenticated attacker to cause a reload
      of an affected device. Repeated attempts to exploit this
      vulnerability could result in a sustained denial of service (DoS)
      condition. Cisco has released free software updates that address this
      vulnerability.
      
      This advisory is posted at 
      http://www.cisco.com/warp/public/707/cisco-sa-20100922-igmp.shtml
      
      Note: The September 22, 2010, Cisco IOS Software Security Advisory
      bundled publication includes six Cisco Security Advisories. Five of
      the advisories address vulnerabilities in Cisco IOS Software, and one
      advisory addresses vulnerabilities in Cisco Unified Communications
      Manager. Each advisory lists the releases that correct the
      vulnerability or vulnerabilities detailed in the advisory. The table
      at the following URL lists releases that correct all Cisco IOS
      Software vulnerabilities that have been published on September 22,
      2010, or earlier:
      
      http://www.cisco.com/warp/public/707/cisco-sa-20100922-bundle.shtml
      
      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_sep10.html
      
      Affected Products
      =================
      
      Vulnerable Products
      +------------------
      
      The following products are affected by this vulnerability:
      
        * Cisco IOS Software
        * Cisco IOS XE Software
          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 12.4(20)T with an installed image name
          of C1841-ADVENTERPRISEK9-M:
      
              Router#show version
              Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3)
              Technical Support: http://www.cisco.com/techsupport
              Copyright (c) 1986-2008 by Cisco Systems, Inc.
              Compiled Thu 10-Jul-08 20:25 by prod_rel_team
      
          Additional information about Cisco IOS Software release naming
          conventions is available in White Paper: Cisco IOS and NX-OS
          Software Reference Guide.
      
      Products Confirmed Not Vulnerable
      +--------------------------------
      
      No other Cisco products are currently known to be affected by this
      vulnerability. Cisco IOS XR Software is not affected by this
      vulnerability.
      
      The IGMP version 1, IGMP version 2, and IPv6 Multicast Listener
      Discovery protocol (MLD) features in Cisco IOS and Cisco IOS XE
      Software are not affected by this vulnerability.
      
      Details
      =======
      
      Internet Group Management Protocol (IGMP) is the protocol used by
      hosts and adjacent routers to manage membership in IP multicast
      groups. The IGMP version 3 protocol permits source-specific multicast
      which allows hosts to specify the IP address of the multicast source.
      
      A malformed IGMP packet can cause a vulnerable device to reload. This
      vulnerability can only be exploited if the malformed IGMP packet is
      received on an interface that has been enabled for IGMP version 3 and
      Protocol Independent Multicast (PIM). The malformed IGMP packet
      destination address can be unicast, multicast, or broadcast and can
      be addressed to any IP address in the vulnerable device, including
      loopback addresses.
      
      To exploit this vulnerability, a malformed packet must be received on
      a vulnerable interface, but it can be addressed to any IP address on
      the vulnerable device.
      
      Transit traffic will not trigger this vulnerability.
      
      A vulnerable interface configuration requires the PIM mode of
      operation (sparse-dense, sparse, or dense) to be configured in
      addition to the ip igmp version 3 command. The three possible
      configurations that permit exploitation of this vulnerability are:
      
      
          !--- Interface configured for PIM sparse and IGMPv3
      
      
          interface GigabitEthernet0/0
           ip address 192.168.0.1 255.255.255.0
           ip pim sparse-mode
           ip igmp version 3
      
      
          !--- Interface configured for PIM sparse-dense and IGMPv3
      
      
          interface GigabitEthernet0/1
           ip address 192.168.1.1 255.255.255.0
           ip pim sparse-dense-mode
           ip igmp version 3
      
      
          !--- Interface configured for PIM dense and IGMPv3
      
      
          interface GigabitEthernet0/2
           ip address 192.168.2.1 255.255.255.0
           ip pim dense-mode
           ip igmp version 3
      
      The IGMP version 3 lite feature is unrelated to this vulnerability,
      in that the presence or absence of the ip igmp v3lite command on an
      interface does not change the vulnerable condition of that interface.
      
      The IP router alert option may or may not be present in packets
      attempting to exploit the vulnerability described in this document.
      
      This vulnerability is documented in Cisco bug ID CSCte14603 (
      registered customers only) . This vulnerability has been assigned
      Common Vulnerabilities and Exposures (CVE) ID CVE-2010-2830.
      
      Vulnerability Scoring Details
      =============================
      
      Cisco has provided scores for the vulnerability 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
      
      CSCte14603 - IGMPv3 DoS Vulnerability
      
      CVSS Base Score - 7.1
      Access Vector           Network
      Access Complexity       Medium
      Authentication          None
      Confidentiality Impact  None
      Integrity Impact        None
      Availability Impact     Complete
      
      CVSS Temporal Score - 5.9
      Exploitability          Functional
      Remediation Level       Official Fix
      Report Confidence       Confirmed
      
      Impact
      ======
      
      Successful exploitation of this vulnerability may cause the affected
      device vulnerable device to reload. Repeated exploitation may 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.
      
      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 2010 Bundle 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 for  |
      | 12.0-Based | First Fixed Release for  |   All Advisories in the   |
      |  Releases  |      This Advisory       |   September 2010 Bundle   |
      |            |                          |        Publication        |
      |-------------------------------------------------------------------|
      | There are no affected 12.0 based releases                         |
      |-------------------------------------------------------------------|
      |  Affected  |                          |  First Fixed Release for  |
      | 12.1-Based | First Fixed Release for  |   All Advisories in the   |
      |  Releases  |      This Advisory       |   September 2010 Bundle   |
      |            |                          |        Publication        |
      |-------------------------------------------------------------------|
      | There are no affected 12.1 based releases                         |
      |-------------------------------------------------------------------|
      |  Affected  |                          |  First Fixed Release for  |
      | 12.2-Based | First Fixed Release for  |   All Advisories in the   |
      |  Releases  |      This Advisory       |   September 2010 Bundle   |
      |            |                          |        Publication        |
      |------------+--------------------------+---------------------------|
      | 12.2       | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      | 12.2B      | Not Vulnerable           |                           |
      |            |                          | Releases up to and        |
      |            |                          | including 12.2(2)B7 are   |
      |            |                          | not vulnerable.           |
      |------------+--------------------------+---------------------------|
      | 12.2BC     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2BW     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; first fixed   |
      |            |                          | in 12.2SB                 |
      | 12.2BX     | Not Vulnerable           |                           |
      |            |                          | Releases up to and        |
      |            |                          | including 12.2(15)BX are  |
      |            |                          | not vulnerable.           |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      | 12.2BY     | Not Vulnerable           |                           |
      |            |                          | Releases up to and        |
      |            |                          | including 12.2(2)BY3 are  |
      |            |                          | not vulnerable.           |
      |------------+--------------------------+---------------------------|
      | 12.2BZ     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2CX     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2CY     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2CZ     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.2DA     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2DD     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2DX     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2EW     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2EWA    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2EX     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2EY     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2EZ     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2FX     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2FY     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2FZ     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IRA    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IRB    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IRC    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IRD    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IRE    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IXA    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IXB    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IXC    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IXD    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IXE    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IXF    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IXG    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2IXH    | Not Vulnerable           | the instructions in       |
      |            |                          | 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            |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases up to and        |
      |            |                          | including 12.2(15)MC1 are |
      | 12.2MC     | Not Vulnerable           | not vulnerable. Releases  |
      |            |                          | 12.2(15)MC2b and later    |
      |            |                          | are not vulnerable; first |
      |            |                          | fixed in 12.4T            |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2MRA    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.2MRB    | Not Vulnerable           | 12.2(33)MRB2              |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases prior to 12.2    |
      | 12.2S      | Not Vulnerable           | (30)S are vulnerable,     |
      |            |                          | release 12.2(30)S and     |
      |            |                          | later are not vulnerable  |
      |------------+--------------------------+---------------------------|
      |            |                          | 12.2(31)SB19; Releases    |
      |            |                          | prior to 12.2(33)SB5 are  |
      | 12.2SB     | Not Vulnerable           | vulnerable, release 12.2  |
      |            |                          | (33)SB5 and later are not |
      |            |                          | vulnerable                |
      |------------+--------------------------+---------------------------|
      | 12.2SBC    | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.2SB                 |
      |------------+--------------------------+---------------------------|
      | 12.2SCA    | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.2SCB                |
      |------------+--------------------------+---------------------------|
      | 12.2SCB    | Not Vulnerable           | 12.2(33)SCB9              |
      |------------+--------------------------+---------------------------|
      | 12.2SCC    | Not Vulnerable           | 12.2(33)SCC5              |
      |------------+--------------------------+---------------------------|
      | 12.2SCD    | Not Vulnerable           | 12.2(33)SCD3              |
      |------------+--------------------------+---------------------------|
      | 12.2SE     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SEA    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SEB    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SEC    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SED    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SEE    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SEF    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SEG    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases prior to 12.2    |
      |            |                          | (40)SG are vulnerable,    |
      | 12.2SG     | Not Vulnerable           | release 12.2(40)SG and    |
      |            |                          | later are not vulnerable; |
      |            |                          | migrate to any release in |
      |            |                          | 12.2SGA                   |
      |------------+--------------------------+---------------------------|
      | 12.2SGA    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SL     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SM     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SO     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SQ     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases prior to 12.2    |
      | 12.2SRA    | Not Vulnerable           | (33)SRA6 are vulnerable,  |
      |            |                          | release 12.2(33)SRA6 and  |
      |            |                          | later are not vulnerable  |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases prior to 12.2    |
      | 12.2SRB    | Not Vulnerable           | (33)SRB1 are vulnerable,  |
      |            |                          | release 12.2(33)SRB1 and  |
      |            |                          | later are not vulnerable  |
      |------------+--------------------------+---------------------------|
      | 12.2SRC    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SRD    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SRE    | 12.2(33)SRE1             | 12.2(33)SRE1              |
      |------------+--------------------------+---------------------------|
      | 12.2STE    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SU     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases prior to 12.2    |
      |            |                          | (29b)SV1 are vulnerable,  |
      | 12.2SV     | Not Vulnerable           | release 12.2(29b)SV1 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            |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases up to and        |
      |            |                          | including 12.2(21)SW1 are |
      | 12.2SW     | Not Vulnerable           | not vulnerable. Releases  |
      |            |                          | 12.2(25)SW12 and later    |
      |            |                          | are not vulnerable; first |
      |            |                          | fixed in 12.4T            |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases up to and        |
      | 12.2SX     | Not Vulnerable           | including 12.2(14)SX2 are |
      |            |                          | not vulnerable.           |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2SXA    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2SXB    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2SXD    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2SXE    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases prior to 12.2    |
      |            |                          | (18)SXF11 are vulnerable, |
      | 12.2SXF    | Not Vulnerable           | releases 12.2(18)SXF11    |
      |            |                          | and later are not         |
      |            |                          | vulnerable                |
      |------------+--------------------------+---------------------------|
      | 12.2SXH    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SXI    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2SY     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2SZ     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.2T      | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2TPC    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.2XA     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XB     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XC     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XD     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XE     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2XF     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2XG     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XH     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XI     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XJ     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XK     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XL     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XM     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XN     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.2SB                 |
      |------------+--------------------------+---------------------------|
      | 12.2XNA    | Please see Cisco IOS-XE  | Please see Cisco IOS-XE   |
      |            | Software Availability    | Software Availability     |
      |------------+--------------------------+---------------------------|
      | 12.2XNB    | Please see Cisco IOS-XE  | Please see Cisco IOS-XE   |
      |            | Software Availability    | Software Availability     |
      |------------+--------------------------+---------------------------|
      | 12.2XNC    | Please see Cisco IOS-XE  | Please see Cisco IOS-XE   |
      |            | Software Availability    | Software Availability     |
      |------------+--------------------------+---------------------------|
      | 12.2XND    | Please see Cisco IOS-XE  | Please see Cisco IOS-XE   |
      |            | Software Availability    | Software Availability     |
      |------------+--------------------------+---------------------------|
      | 12.2XNE    | Please see Cisco IOS-XE  | Please see Cisco IOS-XE   |
      |            | Software Availability    | Software Availability     |
      |------------+--------------------------+---------------------------|
      | 12.2XNF    | Please see Cisco IOS-XE  | Please see Cisco IOS-XE   |
      |            | Software Availability    | Software Availability     |
      |------------+--------------------------+---------------------------|
      | 12.2XO     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2XQ     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XR     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2XS     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XT     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XU     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XV     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2XW     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2YA     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YB     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YC     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YD     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YE     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YF     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.2YG     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YH     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YJ     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YK     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YL     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.2YM     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YN     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.2YO     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2YP     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2YQ     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2YR     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2YS     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YT     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YU     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases prior to 12.2    |
      | 12.2YV     | Not Vulnerable           | (11)YV1 are vulnerable,   |
      |            |                          | release 12.2(11)YV1 and   |
      |            |                          | later are not vulnerable  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YW     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YX     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YY     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2YZ     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.2ZA     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases up to and        |
      | 12.2ZB     | Not Vulnerable           | including 12.2(8)ZB are   |
      |            |                          | not vulnerable.           |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2ZC     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2ZD     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.2ZE     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2ZF     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.2ZG     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.2ZH     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2ZJ     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2ZL     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2ZP     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2ZU     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.2ZX     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2ZY     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.2ZYA    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |  Affected  |                          |  First Fixed Release for  |
      | 12.3-Based | First Fixed Release for  |   All Advisories in the   |
      |  Releases  |      This Advisory       |   September 2010 Bundle   |
      |            |                          |        Publication        |
      |------------+--------------------------+---------------------------|
      | 12.3       | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3B      | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3BC     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.3BW     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.3EU     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.3JA     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.3JEA    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.3JEB    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.3JEC    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.3JED    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases up to and        |
      |            |                          | including 12.3(2)JK3 are  |
      | 12.3JK     | Not Vulnerable           | not vulnerable. Releases  |
      |            |                          | 12.3(8)JK1 and later are  |
      |            |                          | not vulnerable; first     |
      |            |                          | fixed in 12.4T            |
      |------------+--------------------------+---------------------------|
      | 12.3JL     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.3JX     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |            | Vulnerable; first fixed  |                           |
      |            | in 12.4                  |                           |
      | 12.3T      |                          | Vulnerable; first fixed   |
      |            | Releases up to and       | in 12.4T                  |
      |            | including 12.3(11)T11    |                           |
      |            | are not vulnerable.      |                           |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.3TPC    | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.3VA     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XA     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.3XB     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.3XC     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XD     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XE     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.3XF     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.3XG     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Releases prior to 12.3(7) |
      |            |                          | XI11 are vulnerable,      |
      | 12.3XI     | Not Vulnerable           | release 12.3(7)XI11 and   |
      |            |                          | later are not vulnerable; |
      |            |                          | first fixed in 12.2SB     |
      |------------+--------------------------+---------------------------|
      | 12.3XJ     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4XR                 |
      |------------+--------------------------+---------------------------|
      | 12.3XK     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XL     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XQ     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XR     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XS     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XU     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XW     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XX     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XY     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3XZ     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YA     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YD     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YF     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4XR                 |
      |------------+--------------------------+---------------------------|
      | 12.3YG     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YH     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YI     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YJ     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YK     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YM     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YQ     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YS     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YT     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YU     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.3YX     | 12.3(14)YX17             | Vulnerable; first fixed   |
      |            |                          | in 12.4XR                 |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.3YZ     | Not Vulnerable           | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.3ZA     | Not Vulnerable           | Vulnerable; first fixed   |
      |            |                          | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |  Affected  |                          |  First Fixed Release for  |
      | 12.4-Based | First Fixed Release for  |   All Advisories in the   |
      |  Releases  |      This Advisory       |   September 2010 Bundle   |
      |            |                          |        Publication        |
      |------------+--------------------------+---------------------------|
      | 12.4       | 12.4(25d)                | 12.4(25d)                 |
      |------------+--------------------------+---------------------------|
      | 12.4GC     | 12.4(24)GC2              | 12.4(24)GC2               |
      |------------+--------------------------+---------------------------|
      | 12.4JA     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.4JDA    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.4JDC    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.4JDD    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.4JHA    | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.4JHB    | 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            |
      |------------+--------------------------+---------------------------|
      | 12.4JX     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.4JY     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      | 12.4MD     | 12.4(24)MD2              | 12.4(24)MD2               |
      |------------+--------------------------+---------------------------|
      |            | 12.4(24)MDA1             |                           |
      | 12.4MDA    |                          | 12.4(22)MDA4              |
      |            | 12.4(22)MDA4             |                           |
      |------------+--------------------------+---------------------------|
      | 12.4MR     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4MRA               | in 12.4MRA                |
      |------------+--------------------------+---------------------------|
      | 12.4MRA    | 12.4(20)MRA1             | 12.4(20)MRA1              |
      |------------+--------------------------+---------------------------|
      |            | Releases prior to 12.4   |                           |
      |            | (15)SW6 are vulnerable,  |                           |
      | 12.4SW     | release 12.4(15)SW6 and  | Vulnerable; first fixed   |
      |            | later are not            | in 12.4T                  |
      |            | vulnerable; first fixed  |                           |
      |            | in 12.4T                 |                           |
      |------------+--------------------------+---------------------------|
      |            | 12.4(24)T3               |                           |
      |            |                          | 12.4(15)T14               |
      |            | 12.4(22)T5               |                           |
      | 12.4T      |                          | 12.4(20)T6                |
      |            | 12.4(20)T5               |                           |
      |            |                          | 12.4(24)T4                |
      |            | 12.4(15)T14              |                           |
      |------------+--------------------------+---------------------------|
      | 12.4XA     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.4XB     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.4XC     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.4XD     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            | Releases prior to 12.4   | Releases prior to 12.4(6) |
      |            | (6)XE5 are vulnerable,   | XE5 are vulnerable,       |
      | 12.4XE     | release 12.4(6)XE5 and   | release 12.4(6)XE5 and    |
      |            | later are not            | later are not vulnerable; |
      |            | vulnerable; first fixed  | first fixed in 12.4T      |
      |            | in 12.4T                 |                           |
      |------------+--------------------------+---------------------------|
      | 12.4XF     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.4XG     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.4XJ     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.4XK     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            | Vulnerable; Contact your | Vulnerable; Contact your  |
      |            | support organization per | support organization per  |
      | 12.4XL     | the instructions in      | the instructions in       |
      |            | Obtaining Fixed Software | Obtaining Fixed Software  |
      |            | section of this advisory | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.4XM     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            | Vulnerable; Contact your | Vulnerable; Contact your  |
      |            | support organization per | support organization per  |
      | 12.4XN     | the instructions in      | the instructions in       |
      |            | Obtaining Fixed Software | Obtaining Fixed Software  |
      |            | section of this advisory | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            | Vulnerable; Contact your | Vulnerable; Contact your  |
      |            | support organization per | support organization per  |
      | 12.4XP     | the instructions in      | the instructions in       |
      |            | Obtaining Fixed Software | Obtaining Fixed Software  |
      |            | section of this advisory | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.4XQ     | 12.4(15)XQ6; Available   | 12.4(15)XQ6; Available on |
      |            | on 22-SEP-10             | 22-SEP-10                 |
      |------------+--------------------------+---------------------------|
      |            | 12.4(15)XR9              | 12.4(15)XR9               |
      | 12.4XR     |                          |                           |
      |            | 12.4(22)XR7              | 12.4(22)XR7               |
      |------------+--------------------------+---------------------------|
      | 12.4XT     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            | Vulnerable; Contact your | Vulnerable; Contact your  |
      |            | support organization per | support organization per  |
      | 12.4XV     | the instructions in      | the instructions in       |
      |            | Obtaining Fixed Software | Obtaining Fixed Software  |
      |            | section of this advisory | section of this advisory  |
      |------------+--------------------------+---------------------------|
      | 12.4XW     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.4XY     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.4XZ     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      | 12.4YA     | Vulnerable; first fixed  | Vulnerable; first fixed   |
      |            | in 12.4T                 | in 12.4T                  |
      |------------+--------------------------+---------------------------|
      |            |                          | Vulnerable; Contact your  |
      |            |                          | support organization per  |
      | 12.4YB     | 12.4(22)YB6              | the instructions in       |
      |            |                          | Obtaining Fixed Software  |
      |            |                          | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            | Vulnerable; Contact your | Vulnerable; Contact your  |
      |            | support organization per | support organization per  |
      | 12.4YD     | the instructions in      | the instructions in       |
      |            | Obtaining Fixed Software | Obtaining Fixed Software  |
      |            | section of this advisory | section of this advisory  |
      |------------+--------------------------+---------------------------|
      |            | 12.4(24)YE1              |                           |
      | 12.4YE     |                          | 12.4(24)YE1               |
      |            | 12.4(22)YE4              |                           |
      |------------+--------------------------+---------------------------|
      | 12.4YG     | 12.4(24)YG3              | 12.4(24)YG3               |
      |------------+--------------------------+---------------------------|
      |  Affected  |                          |  First Fixed Release for  |
      | 15.0-Based | First Fixed Release for  |   All Advisories in the   |
      |  Releases  |      This Advisory       |   September 2010 Bundle   |
      |            |                          |        Publication        |
      |------------+--------------------------+---------------------------|
      | 15.0M      | 15.0(1)M2                | 15.0(1)M3                 |
      |------------+--------------------------+---------------------------|
      |            | Cisco 7600 and 10000     | Cisco 7600 and 10000      |
      |            | Series routers: Not      | Series routers: 15.0(1)S1 |
      |            | vulnerable               | (Available early October  |
      |            |                          | 2010)                     |
      | 15.0S      | Cisco ASR 1000 Series    |                           |
      |            | routes: Please see Cisco | Cisco ASR 1000 Series     |
      |            | IOS-XE Software          | routes: Please see Cisco  |
      |            | Availability             | IOS-XE Software           |
      |            |                          | Availability              |
      |------------+--------------------------+---------------------------|
      | 15.0XA     | Vulnerable; migrate to   | Vulnerable; first fixed   |
      |            | any release in 15.1T     | in 15.1T                  |
      |------------+--------------------------+---------------------------|
      | 15.0XO     | Not Vulnerable           | Not Vulnerable            |
      |------------+--------------------------+---------------------------|
      |  Affected  |                          |  First Fixed Release for  |
      | 15.1-Based | First Fixed Release for  |   All Advisories in the   |
      |  Releases  |      This Advisory       |   September 2010 Bundle   |
      |            |                          |        Publication        |
      |-------------------------------------------------------------------|
      | There are no affected 15.1 based releases                         |
      +-------------------------------------------------------------------+
      
      Cisco IOS XE Software
      +--------------------
      
      +-------------------------------------------------------------------+
      | Cisco IOS |   First Fixed    |    First Fixed Release for All     |
      |    XE     | Release for This |  Advisories in the September 2010  |
      |  Release  |     Advisory     |         Bundle Publication         |
      |-----------+------------------+------------------------------------|
      | 2.1.x     | Not Vulnerable   | Not Vulnerable                     |
      |-----------+------------------+------------------------------------|
      | 2.2.x     | Not Vulnerable   | Not Vulnerable                     |
      |-----------+------------------+------------------------------------|
      | 2.3.x     | Not Vulnerable   | Not Vulnerable                     |
      |-----------+------------------+------------------------------------|
      | 2.4.x     | Not Vulnerable   | Not Vulnerable                     |
      |-----------+------------------+------------------------------------|
      | 2.5.x     | 2.5.2            | Vulnerable; migrate to 2.6.2 or    |
      |           |                  | later                              |
      |-----------+------------------+------------------------------------|
      | 2.6.x     | Not Vulnerable   | 2.6.2                              |
      |-----------+------------------+------------------------------------|
      | 3.1.xS    | Not Vulnerable   | Not Vulnerable                     |
      +-------------------------------------------------------------------+
      
      To map Cisco IOS XE Software releases to Cisco IOS Software releases,
      refer to the Cisco IOS XE 2 and Cisco IOS XE 3S Release Notes.
      
      Cisco IOS XR Software Table
      +--------------------------
      
      Cisco IOS XR Software is not affected by the vulnerabilities
      disclosed in the September 22, 2010, Cisco IOS Software Security
      Advisory bundle publication.
      
      Workarounds
      ===========
      
      Additional mitigations that can be deployed on Cisco devices within
      the network are available in the Cisco Applied Mitigation Bulletin
      companion document for this advisory, which is available at the
      following link: 
      http://www.cisco.com/warp/public/707/cisco-amb-20100922-igmp.shtml
      
      IGMP version 2
      +-------------
      
      Customers who do not require the Source Specific Multicast (SSM)
      functionality can use IGMP version 2 as a workaround.
      
          interface GigabitEthernet0/0
           ip address 192.168.0.1 255.255.255.0
           ip pim sparse-mode
           ip igmp version 2
      
      Control Plane Policing
      +---------------------
      
      A partial mitigation of the vulnerability described in this document
      is to block IGMP packets with an IP Time to Live (TTL) field value
      that is not equal to 1. RFC1054 leavingcisco.com, "Host Extensions
      for IP Multicasting" RFC2236 leavingcisco.com, "Internet Group
      Management Protocol Version 2", and RFC3376 leavingcisco.com,
      "Internet Group Management Protocol Version 3", indicate that every
      IGMP message is sent with an IP TTL of 1.
      
      CoPP may be configured on a device to protect the management and
      control planes, and 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 your network. Drop of IGMP packets with unicast IP
      destination addresses can also be implemented with CoPP if the
      network is using all multicast applications that utilize only
      multicast group destination addresses for IGMP packets.
      
      
          !
          !-- 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. If the access list does not
          !-- match (deny), then traffic will be processed by the router.
          !-- all IGMP packets with ttl different from 1 will be selected 
          !-- by this acl and the "drop" action will be applied in the
          !-- corresponding CoPP polisy
          !
      
          ip access-list extended IGMP-ACL
            permit igmp any any ttl neq 1
      
          !
          !-- 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 that will be policed by
          !-- the CoPP feature.
          !
      
          class-map match-all drop-IGMP-class
            match access-group name IGMP-ACL
      
          !
          !-- Create a policy map that will be applied to the
          !-- Control Plane of the device, and add the "drop-tcp-traffic"
          !-- class map.
          !
      
          policy-map CoPP-policy
           class drop-IGMP-class
            drop
      
          !
          !-- Apply the policy map to the control plane of the
          !-- device.
          !
      
          control-plane
           service-policy input CoPP-policy
      
      Additional information on the configuration and use of the CoPP
      feature is available in the Control Plane Policing Implementation
      Best Practices.
      
      Obtaining Fixed Software
      ========================
      
      Cisco has released free software updates that address this
      vulnerability. 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 vulnerability described in this advisory.
      
      This vulnerability was reported to Cisco by a customer.
      
      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-20100922-igmp.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 |             | Initial      |
      | 1.0      | 2010-Sep-22 | 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
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