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Cisco Security Advisory: Multiple Multicast Vulnerabilities in Cisco IOS Software
From: Cisco Systems Product Security Incident Response Team <psirt () cisco com>
Date: Wed, 24 Sep 2008 17:50:00 +0200

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Cisco Security Advisory: Multiple Multicast Vulnerabilities in Cisco
IOS Software

Advisory ID: cisco-sa-20080924-multicast

http://www.cisco.com/warp/public/707/cisco-sa-20080924-multicast.shtml

Revision 1.0

For Public Release 2008 September 24 1600 UTC (GMT)

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

Summary
=======

Two crafted Protocol Independent Multicast (PIM) packet
vulnerabilities exist in Cisco IOS software that may lead to a denial
of service (DoS) condition. Cisco has released free software updates
that address these vulnerabilities. Workarounds that mitigate these
vulnerabilities are available.

This advisory is posted at 
http://www.cisco.com/warp/public/707/cisco-sa-20080924-multicast.shtml

Note: The September 24, 2008 IOS Advisory bundled publication
includes twelve Security Advisories. Eleven of the advisories address
vulnerabilities in Cisco's IOS software, and one advisory addresses
vulnerabilities in Cisco Unified Communications Manager. Each
Advisory lists the releases that correct the vulnerability described
in the Advisory. Please reference the following software table to
find a release that fixes all published IOS software Advisories as of
September 24th, 2008:

http://www.cisco.com/warp/public/707/cisco-sa-20080924-bundle.shtml

Individual publication links are listed below:

  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-iosips.shtml
  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-ssl.shtml
  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-sip.shtml
  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-cucm.shtml
  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-vpn.shtml
  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-mfi.shtml
  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-ipc.shtml
  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-ubr.shtml
  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-sccp.shtml
  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-iosfw.shtml
  * http://www.cisco.com/warp/public/707/cisco-sa-20080924-l2tp.shtml

Affected Products
=================

Vulnerable Products
+------------------

Devices that are running Cisco IOS Software and configured for PIM
have a vulnerability related to a specially crafted PIM packet. In
addition, Cisco 12000 Series (GSR) routers running Cisco IOS Software
have a second vulnerability related to a crafted PIM packet.

The show running-config | include ip pim command can be issued to
verify that a Cisco IOS device is configured for PIM. In the
following example, the Cisco IOS router is configured for PIM
sparse-dense mode.

    Router#show running-config | include ip pim
     ip pim sparse-dense-mode

Note that available PIM modes on a Cisco IOS device are dense mode,
sparse mode, or sparse-dense mode. A device that is configured for
any of these modes is affected by these vulnerabilities. The mode
determines how the device populates its multicast routing table and
how multicast packets are forwarded. PIM must be enabled in one of
these modes for an interface to perform IP multicast routing. More
information on the configuration of each mode is in the "Details"
section.

Additionally, To display information about interfaces configured for
Protocol Independent Multicast (PIM), use the show ip pim interface
command in user EXEC or privileged EXEC mode, as shown in the
following example:

    Router# show ip pim interface

    Address          Interface                Ver/   Nbr    Query  DR     DR
                                              Mode   Count  Intvl  Prior

    10.1.0.1         GigabitEthernet0/0       v2/SD  0      30     1      10.1.0.1
    10.6.0.1         GigabitEthernet0/1       v2/SD  1      30     1      10.6.0.2

In order to determine the software that runs on a Cisco IOS product,
log in to the device and issue the show version command to display
the system banner. Cisco IOS software identifies itself as
"Internetwork Operating System Software" or simply "IOS." On the next
line of output, the image name displays between parentheses, followed
by "Version" and the Cisco IOS release name. Other Cisco devices do
not have the show version command or give different output.

The following example shows output from a device that runs an IOS
image:

    router>show version
    Cisco IOS Software, 7200 Software (C7200-ADVSECURITYK9-M), Version 12.4(6)T2, RELEASE SOFTWARE (fc1)
    Technical Support: http://www.cisco.com/techsupport
    Copyright (c) 1986-2006 by Cisco Systems, Inc.
    Compiled Tue 16-May-06 16:09 by kellythw
    <more output removed for brevity>

Products Confirmed Not Vulnerable
+--------------------------------

Cisco IOS devices that are not configured for PIM are not vulnerable.
Cisco IOS XR Software is not affected by this vulnerability. No other
Cisco products are currently known to be affected by this
vulnerability.

Details
=======

Two crafted Protocol Independent Multicast (PIM) packet
vulnerabilities exist in Cisco IOS Software that may lead to a denial
of service (DoS) condition. Devices that run Cisco IOS Software and
are configured for PIM are affected by the first vulnerability. Only
Cisco 12000 Series (GSR) routers that are configured for PIM are
affected by the second vulnerability.

Available PIM modes on a Cisco IOS device are dense mode, sparse
mode, or sparse-dense mode. The mode determines how the device
populates its multicast routing table and how multicast packets are
forwarded. PIM must be enabled in one of these modes for an interface
to perform IP multicast routing.

Note: There is no default mode setting. By default, multicast routing
is disabled on an interface.

To configure PIM on an interface to be in dense mode, use the
following command in interface configuration mode:

    Router(config-if)# ip pim dense-mode

To configure PIM on an interface to be in sparse mode, use the
following command in interface configuration mode:

    Router(config-if)# ip pim sparse-mode

To configure PIM on an interface to be in sparse-dense mode, use the
following command in interface configuration mode:

    Router(config-if)# ip pim sparse-dense-mode

These vulnerabilities are documented in the following Cisco Bug IDs:

  * CSCsd95616 - Crafted PIM packets may cause an IOS device to
    reload
  * CSCsl34355 - GSR may crash with malformed PIM packets

These vulnerabilities have been assigned the Common Vulnerabilities
and Exposures (CVE) identifiers CVE-2008-3808 and CVE-2008-3809.

Vulnerability Scoring Details
=============================

Cisco has provided scores for the vulnerabilities in this advisory
based on the Common Vulnerability Scoring System (CVSS). The CVSS
scoring in this Security Advisory is done in accordance with CVSS
version 2.0.

CVSS is a standards-based scoring method that conveys vulnerability
severity and helps determine urgency and priority of response.

Cisco has provided a base and temporal score. Customers can then
compute environmental scores to assist in determining the impact of
the vulnerability in individual networks.

Cisco has provided an FAQ to answer additional questions regarding
CVSS at

http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html

Cisco has also provided a CVSS calculator to help compute the
environmental impact for individual networks at

http://intellishield.cisco.com/security/alertmanager/cvss


CSCsd95616 - Crafted PIM packets may cause an IOS device to reload

CVSS Base Score - 7.8

        Access Vector          - Network
        Access Complexity      - Low
        Authentication         - None
        Confidentiality Impact - None
        Integrity Impact       - None
        Availability Impact    - Complete

CVSS Temporal Score - 6.4

        Exploitability          - Functional
        Remediation Level       - Official-Fix
        Report Confidence       - Confirmed


CSCsl34355 - GSR may crash with malformed PIM packets

CVSS Base Score - 7.8

        Access Vector          - Network
        Access Complexity      - Low
        Authentication         - None
        Confidentiality Impact - None
        Integrity Impact       - None
        Availability Impact    - Complete

CVSS Temporal Score - 6.4

        Exploitability          - Functional
        Remediation Level       - Official-Fix
        Report Confidence       - Confirmed


Impact
======

Successful exploitation may cause a reload of the affected device.
Repeated exploitation could result in a sustained denial of service
(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 Cisco IOS software table (below) names a Cisco IOS
release train. If a given release train is vulnerable, then the
earliest possible releases that contain the fix (along with the
anticipated date of availability for each, if applicable) are listed
in the "First Fixed Release" column of the table. The "Recommended
Release" column indicates the releases which have fixes for all the
published vulnerabilities at the time of this Advisory. A device
running a release in the given train that is earlier than the release
in a specific column (less than the First Fixed Release) is known to
be vulnerable. Cisco recommends upgrading to a release equal to or
later than the release in the "Recommended Releases" column of the
table.

+-------------------------------------------------------------------+
|   Major    |             Availability of Repaired Releases        |
|  Release   |                                                      |
|------------+------------------------------------------------------|
|  Affected  |                                       | Recommended  |
| 12.0-Based |          First Fixed Release          |   Release    |
|  Releases  |                                       |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0       | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            | Releases prior to 12.0(8)DA3 are      | 12.2(12)DA13 |
|            | vulnerable, release 12.0(8)DA3 and    |              |
| 12.0DA     | later are not vulnerable; first fixed | 12.4(15)T7   |
|            | in 12.2DA                             |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0DB     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0DC     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            | 12.0(32)S8                            | 12.0(32)S11  |
| 12.0S      |                                       |              |
|            | 12.0(33)S                             | 12.0(33)S1   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.0(32)S11  |
| 12.0SC     | Vulnerable; first fixed in 12.0S      |              |
|            |                                       | 12.0(33)S1   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0SL     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0SP     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.0(32)S11  |
| 12.0ST     | Vulnerable; first fixed in 12.0S      |              |
|            |                                       | 12.0(33)S1   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.0(32)S11  |
| 12.0SX     | Vulnerable; first fixed in 12.0S      |              |
|            |                                       | 12.0(33)S1   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.0(32)SY7; |
| 12.0SY     | 12.0(32)SY5                           | Available on |
|            |                                       | 29-SEP-08    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.0(32)S11  |
| 12.0SZ     | 12.0(30)SZ4                           |              |
|            |                                       | 12.0(33)S1   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0T      | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.0W      | Vulnerable; first fixed in 12.2       | 12.0(3c)W5   |
|            |                                       | (8)          |
|------------+---------------------------------------+--------------|
|            | Releases prior to 12.0(5)WC10 are     | 12.4(15)T7   |
| 12.0WC     | vulnerable, release 12.0(5)WC10 and   |              |
|            | later are not vulnerable; first fixed | 12.4(18c)    |
|            | in 12.2                               |              |
|------------+---------------------------------------+--------------|
| 12.0WT     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XA     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XB     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            | Releases prior to 12.0(2)XC2 are      | 12.4(15)T7   |
| 12.0XC     | vulnerable, release 12.0(2)XC2 and    |              |
|            | later are not vulnerable; first fixed | 12.4(18c)    |
|            | in 12.2                               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XD     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XE     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.0XF     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XG     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XH     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            | Releases prior to 12.0(4)XI2 are      | 12.4(15)T7   |
| 12.0XI     | vulnerable, release 12.0(4)XI2 and    |              |
|            | later are not vulnerable; first fixed | 12.4(18c)    |
|            | in 12.2                               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XJ     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XK     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XL     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XM     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XN     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XQ     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XR     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.0XS     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XT     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.0XV     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|  Affected  |                                       | Recommended  |
| 12.1-Based |          First Fixed Release          |   Release    |
|  Releases  |                                       |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1       | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1AA     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.1AX     | Vulnerable; first fixed in 12.2EY     | 12.2(46)SE   |
|------------+---------------------------------------+--------------|
|            | Releases prior to 12.1(22)AY1 are     | 12.1(22)EA12 |
| 12.1AY     | vulnerable, release 12.1(22)AY1 and   |              |
|            | later are not vulnerable; first fixed | 12.2(46)SE   |
|            | in 12.1EA                             |              |
|------------+---------------------------------------+--------------|
| 12.1AZ     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1CX     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(12)DA13 |
|            |                                       |              |
| 12.1DA     | Vulnerable; first fixed in 12.2DA     | 12.4(15)T7   |
|            |                                       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1DB     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1DC     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.1E      | 12.1(27b)E2                           | 12.2(18)     |
|            |                                       | SXF15        |
|------------+---------------------------------------+--------------|
| 12.1EA     | 12.1(22)EA10                          | 12.1(22)EA12 |
|------------+---------------------------------------+--------------|
| 12.1EB     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SCA1 |
| 12.1EC     | Vulnerable; first fixed in 12.3BC     |              |
|            |                                       | 12.3(23)BC4  |
|------------+---------------------------------------+--------------|
| 12.1EO     | Vulnerable; first fixed in 12.2SV     |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(25)     |
|            |                                       | EWA14        |
| 12.1EU     | Vulnerable; first fixed in 12.2EWA    |              |
|            |                                       | 12.2(31)SGA8 |
|            |                                       |              |
|            |                                       | 12.2(46)SG1  |
|------------+---------------------------------------+--------------|
| 12.1EV     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(25)     |
|            |                                       | EWA14        |
|            |                                       |              |
|            |                                       | 12.2(31)SGA8 |
| 12.1EW     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.2(46)SG1  |
|            |                                       |              |
|            |                                       | 12.4(15)T7   |
|            |                                       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1EX     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.1EY     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(18)     |
|            |                                       | SXF15        |
| 12.1EZ     | Vulnerable; first fixed in 12.1E      |              |
|            |                                       | 12.4(15)T7   |
|            |                                       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1GA     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1GB     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1T      | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XA     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XB     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XC     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XD     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XE     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XF     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XG     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XH     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XI     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XJ     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XL     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XM     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XP     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XQ     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XR     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XS     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XT     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XU     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XV     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XW     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XX     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XY     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1XZ     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1YA     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1YB     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1YC     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1YD     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            | Releases prior to 12.1(5)YE6 are      | 12.4(15)T7   |
| 12.1YE     | vulnerable, release 12.1(5)YE6 and    |              |
|            | later are not vulnerable; first fixed | 12.4(18c)    |
|            | in 12.2                               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1YF     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.1YH     | Vulnerable; first fixed in 12.2       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.1YI     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.1YJ     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|  Affected  |                                       | Recommended  |
| 12.2-Based |          First Fixed Release          |   Release    |
|  Releases  |                                       |              |
|------------+---------------------------------------+--------------|
|            | 12.2(26c)                             |              |
|            |                                       |              |
|            | 12.2(27c)                             |              |
|            |                                       | 12.4(15)T7   |
| 12.2       | 12.2(28d)                             |              |
|            |                                       | 12.4(18c)    |
|            | 12.2(29b)                             |              |
|            |                                       |              |
|            | 12.2(46)                              |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2B      | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SCA1 |
|            |                                       |              |
|            |                                       | 12.3(23)BC4  |
| 12.2BC     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(15)T7   |
|            |                                       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2BW     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SB2; |
|            |                                       | Available on |
|            |                                       | 26-SEP-08    |
| 12.2BX     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(15)T7   |
|            |                                       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2BY     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2BZ     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SCA1 |
|            |                                       |              |
|            |                                       | 12.3(23)BC4  |
| 12.2CX     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(15)T7   |
|            |                                       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SCA1 |
|            |                                       |              |
|            |                                       | 12.3(23)BC4  |
| 12.2CY     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(15)T7   |
|            |                                       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SB2; |
| 12.2CZ     | Vulnerable; first fixed in 12.2S      | Available on |
|            |                                       | 26-SEP-08    |
|------------+---------------------------------------+--------------|
|            | 12.2(10)DA9                           |              |
| 12.2DA     |                                       | 12.2(12)DA13 |
|            | 12.2(12)DA13                          |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2DD     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2DX     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(25)     |
|            |                                       | EWA14        |
| 12.2EW     | Vulnerable; first fixed in 12.2EWA    |              |
|            |                                       | 12.2(31)SGA8 |
|            |                                       |              |
|            |                                       | 12.2(46)SG1  |
|------------+---------------------------------------+--------------|
|            | 12.2(25)EWA10                         | 12.2(25)     |
| 12.2EWA    |                                       | EWA14        |
|            | 12.2(25)EWA11                         |              |
|------------+---------------------------------------+--------------|
| 12.2EX     | 12.2(37)EX                            | 12.2(35)EX2  |
|------------+---------------------------------------+--------------|
| 12.2EY     | 12.2(37)EY                            |              |
|------------+---------------------------------------+--------------|
| 12.2EZ     | Vulnerable; first fixed in 12.2SEE    | 12.2(46)SE   |
|------------+---------------------------------------+--------------|
| 12.2FX     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2FY     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2FZ     | Vulnerable; first fixed in 12.2SE     | 12.2(46)SE   |
|------------+---------------------------------------+--------------|
| 12.2IRB    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2IXA    | Vulnerable; migrate to any release in | 12.2(18)IXG  |
|            | 12.2IXE                               |              |
|------------+---------------------------------------+--------------|
| 12.2IXB    | Vulnerable; migrate to any release in | 12.2(18)IXG  |
|            | 12.2IXE                               |              |
|------------+---------------------------------------+--------------|
| 12.2IXC    | Vulnerable; migrate to any release in | 12.2(18)IXG  |
|            | 12.2IXE                               |              |
|------------+---------------------------------------+--------------|
| 12.2IXD    | Vulnerable; migrate to any release in | 12.2(18)IXG  |
|            | 12.2IXE                               |              |
|------------+---------------------------------------+--------------|
| 12.2IXE    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2IXF    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2IXG    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2JA     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2JK     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(25)SW12 |
|            |                                       |              |
| 12.2MB     | Vulnerable; first fixed in 12.2SW     | 12.4(15)T7   |
|            |                                       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2MC     | 12.2(15)MC2i                          |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            | 12.2(14)S18                           |              |
|            |                                       |              |
|            | 12.2(18)S13                           | 12.2(33)SB2; |
| 12.2S      |                                       | Available on |
|            | 12.2(20)S13                           | 26-SEP-08    |
|            |                                       |              |
|            | 12.2(25)S13                           |              |
|------------+---------------------------------------+--------------|
|            | 12.2(28)SB7                           |              |
|            |                                       | 12.2(33)SB2; |
| 12.2SB     | 12.2(31)SB5                           | Available on |
|            |                                       | 26-SEP-08    |
|            | 12.2(33)SB                            |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SB2; |
| 12.2SBC    | Vulnerable; first fixed in 12.2SB     | Available on |
|            |                                       | 26-SEP-08    |
|------------+---------------------------------------+--------------|
| 12.2SCA    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            | 12.2(35)SE4                           |              |
| 12.2SE     |                                       | 12.2(46)SE   |
|            | 12.2(37)SE                            |              |
|------------+---------------------------------------+--------------|
| 12.2SEA    | Vulnerable; first fixed in 12.2SEE    | 12.2(46)SE   |
|------------+---------------------------------------+--------------|
| 12.2SEB    | Vulnerable; first fixed in 12.2SEE    | 12.2(46)SE   |
|------------+---------------------------------------+--------------|
| 12.2SEC    | Vulnerable; first fixed in 12.2SEE    | 12.2(46)SE   |
|------------+---------------------------------------+--------------|
| 12.2SED    | Vulnerable; first fixed in 12.2SEE    | 12.2(46)SE   |
|------------+---------------------------------------+--------------|
| 12.2SEE    | 12.2(25)SEE4                          | 12.2(46)SE   |
|------------+---------------------------------------+--------------|
| 12.2SEF    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2SEG    | 12.2(25)SEG3                          | 12.2(25)SEG6 |
|------------+---------------------------------------+--------------|
|            | 12.2(25)SG3                           |              |
|            |                                       |              |
| 12.2SG     | 12.2(31)SG3                           | 12.2(46)SG1  |
|            |                                       |              |
|            | 12.2(37)SG                            |              |
|------------+---------------------------------------+--------------|
| 12.2SGA    | 12.2(31)SGA2                          | 12.2(31)SGA8 |
|------------+---------------------------------------+--------------|
| 12.2SL     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2SM     | 12.2(29)SM3                           | 12.2(29)SM4  |
|------------+---------------------------------------+--------------|
| 12.2SO     | Vulnerable; first fixed in 12.2SV     |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SRB4 |
| 12.2SRA    | 12.2(33)SRA4                          |              |
|            |                                       | 12.2(33)SRC2 |
|------------+---------------------------------------+--------------|
| 12.2SRB    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2SRC    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2SU     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.2SV     | 12.2(29b)SV1                          |              |
|------------+---------------------------------------+--------------|
| 12.2SVA    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2SVC    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2SVD    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2SW     | 12.2(25)SW12                          | 12.2(25)SW12 |
|------------+---------------------------------------+--------------|
| 12.2SX     | Vulnerable; first fixed in 12.2SXF    | 12.2(18)     |
|            |                                       | SXF15        |
|------------+---------------------------------------+--------------|
| 12.2SXA    | Vulnerable; first fixed in 12.2SXF    | 12.2(18)     |
|            |                                       | SXF15        |
|------------+---------------------------------------+--------------|
| 12.2SXB    | Vulnerable; first fixed in 12.2SXF    | 12.2(18)     |
|            |                                       | SXF15        |
|------------+---------------------------------------+--------------|
| 12.2SXD    | Vulnerable; first fixed in 12.2SXF    | 12.2(18)     |
|            |                                       | SXF15        |
|------------+---------------------------------------+--------------|
| 12.2SXE    | Vulnerable; first fixed in 12.2SXF    | 12.2(18)     |
|            |                                       | SXF15        |
|------------+---------------------------------------+--------------|
| 12.2SXF    | 12.2(18)SXF9                          | 12.2(18)     |
|            |                                       | SXF15        |
|------------+---------------------------------------+--------------|
|            | Not Vulnerable                        |              |
| 12.2SXH    |                                       |              |
|            | http://www.cisco.com/go/pn            |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SB2; |
| 12.2SY     | Vulnerable; first fixed in 12.2S      | Available on |
|            |                                       | 26-SEP-08    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SB2; |
| 12.2SZ     | Vulnerable; first fixed in 12.2S      | Available on |
|            |                                       | 26-SEP-08    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2T      | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.2TPC    | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XA     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XB     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XC     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XD     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XE     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SCA1 |
|            |                                       |              |
|            |                                       | 12.3(23)BC4  |
| 12.2XF     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(15)T7   |
|            |                                       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            | Releases prior to 12.2(2)XG1 are      | 12.4(15)T7   |
| 12.2XG     | vulnerable, release 12.2(2)XG1 and    |              |
|            | later are not vulnerable; first fixed | 12.4(18c)    |
|            | in 12.3                               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XH     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XI     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XJ     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XK     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XL     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XM     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SB2; |
|            |                                       | Available on |
|            |                                       | 26-SEP-08    |
| 12.2XN     | 12.2(33)XN1                           |              |
|            |                                       | 12.2(33)SRC2 |
|            |                                       |              |
|            |                                       | 12.2(33)XNA2 |
|------------+---------------------------------------+--------------|
| 12.2XNA    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2XNB    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2XO     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XQ     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            | Releases prior to 12.2(15)XR are      | 12.3(8)JEA3  |
|            | vulnerable, release 12.2(15)XR and    |              |
| 12.2XR     | later are not vulnerable; first fixed | 12.4(15)T7   |
|            | in 12.3                               |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XS     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XT     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XU     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XV     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2XW     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2YA     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.2YB     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YC     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YD     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YE     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YF     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YG     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YH     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YJ     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YK     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YL     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2YM     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.2YN     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YO     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2YP     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.2YQ     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YR     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YS     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2YT     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YU     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YV     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YW     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YX     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YY     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2YZ     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2ZA     | Vulnerable; first fixed in 12.2SXF    | 12.2(18)     |
|            |                                       | SXF15        |
|------------+---------------------------------------+--------------|
| 12.2ZB     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2ZC     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2ZD     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2ZE     | Vulnerable; first fixed in 12.3       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2ZF     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2ZG     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.2ZH     | 12.2(13)ZH9                           |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.2ZJ     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2ZL     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2ZP     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.2ZU     | Vulnerable; migrate to any release in | 12.2(33)SXH3 |
|            | 12.2SXH                               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SB2; |
| 12.2ZX     | Vulnerable; first fixed in 12.2SB     | Available on |
|            |                                       | 26-SEP-08    |
|------------+---------------------------------------+--------------|
| 12.2ZY     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.2ZYA    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|  Affected  |                                       | Recommended  |
| 12.3-Based |          First Fixed Release          |   Release    |
|  Releases  |                                       |              |
|------------+---------------------------------------+--------------|
|            | 12.3(17c)                             |              |
|            |                                       |              |
|            | 12.3(18a)                             |              |
|            |                                       | 12.4(15)T7   |
| 12.3       | 12.3(19a)                             |              |
|            |                                       | 12.4(18c)    |
|            | 12.3(20a)                             |              |
|            |                                       |              |
|            | 12.3(21)                              |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3B      | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            | 12.3(17b)BC6                          |              |
| 12.3BC     |                                       | 12.3(23)BC4  |
|            | 12.3(21)BC                            |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3BW     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.3EU     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.3JA     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.3JEA    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.3JEB    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.3JEC    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.3JK     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.3JL     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.3JX     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3T      | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.3TPC    | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.3VA     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XA     | 12.3(2)XA7                            |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.3XB     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XC     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XD     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XE     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.3XF     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XG     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.2(33)SB2; |
| 12.3XI     | 12.3(7)XI10                           | Available on |
|            |                                       | 26-SEP-08    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.3(14)YX13 |
| 12.3XJ     | Vulnerable; first fixed in 12.3YX     |              |
|            |                                       | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XK     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XL     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XQ     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XR     | 12.3(7)XR7                            |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XS     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.3XU     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.3(14)YX13 |
| 12.3XW     | Vulnerable; first fixed in 12.3YX     |              |
|            |                                       | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XX     | 12.3(8)XX2d                           |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XY     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3XZ     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(15)T7   |
| 12.3YA     | Vulnerable; first fixed in 12.4       |              |
|            |                                       | 12.4(18c)    |
|------------+---------------------------------------+--------------|
| 12.3YD     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.3(14)YX13 |
| 12.3YF     | Vulnerable; first fixed in 12.3YX     |              |
|            |                                       | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.3YG     | 12.3(8)YG6                            | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.3YH     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.3YI     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.3YJ     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.3YK     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.3(14)     |
| 12.3YM     | 12.3(14)YM10                          | YM13;        |
|            |                                       | Available on |
|            |                                       | 30-SEP-08    |
|------------+---------------------------------------+--------------|
| 12.3YQ     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.3YS     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.3YT     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(2)XB10  |
|            |                                       |              |
| 12.3YU     | Vulnerable; first fixed in 12.4XB     | 12.4(9)XG3   |
|            |                                       |              |
|            |                                       | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.3YX     | 12.3(14)YX8                           | 12.3(14)YX13 |
|------------+---------------------------------------+--------------|
| 12.3YZ     | 12.3(11)YZ3                           |              |
|------------+---------------------------------------+--------------|
| 12.3ZA     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
|  Affected  |                                       | Recommended  |
| 12.4-Based |          First Fixed Release          |   Release    |
|  Releases  |                                       |              |
|------------+---------------------------------------+--------------|
|            | 12.4(10c)                             |              |
|            |                                       |              |
|            | 12.4(12)                              |              |
|            |                                       |              |
|            | 12.4(3h)                              |              |
| 12.4       |                                       | 12.4(18c)    |
|            | 12.4(5c)                              |              |
|            |                                       |              |
|            | 12.4(7e)                              |              |
|            |                                       |              |
|            | 12.4(8d)                              |              |
|------------+---------------------------------------+--------------|
| 12.4JA     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4JK     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4JL     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4JMA    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4JMB    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4JMC    | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4JX     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4MD     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4MR     | 12.4(11)MR                            | 12.4(19)MR   |
|------------+---------------------------------------+--------------|
| 12.4SW     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
|            | 12.4(11)T                             |              |
|            |                                       |              |
|            | 12.4(2)T6                             |              |
|            |                                       |              |
| 12.4T      | 12.4(4)T8                             | 12.4(15)T7   |
|            |                                       |              |
|            | 12.4(6)T7                             |              |
|            |                                       |              |
|            | 12.4(9)T3                             |              |
|------------+---------------------------------------+--------------|
| 12.4XA     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.4XB     | 12.4(2)XB6                            | 12.4(2)XB10  |
|------------+---------------------------------------+--------------|
| 12.4XC     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
|            |                                       | 12.4(4)XD11; |
| 12.4XD     | 12.4(4)XD8                            | Available on |
|            |                                       | 26-SEP-08    |
|------------+---------------------------------------+--------------|
| 12.4XE     | Vulnerable; first fixed in 12.4T      | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.4XF     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XG     | 12.4(9)XG2                            | 12.4(9)XG3   |
|------------+---------------------------------------+--------------|
| 12.4XJ     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XK     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XL     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XM     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XN     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XP     | Vulnerable; contact TAC               |              |
|------------+---------------------------------------+--------------|
| 12.4XQ     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XR     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XT     | 12.4(6)XT2                            | 12.4(15)T7   |
|------------+---------------------------------------+--------------|
| 12.4XV     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XW     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XY     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4XZ     | Not Vulnerable                        |              |
|------------+---------------------------------------+--------------|
| 12.4YA     | Not Vulnerable                        |              |
+-------------------------------------------------------------------+

Workarounds
===========

Specifying trusted PIM neighbors is a workaround for both
vulnerabilities. A PIM router must receive PIM Hellos to establish
PIM neighborship. PIM neighborship is also the basis for designated
router (DR) election, DR failover, and accepting/sending PIM Join/
Prune/Assert messages. To specify trusted PIM neighbors, use the ip
pim neighbor-filter command, as shown in the following example:

    Router(config)#access-list 1 permit host 10.10.10.123

    !-- An access control list is created to allow a trusted PIM neighbor
    !-- in this example the neighbor is 10.10.10.123
    !

    Router(config)#interface fastEthernet 0/0
    Router(config-if)#ip pim neighbor-filter 1

    !-- The PIM neighbor filter is then applied to the respective interface(s)


The ip pim neighbor-filter command filters PIM packets from untrusted
devices including Hellos, Join/Prune, and BSR packets.

Note: The vulnerabilities described in this document can be exploited
by spoofed IP packets if the attacker knows the IP address of the
trusted PIM neighbors listed in the ip pim neighbor-filter
implementation.

To protect infrastructure devices and minimize the risk, impact, and
effectiveness of direct infrastructure attacks, administrators are
advised to deploy ACLs to perform policy enforcement of traffic sent
to core infrastructure equipment. PIM is IP protocol 103. As an
additional workaround, administrators can explicitly permit only
authorized PIM (IP protocol 103) traffic sent to infrastructure
devices in accordance with existing security policies and
configurations. An ACL can be deployed as shown in the following
example:

    ip access-list extended Infrastructure-ACL-Policy

     !
     !-- When applicable, include explicit permit statements for trusted
     !-- sources that require access on the vulnerable protocol
     !-- PIM routers need to communicate with the rendezvous point (RP).
     !-- In this example, 192.168.100.1 is the IP address of the 
     !-- rendezvous point, which is a trusted host that requires access 
     !-- to and from the affected PIM devices.
     !

     permit pim host 192.168.100.1 192.168.60.0 0.0.0.255
     permit pim 192.168.60.0 0.0.0.255 host 192.168.100.1

     !
     !-- Permit PIM segment traffic, packets have destination of:
     !-- 224.0.0.13 (PIMv2)
     !-- 224.0.0.2  (Required only by legacy PIMv1)
     !

     permit pim 192.168.60.0 0.0.0.255 host 224.0.0.13
     permit pim 192.168.60.0 0.0.0.255 host 224.0.0.2

     !
     !-- The following vulnerability-specific access control entries
     !-- (ACEs) can aid in identification of attacks
     !

     deny pim any 192.168.60.0 0.0.0.255

     !
     !-- Explicit deny ACE for traffic sent to addresses configured within
     !-- the infrastructure address space
     !

     deny ip any 192.168.60.0 0.0.0.255

     !
     !-- Permit/deny all other Layer 3 and Layer 4 traffic in accordance
     !-- with existing security policies and configurations
     !
     !-- Apply iACL to interfaces in the ingress direction
     !

    interface GigabitEthernet0/0
     ip access-group Infrastructure-ACL-Policy in

Obtaining Fixed Software
========================

Cisco has released free software updates that address these
vulnerabilities. Prior to deploying software, customers should
consult their maintenance provider or check the software for feature
set compatibility and known issues specific to their environment.

Customers may only install and expect support for the feature sets
they have purchased. By installing, downloading, accessing or
otherwise using such software upgrades, customers agree to be bound
by the terms of Cisco's software license terms found at 
http://www.cisco.com/en/US/products/prod_warranties_item09186a008088e31f.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 () cisco com or security-alert () cisco 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 () cisco 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/warp/public/687/Directory/DirTAC.shtml
for additional TAC contact information, including localized telephone
numbers, and instructions and e-mail addresses for use in various
languages.

Exploitation and Public Announcements
=====================================

The Cisco PSIRT is not aware of any public announcements or malicious
use of the vulnerabilities described in this advisory.

These vulnerabilities were found during internal testing.

Status of this Notice: FINAL
============================

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

A stand-alone copy or Paraphrase of the text of this document that
omits the distribution URL in the following section is an
uncontrolled copy, and may lack important information or contain
factual errors.

Distribution
============

This advisory is posted on Cisco's worldwide website at:

http://www.cisco.com/warp/public/707/cisco-sa-20080924-multicast.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 () cisco com
  * first-bulletins () lists first org
  * bugtraq () securityfocus com
  * vulnwatch () vulnwatch org
  * cisco () spot colorado edu
  * cisco-nsp () puck nether net
  * full-disclosure () lists grok org uk
  * comp.dcom.sys.cisco () newsgate cisco 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      | 2008-September-24 | 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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_______________________________________________
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