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Advisory ID: cisco-sa-20120328-msdp

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-msdp

Revision 1.0

For Public Release 2012 March 28 16:00  UTC (GMT)

Summary

A vulnerability in the Multicast Source Discovery Protocol (MSDP) implementation of Cisco IOS Software and Cisco IOS XE Software could allow a remote, unauthenticated attacker to cause a reload of an affected device. Repeated attempts to exploit this vulnerability could result in a sustained denial of service (DoS) condition.
 
Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are available. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-msdp

Note: The March 28, 2012, Cisco IOS Software Security Advisory bundled publication includes nine Cisco Security Advisories. Each advisory lists the Cisco IOS Software releases that correct the vulnerability or vulnerabilities detailed in the advisory as well as the Cisco IOS Software releases that correct all vulnerabilities in the March 2012 bundled publication.

Individual publication links are in "Cisco Event Response: Semi-Annual Cisco IOS Software Security Advisory Bundled Publication" at the following link:

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar12.html


Affected Products

Vulnerable Products

The following products are affected by this vulnerability:
  • Cisco IOS Software
  • Cisco IOS XE Software
To determine whether a Cisco IOS or Cisco IOS XE Software release is running on a Cisco product, administrators can log in to the device and issue the show version command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the show version command or may provide different output.

The following example identifies a Cisco product that is running Cisco IOS Software Release 12.4(20)T with an installed image name of C1841-ADVENTERPRISEK9-M:
Router#show version

Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Thu 10-Jul-08 20:25 by prod_rel_team
Additional information about Cisco IOS Software release naming conventions is available in the White Paper: Cisco IOS and NX-OS Software Reference Guide

Products Confirmed 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

MSDP is the protocol used to connect multiple Protocol Independent Multicast sparse mode (PIM-SM) domains. MSDP allows multicast sources for a group to be known to all rendezvous points (RPs) in different domains.  An RP runs MSDP over TCP to discover multicast sources.

An RP in a PIM-SM domain has an MSDP peering relationship with MSDP-enabled routers in another domain. The peering relationship occurs over a TCP connection, where primarily a list of sources sending to multicast groups is exchanged. The TCP connections between RPs are achieved by the underlying routing system. The receiving RP uses the source lists to establish a source path.

The purpose of this topology is to have domains discover multicast sources in other domains. If the multicast sources are of interest to a domain that has receivers, multicast data is delivered over the normal, source-tree building mechanism in PIM-SM.

An MSDP packet containing encapsulated Internet Group Management Protocol (IGMP) data, received from an external MSDP-configured peer router, can cause an affected device to reload. This vulnerability can only be exploited if the router is explicitly joined to the multicast group. The MSDP packet destination address is a unicast address and can be addressed to any IP address on the affected device, including loopback addresses.

Transit traffic will not trigger this vulnerability.

A vulnerable interface configuration contains an explicitly joined multicast group. Some example configurations that permit exploitation of this vulnerability are:


!--- Interface configured for SAP Listener Support (a common multicast group)

interface GigabitEthernet0/0
ip address 192.168.0.1 255.255.255.0
ip pim sparse-mode
ip sap listen

!--- Interface configured to join a multicast group

interface GigabitEthernet0/0
ip address 192.168.0.1 255.255.255.0
ip pim sparse-mode
ip igmp join-group 224.2.127.254

You can also use the show igmp interface command to determine if an interface is joined to a multicast group.

RouterA#show ip igmp interface 
GigabitEthernet0/0 is up, line protocol is up
  Internet address is 192.168.0.1/24
  IGMP is enabled on interface
  Current IGMP host version is 2
  Current IGMP router version is 2
  IGMP query interval is 60 seconds
  IGMP querier timeout is 120 seconds
  IGMP max query response time is 10 seconds
  Last member query count is 2
  Last member query response interval is 1000 ms
  Inbound IGMP access group is not set
  IGMP activity: 2 joins, 0 leaves
  Multicast routing is disabled on interface
  Multicast TTL threshold is 0
  Multicast groups joined by this system (number of users):
      224.2.127.254(2)  239.255.255.255(1)

This vulnerability is documented in Cisco bug ID CSCtr28857 (registered customers only). This vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-0382.

Vulnerability Scoring Details

Cisco has scored the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this security advisory is in accordance with CVSS version 2.0.

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

Cisco has provided a base and temporal score. Customers can also compute environmental scores that help determine the impact of the vulnerability in their own networks.

Cisco has provided additional information regarding CVSS at the following link:

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

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

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



CSCtr28857 MSDP-peered Router joined to a multicast group may crash

Calculate the environmental score of CSCtr28857

CVSS Base Score - 7.1

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Medium

None

None

None

Complete

CVSS Temporal Score - 5.9

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

Impact

Successful exploitation of this vulnerability may cause the affected device to reload. Repeated exploitation may result in a sustained DoS condition.

Software Versions and Fixes

When considering software upgrades, customers are advised to consult the Cisco Security Advisories and Responses archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution.

In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

Cisco IOS Software

Each row of the following Cisco IOS Software table corresponds to a Cisco IOS Software train. If a particular train is vulnerable, the earliest releases that contain the fix are listed in the First Fixed Release column. The First Fixed Release for All Advisories in the March 2012 Bundled Publication column lists the earliest possible releases that correct all the published vulnerabilities in the Cisco IOS Software Security Advisory bundled publication. Cisco recommends upgrading to the latest available release, where possible.

The Cisco IOS Software Checker allows customers to search for Cisco Security Advisories that address specific Cisco IOS Software releases. This tool is available on the Cisco Security Intelligence Operations (SIO) portal at http://tools.cisco.com/security/center/selectIOSVersion.x



Major Release      Availability of Repaired Releases
Affected 12.0-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
12.0S 12.0(33)S10
 12.0(33)S10
12.0SY 12.0(32)SY15
 12.0(32)SY15
12.0SZ Vulnerable; First fixed in Release 12.0S
 Vulnerable; First fixed in Release 12.0S
Affected 12.2-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
12.2 Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2B Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2BC Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2BW Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2BX Vulnerable; First fixed in Release 12.2SB
 Vulnerable; First fixed in Release 12.2SB
12.2BY Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2BZ Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2CX Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2CY Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2CZ Vulnerable; First fixed in Release 12.0S
 Vulnerable; First fixed in Release 12.0S
12.2DA Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2DD Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2DX Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2EU Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2EW Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2EWA Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2EX Vulnerable; First fixed in Release 15.0SE
 Vulnerable; First fixed in Release 15.0SE
12.2EY 12.2(52)EY4
12.2(58)EY2
 12.2(52)EY4
12.2EZ Releases prior to 12.2(53)EZ are vulnerable; Releases 12.2(53)EZ and later are not vulnerable. First fixed in Release 15.0SE
 Vulnerable; First fixed in Release 15.0SE
12.2FX Not vulnerable
 Vulnerable; First fixed in Release 15.0SE
12.2FY Not vulnerable
 Vulnerable; First fixed in Release 15.0SE
12.2FZ Vulnerable; First fixed in Release 12.2SE
 Vulnerable; First fixed in Release 15.0SE
12.2IRA Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2IRB Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2IRC Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2IRD Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2IRE Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2IRF Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2IRG Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IRH 12.2(33)IRH1
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXA Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXB Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXC Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXD Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXE Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXF Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXG Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2IXH Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2JA Not vulnerable
 Not vulnerable
12.2JK Not vulnerable
 Not vulnerable
12.2MB Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2MC Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2MRA Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2MRB Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2S Releases prior to 12.2(30)S are vulnerable; Releases 12.2(30)S and later are not vulnerable. First fixed in Release 12.0S
 Releases prior to 12.2(30)S are vulnerable; Releases 12.2(30)S and later are not vulnerable. First fixed in Release 12.0S
12.2SB 12.2(33)SB12
 12.2(33)SB12
12.2SBC Vulnerable; First fixed in Release 12.2SB
 Vulnerable; First fixed in Release 12.2SRE
12.2SCA Vulnerable; First fixed in Release 12.2SCE
 Vulnerable; First fixed in Release 12.2SCE
12.2SCB Vulnerable; First fixed in Release 12.2SCE
 Vulnerable; First fixed in Release 12.2SCE
12.2SCC Vulnerable; First fixed in Release 12.2SCE
 Vulnerable; First fixed in Release 12.2SCE
12.2SCD Vulnerable; First fixed in Release 12.2SCE
 Vulnerable; First fixed in Release 12.2SCE
12.2SCE 12.2(33)SCE5
 12.2(33)SCE6
12.2SCF 12.2(33)SCF2
 12.2(33)SCF2
12.2SE 12.2(55)SE5
12.2(55)SE5 *
12.2SEA Vulnerable; First fixed in Release 12.2SE
 Vulnerable; First fixed in Release 15.0SE
12.2SEB Vulnerable; First fixed in Release 12.2SE
 Vulnerable; First fixed in Release 15.0SE
12.2SEC Vulnerable; First fixed in Release 12.2SE
 Vulnerable; First fixed in Release 15.0SE
12.2SED Vulnerable; First fixed in Release 12.2SE
 Vulnerable; First fixed in Release 15.0SE
12.2SEE Vulnerable; First fixed in Release 12.2SE
 Vulnerable; First fixed in Release 15.0SE
12.2SEF Not vulnerable
 Vulnerable; First fixed in Release 15.0SE
12.2SEG Releases prior to 12.2(25)SEG4 are vulnerable; Releases 12.2(25)SEG4 and later are not vulnerable. First fixed in Release 15.0SE
 Vulnerable; First fixed in Release 15.0SE
12.2SG 12.2(53)SG7; Available on 07-MAY-12
 12.2(53)SG7; Available on 07-MAY-12
12.2SGA Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SL Not vulnerable
 Not vulnerable
12.2SM Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SO Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SQ Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SRA Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2SRB Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2SRC Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2SRD Vulnerable; First fixed in Release 12.2SRE
 Vulnerable; First fixed in Release 12.2SRE
12.2SRE 12.2(33)SRE5
 12.2(33)SRE6
12.2STE Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SU Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2SV Releases up to and including 12.2(18)SV2 are not vulnerable.
 Releases up to and including 12.2(18)SV2 are not vulnerable.
12.2SVA Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SVC Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SVD Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SVE Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SW Vulnerable; First fixed in Release 12.4SW
 Vulnerable; First fixed in Release 12.4T
12.2SX Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXA Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXB Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXD Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXE Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXF Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXH Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2SXI 12.2(33)SXI9
 12.2(33)SXI9
12.2SXJ 12.2(33)SXJ2
 12.2(33)SXJ2
12.2SY 12.2(50)SY2; Available on 11-JUN-12
 12.2(50)SY2; Available on 11-JUN-12
12.2SZ Vulnerable; First fixed in Release 12.0S
 Vulnerable; First fixed in Release 12.0S
12.2T Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2TPC Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2XA Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XB Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XC Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XD Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XE Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XF Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XG Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XH Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XI Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XJ Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XK Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XL Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XM Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XNA Please see Cisco IOS-XE Software Availability
 Please see Cisco IOS-XE Software Availability
12.2XNB Please see Cisco IOS-XE Software Availability
 Please see Cisco IOS-XE Software Availability
12.2XNC Please see Cisco IOS-XE Software Availability
 Please see Cisco IOS-XE Software Availability
12.2XND Please see Cisco IOS-XE Software Availability
 Please see Cisco IOS-XE Software Availability
12.2XNE Please see Cisco IOS-XE Software Availability
 Please see Cisco IOS-XE Software Availability
12.2XNF Please see Cisco IOS-XE Software Availability
 Please see Cisco IOS-XE Software Availability
12.2XO Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2XQ Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XR Releases prior to 12.2(15)XR are vulnerable; Releases 12.2(15)XR and later are not vulnerable. First fixed in Release 12.4
 Releases prior to 12.2(15)XR are vulnerable; Releases 12.2(15)XR and later are not vulnerable. First fixed in Release 15.0M
12.2XS Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XT Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XU Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XV Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2XW Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2YA Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2YC Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YD Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YE Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YK Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YO Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YP Vulnerable; First fixed in Release 12.4
Releases up to and including 12.2(8)YP are not vulnerable.
 Vulnerable; First fixed in Release 15.0M
Releases up to and including 12.2(8)YP are not vulnerable.
12.2YT Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YW Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YX Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YY Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2YZ Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZA Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZB Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZC Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZD Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZE Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2ZH Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.2ZJ Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZP Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZU Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZX Vulnerable; First fixed in Release 12.2SB
 Vulnerable; First fixed in Release 12.2SRE
12.2ZY Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.2ZYA Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
Affected 12.3-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
12.3 Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3B Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3BC Vulnerable; First fixed in Release 12.2SCE
 Vulnerable; First fixed in Release 12.2SCE
12.3BW Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3JA Releases prior to 12.3(4)JA2 are vulnerable; Releases 12.3(4)JA2 and later are not vulnerable. Migrate to any release in 12.4JA
 Vulnerable; First fixed in Release 12.4JA
12.3JEA Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.3JEB Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.3JEC Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.3JED Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.3JK Releases up to and including 12.3(2)JK3 are not vulnerable.
Releases 12.3(8)JK1 and later are not vulnerable. First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3JL Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.3JX Not vulnerable
 Not vulnerable
12.3T Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3TPC Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.3VA Not vulnerable
 Not vulnerable
12.3XA Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3XB Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.3XC Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3XD Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3XE Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3XF Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.3XG Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3XI Vulnerable; First fixed in Release 12.2SB
 Vulnerable; First fixed in Release 12.2SRE
12.3XJ Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3XK Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3XL Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3XQ Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3XR Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3XU Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 12.4T
12.3XW Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3XX Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3XY Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3XZ Vulnerable; First fixed in Release 12.4
 Vulnerable; First fixed in Release 15.0M
12.3YD Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YF Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YG Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YI Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YJ Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YK Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YM Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YQ Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YS Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YT Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YU Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YX Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.3YZ Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.3ZA Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
Affected 12.4-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
12.4 12.4(25g); Available on 19-SEP-12
 Vulnerable; First fixed in Release 15.0M
12.4GC Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4JA Not vulnerable
 12.4(23c)JA4
12.4(25e)JA
12.4JAX Not vulnerable
 Vulnerable; First fixed in Release 12.4JA
12.4JDA Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4JDC Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4JDD Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4JDE Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4JHA Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4JHB Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4JHC Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4JK Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4JL Not vulnerable
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4JX Not vulnerable
 Vulnerable; First fixed in Release 12.4JA
12.4JY Not vulnerable
 Vulnerable; First fixed in Release 12.4JA
12.4JZ Not vulnerable
 Vulnerable; First fixed in Release 12.4JA
12.4MD 12.4(24)MD7; Available on 29-Jun-12
 12.4(22)MD3; Available on 30-MAR-12
12.4MDA 12.4(24)MDA11
 12.4(24)MDA11
12.4MDB 12.4(24)MDB5a
 12.4(24)MDB5a
12.4MDC Not vulnerable
 Not vulnerable
12.4MR Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4MRA Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4MRB Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4SW 12.4(15)SW8a
 Vulnerable; First fixed in Release 15.0M
12.4T 12.4(15)T17
12.4(24)T7

 12.4(15)T17
12.4(24)T7
12.4XA Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XB Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 12.4T
12.4XC Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XD Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XE Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XF Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XG Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XJ Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XK Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XL Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4XM Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XN Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4XP Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4XQ Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XR Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 12.4T
12.4XT Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XV Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4XW Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XY Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4XZ Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4YA Vulnerable; First fixed in Release 12.4T
 Vulnerable; First fixed in Release 15.0M
12.4YB Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4YD Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
12.4YE 12.4(24)YE3d
 12.4(24)YE3d
12.4YG 12.4(24)YG4
 12.4(24)YG4
Affected 15.0-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
15.0M 15.0(1)M8
 15.0(1)M8
15.0MR Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
15.0MRA Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
15.0S 15.0(1)S5
Cisco IOS XE devices: Please see Cisco IOS XE Software Availability 		15.0(1)S5
Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.0SA Not vulnerable
 Not vulnerable
15.0SE 15.0(1)SE1
15.0(2)SE; Available on 06-AUG-12
 15.0(1)SE1
15.0SG 15.0(2)SG2
Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability 		15.0(2)SG2
Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
15.0SY Not vulnerable
 15.0(1)SY1
15.0XA Vulnerable; First fixed in Release 15.1T
 Vulnerable; First fixed in Release 15.1T
15.0XO Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
 Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
Affected 15.1-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
15.1EY 15.1(2)EY1a
 15.1(2)EY2
15.1GC 15.1(2)GC2
 15.1(2)GC2
15.1M 15.1(4)M2
15.1(4)M3a
 15.1(4)M4; Available on 30-MAR-12
15.1MR 15.1(1)MR3
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
15.1S 15.1(3)S1
Cisco IOS XE devices: Please see Cisco IOS XE Software Availability 		15.1(3)S2
Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.1SG Not vulnerable
Cisco IOS XE devices: Please see Cisco IOS XE Software Availability 		Not vulnerable
Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.1SNG Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
 Vulnerable; contact your support organization per the instructions in Obtaining Fixed Software section of this advisory.
15.1SNH Not vulnerable
 Not vulnerable
15.1T 15.1(1)T5; Available on 18-MAY-12
15.1(2)T5; Available on 27-APR-12
15.1(3)T3
 15.1(3)T3
15.1XB Vulnerable; First fixed in Release 15.1T
 Vulnerable; First fixed in Release 15.1T
Affected 15.2-Based Releases First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
15.2GC 15.2(1)GC1
 15.2(1)GC2
15.2S Not vulnerable
Cisco IOS XE devices: Please see Cisco IOS XE Software Availability 		15.2(1)S1
Cisco IOS XE devices: Please see Cisco IOS XE Software Availability
15.2T 15.2(1)T1
15.2(2)T
15.2(2)T1
 15.2(1)T2
15.2(2)T1
15.2(3)T; Available on 30-MAR-12

* Cisco Catalyst 3550 Series Switches support the Internet Key Exchange (IKE) feature and are vulnerable to Cisco bug ID CSCts38429 when the devices are running Layer 3 images; however, this product reached the End of Software Maintenance milestone.  Cisco 3550 Series SMI Switches that are running Layer 2 images do not support IKE and are not vulnerable.  No other Cisco devices that run 12.2SE-based software are vulnerable.

Cisco IOS XE Software

Cisco IOS XE Software is affected by the vulnerability that is disclosed in this document.
Cisco IOS XE Software Release First Fixed Release First Fixed Release for All Advisories in the March 2012 Cisco IOS Software Security Advisory Bundled Publication
2.1.x Vulnerable; migrate to 3.4.1S or later. Vulnerable; migrate to 3.4.2S or later.
2.2.x Vulnerable; migrate to 3.4.1S or later. Vulnerable; migrate to 3.4.2S or later.
2.3.x Vulnerable; migrate to 3.4.1S or later. Vulnerable; migrate to 3.4.2S or later.
2.4.x Vulnerable; migrate to 3.4.1S or later. Vulnerable; migrate to 3.4.2S or later.
2.5.x Vulnerable; migrate to 3.4.1S or later. Vulnerable; migrate to 3.4.2S or later.
2.6.x Vulnerable; migrate to 3.4.1S or later. Vulnerable; migrate to 3.4.2S or later.
3.1.xS Vulnerable; migrate to 3.4.1S or later. Vulnerable; migrate to 3.4.2S or later.
3.1.xSG Vulnerable; migrate to 3.2.2SG or later. Vulnerable; migrate to 3.2.2SG or later.
3.2.xS Vulnerable; migrate to 3.4.1S or later. Vulnerable; migrate to 3.4.2S or later.
3.2.xSG 3.2.2SG 3.2.2SG
3.3.xS Vulnerable; migrate to 3.4.1S or later. Vulnerable; migrate to 3.4.2S or later.
3.3.xSG Not Vulnerable Not Vulnerable
3.4.xS 3.4.1S 3.4.2S
3.5.xS Not vulnerable 3.5.1S
3.6.xS Not vulnerable Not vulnerable

For a mapping of Cisco IOS XE Software releases to Cisco IOS Software releases, refer to Cisco IOS XE 2 Release Notes, Cisco IOS XE 3S Release Notes, and Cisco IOS XE 3SG Release Notes.

Cisco IOS XR Software

Cisco IOS XR Software is not affected by any of the vulnerabilities disclosed in the March 2012 Cisco IOS Software Security Advisory Bundled Publication.

Workarounds

Customers with an MSDP-configured router who do not require membership to multicast groups can remove the ip sap listen or ip igmp join-group <multicast-group address> commands on the router interface as a workaround.

For example:

  RouterA#conf t
    RouterA(config)# interface GigabitEthernet0/0
    RouterA(config-if)# no ip sap listen
    RouterA(config-if)# no ip igmp join-group 224.2.127.254


  interface GigabitEthernet0/0
  ip address 192.168.0.1 255.255.255.0
  ip pim sparse-mode

To determine if a router is configured for MSDP peers, run the command show ip msdp peer at the router command prompt:

RouterA# show ip msdp peer
MSDP Peer 192.168.0.2 (?), AS 100
  Connection status:
    State: Up, Resets: 0, Connection source: none configured
    Uptime(Downtime): 01:23:42, Messages sent/received: 25/24
    Output messages discarded: 0
    Connection and counters cleared 01:15:14 ago
  SA Filtering:
    Input (S,G) filter: none, route-map: none
    Input RP filter: none, route-map: none
    Output (S,G) filter: none, route-map: none
    Output RP filter: none, route-map: none
  SA-Requests:
    Input filter: none
  Peer ttl threshold: 0
  SAs learned from this peer: 0
    Input queue size: 0, Output queue size: 0
  Message counters:
    RPF Failure count: 0
    SA Messages in/out: 13/8
    SA Requests in: 0
    SA Responses out: 0    
    Data Packets in/out: 7/8
To remove an untrusted MSDP peer from your configuration, use the no ip msdp peer <address> or ip msdp default-peer <ip-address | name> command on the router configuration interface.

RouterA(config)# no ip msdp peer 192.168.0.2 
interface GigabitEthernet0/0
 ip address 192.168.0.1 255.255.255.0
 ip pim sparse-mode

Obtaining Fixed Software

Cisco has released free software updates that address the vulnerability|vulnerabilities described in this advisory. Prior to deploying software, customers are advised to consult their maintenance providers or check the software for feature set compatibility and known issues that are specific to their environments.

Customers may only install and expect support for feature sets they have purchased. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as set forth 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, upgrades should be obtained through the Software Center on Cisco.com at http://www.cisco.com.

Customers using Third Party Support Organizations

Customers with Cisco products that 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 organization for assistance with the appropriate course of action.

The effectiveness of any workaround or fix depends on specific customer situations, such as product mix, network topology, traffic behavior, and organizational mission. Because of the variety of affected products and releases, customers should consult their service providers or support organizations to ensure that any applied workaround or fix is the most appropriate in the intended network before it is deployed.

Customers without Service Contracts

Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco Technical Assistance Center (TAC):

  • +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 the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. Customers without service contracts should request free upgrades through the TAC.

Refer to Cisco Worldwide Contacts at http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, instructions, and e-mail addresses for support in various languages.

Exploitation and Public Announcements

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

This vulnerability was found during the troubleshooting of customer service requests.

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 Security Intelligence Operations at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-msdp

Additionally, a text version of this advisory is clear signed with the Cisco PSIRT PGP key and circulated among the following e-mail addresses:

  • 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

Future updates of this advisory, if any, will reside on Cisco.com but may not be announced on mailing lists. Users can monitor this advisory's URL for any updates.


Revision History

Revision 1.0 2012-March-28 Initial public release

Cisco Security Procedures

Complete information about reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco is available on Cisco.com at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. This web page includes instructions for press inquiries regarding Cisco Security Advisories. All Cisco Security Advisories are available at http://www.cisco.com/go/psirt.