var-201110-0250
Vulnerability from variot
Unspecified vulnerability in Cisco IOS 12.2SRE before 12.2(33)SRE4, 15.0, and 15.1, and IOS XE 2.1.x through 3.3.x, when an MPLS domain is configured, allows remote attackers to cause a denial of service (device reload) via an ICMPv6 packet, related to an expired MPLS TTL, aka Bug ID CSCtj30155. The problem is Bug ID CSCtj30155 It is a problem.By a third party ICMPv6 Service disruption via packets ( Reload device ) There is a possibility of being put into a state. Cisco IOS is prone to multiple remote denial-of-service vulnerabilities. An attacker can exploit these issues to cause an affected device to reload, denying service to legitimate users. These issues are being tracked by Cisco Bug IDs: CSCto07919 CSCtj30155. ----------------------------------------------------------------------
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TITLE: Cisco IOS MPLS IPv6 and ICMPv6 Packet Processing Two Denial of Service Vulnerabilities
SECUNIA ADVISORY ID: SA46145
VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/46145/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=46145
RELEASE DATE: 2011-10-31
DISCUSS ADVISORY: http://secunia.com/advisories/46145/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s)
http://secunia.com/advisories/46145/
ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS
https://ca.secunia.com/?page=viewadvisory&vuln_id=46145
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http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/
DESCRIPTION: Two vulnerabilities have been reported in Cisco IOS, which can be exploited by malicious people to cause a DoS (Denial of Service).
Please see the vendor's advisory for a list of affected versions.
SOLUTION: Update to a fixed version (please see the vendor's advisory for details).
PROVIDED AND/OR DISCOVERED BY: Reported by the vendor.
ORIGINAL ADVISORY: http://www.cisco.com/warp/public/707/cisco-sa-20110928-ipv6mpls.shtml
OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/
DEEP LINKS: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/
EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/
EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/
EXPLOIT: Further details available in Customer Area: http://secunia.com/vulnerability_intelligence/
About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities.
Subscribe: http://secunia.com/advisories/secunia_security_advisories/
Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/
Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor.
For more information: SA46145
The vulnerabilities are reported in versions 2.1.x through 2.6.x and 3.2.xS. These vulnerabilities are:
- Crafted IPv6 Packet May Cause MPLS-Configured Device to Reload
- ICMPv6 Packet May Cause MPLS-Configured Device to Reload
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-20110928-ipv6mpls.shtml.
Note: The September 28, 2011, Cisco IOS Software Security Advisory bundled publication includes ten 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 September 2011 Bundled Publication.
Individual publication links are in "Cisco Event Response: Semiannual Cisco IOS Software Security Advisory Bundled Publication" at the following link:
http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep11.html
Affected Products
Vulnerable Products +------------------
Cisco IOS Software or Cisco IOS XE Software devices (hereafter both referenced as Cisco IOS Software in this document) that are running vulnerable versions of Cisco IOS Software and configured for MPLS are affected by two vulnerabilities related to IPv6 traffic that traverses an MPLS domain. The two vulnerabilities are independent of each other.
Note: IPv6 does not need to be configured on the affected devices themselves. The vulnerabilities do require the MPLS label switched packets to have specific IPv6 payloads to be exploited.
To determine whether a device is configured for MPLS, log in to the device and issue the command-line interface (CLI) command "show mpls interface". If the IP state is "Yes", the device is vulnerable. The following example shows a device that has MPLS configured on interface Ethernet0/0:
Router#show mpls interface
Interface IP Tunnel BGP Static Operational
Ethernet0/0 Yes (ldp) No No No Yes
Router#
The following two examples show responses from a device with MPLS forwarding disabled. The first example shows a return of no interfaces:
router#show mpls interface
Interface IP Tunnel BGP Static Operational
routers#
In the second example, the device provides a message indicating that MPLS forwarding is not configured:
router#show mpls interface
no MPLS apps enabled or MPLS not enabled on any interfaces
router#
To determine the Cisco IOS Software release that is running on a Cisco product, administrators can log in to the device and issue the "show version" command to display the system banner. The system banner confirms that the device is running Cisco IOS Software by displaying text similar to "Cisco Internetwork Operating System Software" or "Cisco IOS Software." The image name displays in parentheses, followed by "Version" and the Cisco IOS Software release name. Other Cisco devices do not have the "show version" command or may provide different output.
The following example identifies a Cisco product that is running Cisco IOS Software Release 15.0(1)M1 with an installed image name of C3900-UNIVERSALK9-M:
Router> show version
Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.0(1)M1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Wed 02-Dec-09 17:17 by prod_rel_team
!--- output truncated
Additional information about Cisco IOS Software release naming conventions is available in the white paper Cisco IOS and NX-OS Software Reference Guide at http://www.cisco.com/web/about/security/intelligence/ios-ref.html.
Products Confirmed Not Vulnerable +--------------------------------
Devices that are not configured for MPLS are not vulnerable.
Details
The packet handling nodes in an MPLS network are called provider routers (P routers) and provider edge routers (PE routers) and are configured with MPLS. Both P and PE routers are vulnerable to both the vulnerabilities disclosed in this advisory.
In networks that have MPLS enabled and could carry MPLS label switched packets with IPv6 payloads, the device may crash when processing MPLS label switched packets with specific IPv6 payloads. Typical deployment scenarios that would be affected by either vulnerability would be Cisco IPv6 Provider Edge Router (6PE) or IPv6 VPN Provider Edge Router (6VPE). The crafted packet used to exploit this vulnerability would be silently discarded in Cisco IOS Software if received on an interface where the packet did not have an MPLS label.
This vulnerability is documented in Cisco bug ID CSCto07919 and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2011-3274. The packet used to exploit this vulnerability would not affect Cisco IOS Software if received on an interface where the packet did not have an MPLS label.
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
- CSCto07919 ("Crafted IPv6 packet may cause MPLS configured device to reload")
CVSS Base Score - 6.1 Access Vector - Adjacent Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete
CVSS Temporal Score - 5.0 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed
- CSCtj30155 ("ICMPv6 packet may cause MPLS configured 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
Impact
Successful exploitation of these vulnerabilities may cause the device to reload. Repeated exploitation could result in a sustained denial of service condition.
Software Versions and Fixes
When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance.
Additionally, the Cisco IOS Software Checker is available on the Cisco Security Intelligence Operations (SIO) portal at http://tools.cisco.com/security/center/selectIOSVersion.x. It provides several features for checking which Security Advisories affect specified versions of Cisco IOS Software.
Cisco IOS Software +-----------------
Each row of the following Cisco IOS Software table corresponds to a Cisco IOS Software train. If a particular train is vulnerable, the earliest releases that contain the fix are listed in the First Fixed Release For This Advisory column. The First Fixed Release for All Advisories in the September 2011 Bundled Publication column lists the earliest possible releases that correct all the published vulnerabilities in the Cisco IOS Software Security Advisory bundled publication. Cisco recommends upgrading to the latest available release, where possible.
+------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+-----------------------------------------------| | Affected | | First Fixed Release | | 12.0-Based | First Fixed Release | for All Advisories in | | Releases | For This Advisory | the September 2011 | | | | Bundled Publication | |------------------------------------------------------------| | There are no affected 12.0-based releases | |------------------------------------------------------------| | Affected | | First Fixed Release | | 12.1-Based | First Fixed Release | for All Advisories in | | Releases | For This Advisory | the September 2011 | | | | Bundled Publication | |------------+-----------------------+-----------------------| | 12.1E | Not vulnerable | 12.2(18)SXF17b | |------------+-----------------------+-----------------------| | Affected | | First Fixed Release | | 12.2-Based | First Fixed Release | for All Advisories in | | Releases | For This Advisory | the September 2011 | | | | Bundled Publication | |------------+-----------------------+-----------------------| | 12.2 | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2B | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2BC | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2BW | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2BX | Not vulnerable | fixed in Release | | | | 12.2SB | |------------+-----------------------+-----------------------| | 12.2BY | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2BZ | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2CX | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2CY | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2CZ | Not vulnerable | fixed in Release | | | | 12.2SB | |------------+-----------------------+-----------------------| | 12.2DA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2DD | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2DX | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2EU | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Releases up to and | | 12.2EW | Not vulnerable | including 12.2(20)EW4 | | | | are not vulnerable. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2EWA | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2EX | Not vulnerable | 12.2(55)EX3 | |------------+-----------------------+-----------------------| | 12.2EY | Not vulnerable | 12.2(58)EY | |------------+-----------------------+-----------------------| | | | Vulnerable; migrate | | 12.2EZ | Not vulnerable | to any release in | | | | 15.0SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2FX | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2FY | Not vulnerable | fixed in Release | | | | 12.2EX | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2FZ | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; migrate | | 12.2IRA | Not vulnerable | to any release in | | | | 12.2IRG | |------------+-----------------------+-----------------------| | | | Vulnerable; migrate | | 12.2IRB | Not vulnerable | to any release in | | | | 12.2IRG | |------------+-----------------------+-----------------------| | | | Vulnerable; migrate | | 12.2IRC | Not vulnerable | to any release in | | | | 12.2IRG | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IRD | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IRE | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; migrate | | 12.2IRF | Not vulnerable | to any release in | | | | 12.2IRG | |------------+-----------------------+-----------------------| | 12.2IRG | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IXA | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IXB | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IXC | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IXD | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IXE | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IXF | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IXG | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IXH | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2JA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2JK | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2MB | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2MC | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2MRA | Not vulnerable | fixed in Release | | | | 12.2SRD | |------------+-----------------------+-----------------------| | 12.2MRB | Not vulnerable | 12.2(33)MRB5 | |------------+-----------------------+-----------------------| | | | Releases prior to | | | | 12.2(30)S are | | | | vulnerable; Releases | | 12.2S | Not vulnerable | 12.2(30)S and later | | | | are not vulnerable. | | | | First fixed in | | | | Release 12.2SB | |------------+-----------------------+-----------------------| | | | 12.2(31)SB20 | | 12.2SB | Not vulnerable | | | | | 12.2(33)SB10 | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SBC | Not vulnerable | fixed in Release | | | | 12.2SB | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SCA | Not vulnerable | fixed in Release | | | | 12.2SCC | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SCB | Not vulnerable | fixed in Release | | | | 12.2SCC | |------------+-----------------------+-----------------------| | 12.2SCC | Not vulnerable | 12.2(33)SCC7 | |------------+-----------------------+-----------------------| | 12.2SCD | Not vulnerable | 12.2(33)SCD6 | |------------+-----------------------+-----------------------| | | | 12.2(33)SCE1 | | 12.2SCE | Not vulnerable | | | | | 12.2(33)SCE2 | |------------+-----------------------+-----------------------| | 12.2SCF | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | 12.2(55)SE3 | | 12.2SE | Not vulnerable | | | | | 12.2(58)SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SEA | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SEB | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SEC | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SED | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SEE | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SEF | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Releases prior to | | | | 12.2(25)SEG4 are | | | | vulnerable; Releases | | 12.2SEG | Not vulnerable | 12.2(25)SEG4 and | | | | later are not | | | | vulnerable. First | | | | fixed in Release | | | | 12.2EX | |------------+-----------------------+-----------------------| | | | Releases prior to | | | | 12.2(53)SG4 are | | 12.2SG | Not vulnerable | vulnerable; Releases | | | | 12.2(53)SG4 and later | | | | are not vulnerable. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2SGA | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2SL | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2SM | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2SO | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SQ | Not vulnerable | 12.2(50)SQ3 | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SRA | Not vulnerable | fixed in Release | | | | 12.2SRD | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SRB | Not vulnerable | fixed in Release | | | | 12.2SRD | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SRC | Not vulnerable | fixed in Release | | | | 12.2SRD | |------------+-----------------------+-----------------------| | 12.2SRD | Not vulnerable | 12.2(33)SRD6 | |------------+-----------------------+-----------------------| | 12.2SRE | 12.2(33)SRE4 | 12.2(33)SRE4 | |------------+-----------------------+-----------------------| | 12.2STE | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SU | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | | Releases prior to | | | | 12.2(29a)SV are | | | | vulnerable; Releases | | 12.2SV | Not vulnerable | 12.2(29a)SV and later | | | | are not vulnerable. | | | | Migrate to any | | | | release in 12.2SVD | |------------+-----------------------+-----------------------| | 12.2SVA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SVC | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SVD | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SVE | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2SW | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SX | Not vulnerable | fixed in Release | | | | 12.2SXF | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SXA | Not vulnerable | fixed in Release | | | | 12.2SXF | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SXB | Not vulnerable | fixed in Release | | | | 12.2SXF | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SXD | Not vulnerable | fixed in Release | | | | 12.2SXF | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SXE | Not vulnerable | fixed in Release | | | | 12.2SXF | |------------+-----------------------+-----------------------| | 12.2SXF | Not vulnerable | 12.2(18)SXF17b | |------------+-----------------------+-----------------------| | 12.2SXH | Not vulnerable | 12.2(33)SXH8a | |------------+-----------------------+-----------------------| | 12.2SXI | Not vulnerable | 12.2(33)SXI6 | |------------+-----------------------+-----------------------| | 12.2SXJ | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SY | Not vulnerable | 12.2(50)SY | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SZ | Not vulnerable | fixed in Release | | | | 12.2SB | |------------+-----------------------+-----------------------| | 12.2T | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2TPC | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2XA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XB | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2XC | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XD | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XE | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XF | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XG | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XH | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XI | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XJ | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XK | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XL | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XM | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XN | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XNA | See Cisco IOS-XE | See Cisco IOS-XE | | | Software Availability | Software Availability | |------------+-----------------------+-----------------------| | 12.2XNB | See Cisco IOS-XE | See Cisco IOS-XE | | | Software Availability | Software Availability | |------------+-----------------------+-----------------------| | 12.2XNC | See Cisco IOS-XE | See Cisco IOS-XE | | | Software Availability | Software Availability | |------------+-----------------------+-----------------------| | 12.2XND | See Cisco IOS-XE | See Cisco IOS-XE | | | Software Availability | Software Availability | |------------+-----------------------+-----------------------| | 12.2XNE | See Cisco IOS-XE | See Cisco IOS-XE | | | Software Availability | Software Availability | |------------+-----------------------+-----------------------| | 12.2XNF | See Cisco IOS-XE | See Cisco IOS-XE | | | Software Availability | Software Availability | |------------+-----------------------+-----------------------| | | | Releases prior to | | | | 12.2(54)XO are | | 12.2XO | Not vulnerable | vulnerable; Releases | | | | 12.2(54)XO and later | | | | are not vulnerable. | |------------+-----------------------+-----------------------| | 12.2XQ | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XR | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XS | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XT | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XU | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XV | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XW | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2YA | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2YB | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2YC | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2YD | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2YE | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YF | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YG | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YH | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YJ | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2YK | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YL | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2YM | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YN | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2YO | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2YP | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YQ | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YR | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YS | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YT | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YU | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YV | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YW | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YX | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YY | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YZ | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2ZA | Not vulnerable | fixed in Release | | | | 12.2SXF | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2ZB | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2ZC | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2ZD | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2ZE | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2ZF | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2ZG | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2ZH | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2ZJ | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2ZL | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2ZP | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2ZU | Not vulnerable | fixed in Release | | | | 12.2SXH | |------------+-----------------------+-----------------------| | 12.2ZX | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2ZY | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2ZYA | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | Affected | | First Fixed Release | | 12.3-Based | First Fixed Release | for All Advisories in | | Releases | For This Advisory | the September 2011 | | | | Bundled Publication | |------------------------------------------------------------| | There are no affected 12.3-based releases | |------------------------------------------------------------| | Affected | | First Fixed Release | | 12.4-Based | First Fixed Release | for All Advisories in | | Releases | For This Advisory | the September 2011 | | | | Bundled Publication | |------------------------------------------------------------| | There are no affected 12.4-based releases | |------------------------------------------------------------| | Affected | | First Fixed Release | | 15.0-Based | First Fixed Release | for All Advisories in | | Releases | For This Advisory | the September 2011 | | | | Bundled Publication | |------------+-----------------------+-----------------------| | 15.0M | 15.0(1)M7 | 15.0(1)M7 | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 15.0MR | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 15.0MRA | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | 15.0S | See Cisco IOS-XE | See Cisco IOS-XE | | | Software Availability | Software Availability | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 15.0SA | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 15.0SE | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 15.0SG | See Cisco IOS-XE | See Cisco IOS-XE | | | Software Availability | Software Availability | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 15.0XA | fixed in Release | fixed in Release | | | 15.1T | 15.1T | |------------+-----------------------+-----------------------| | 15.0XO | See Cisco IOS-XE | See Cisco IOS-XE | | | Software Availability | Software Availability | |------------+-----------------------+-----------------------| | Affected | | First Fixed Release | | 15.1-Based | First Fixed Release | for All Advisories in | | Releases | For This Advisory | the September 2011 | | | | Bundled Publication | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 15.1EY | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 15.1GC | fixed in Release | fixed in Release | | | 15.1T | 15.1T | |------------+-----------------------+-----------------------| | 15.1M | 15.1(4)M1 | 15.1(4)M2; Available | | | | on 30-SEP-11 | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 15.1MR | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 15.1S | See Cisco IOS-XE | See Cisco IOS-XE | | | Software Availability | Software Availability | |------------+-----------------------+-----------------------| | | 15.1(1)T4; Available | | | | on 09-DEC-11 | 15.1(2)T4 | | 15.1T | | | | | 15.1(2)T4 | 15.1(1)T4 on | | | | 8-Dec-2011 | | | 15.1(3)T2 | | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 15.1XB | fixed in Release | fixed in Release | | | 15.1T | 15.1T | |------------+-----------------------+-----------------------| | Affected | | First Fixed Release | | 15.2-Based | First Fixed Release | for All Advisories in | | Releases | For This Advisory | the September 2011 | | | | Bundled Publication | |------------------------------------------------------------| | There are no affected 15.2-based releases | +------------------------------------------------------------+
Cisco IOS XE Software +--------------------
Cisco IOS XE Software is affected by the vulnerability disclosed in this document.
+------------------------------------------------------------+ | Cisco | First Fixed | First Fixed Release for All | | IOS XE | Release For | Advisories in the September | | Release | This Advisory | 2011 Bundled Publication | |----------+----------------+--------------------------------| | | Vulnerable; | | | 2.1.x | migrate to | Vulnerable; migrate to 3.3.2S | | | 3.3.2S or | or later | | | later | | |----------+----------------+--------------------------------| | | Vulnerable; | | | 2.2.x | migrate to | Vulnerable; migrate to 3.3.2S | | | 3.3.2S or | or later | | | later | | |----------+----------------+--------------------------------| | | Vulnerable; | | | 2.3.x | migrate to | Vulnerable; migrate to 3.3.2S | | | 3.3.2S or | or later | | | later | | |----------+----------------+--------------------------------| | | Vulnerable; | | | 2.4.x | migrate to | Vulnerable; migrate to 3.3.2S | | | 3.3.2S or | or later | | | later | | |----------+----------------+--------------------------------| | | Vulnerable; | | | 2.5.x | migrate to | Vulnerable; migrate to 3.3.2S | | | 3.3.2S or | or later | | | later | | |----------+----------------+--------------------------------| | | Vulnerable; | | | 2.6.x | migrate to | Vulnerable; migrate to 3.3.2S | | | 3.3.2S or | or later | | | later | | |----------+----------------+--------------------------------| | 3.1.xS | 3.1.4S | Vulnerable; migrate to 3.3.2S | | | | or later | |----------+----------------+--------------------------------| | 3.1.xSG | Not vulnerable | Vulnerable; migrate to 3.2.0SG | | | | or later | |----------+----------------+--------------------------------| | | Vulnerable; | | | 3.2.xS | migrate to | Vulnerable; migrate to 3.3.2S | | | 3.3.2S or | or later | | | later | | |----------+----------------+--------------------------------| | 3.2.xSG | Not vulnerable | Not vulnerable | |----------+----------------+--------------------------------| | 3.3.xS | 3.3.2S | 3.3.2S | |----------+----------------+--------------------------------| | 3.4.xS | Not vulnerable | Not vulnerable | +------------------------------------------------------------+
For mapping of Cisco IOS XE to Cisco IOS releases, please refer to the Cisco IOS XE 2 Release Notes, Cisco IOS XE 3S Release Notes, and Cisco IOS XE 3SG Release Notes.
Cisco IOS XR Software +--------------------
Cisco IOS XR Software is not affected by the vulnerability disclosed in this document.
Cisco IOS XR Software is not affected by any of the vulnerabilities in the September 2011 bundled publication.
Workarounds
For both vulnerabilities the following workaround applies:
Disabling MPLS TTL Propagation +-----------------------------
Disabling MPLS TTL propagation will prevent exploitation of these vulnerabilities. MPLS TTL propagation will have to be disabled on all PE routers in the MPLS domain. To disable MPLS TTL propagation, enter the global configuration command "no mpls ip propagate-ttl". If only "no mpls ip propagate-ttl forward" is configured, the vulnerabilities could still be exploited from within the MPLS domain.
For more information about the MPLS TTL propagation command, refer to the configuration guide at:
http://www.cisco.com/en/US/docs/ios/mpls/command/reference/mp_m1.html#wp1013846
Obtaining Fixed Software
Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.
Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
Do not contact psirt@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/en/US/support/ tsd_cisco_worldwide_contacts.html for additional TAC contact information, including localized telephone numbers, and instructions and e-mail addresses for use in various languages.
Exploitation and Public Announcements
The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities described in this advisory.
These vulnerabilities were discovered when handling customer support calls.
Status of this Notice: FINAL
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors.
Distribution
This advisory is posted on Cisco's worldwide website at:
http://www.cisco.com/warp/public/707/cisco-sa-20110928-ipv6mpls.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 1.0 | 2011-September-28 | Initial public release | +------------------------------------------------------------+
Cisco Security Procedures
Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt.
+-------------------------------------------------------------------- Copyright 2010-2011 Cisco Systems, Inc. All rights reserved. +--------------------------------------------------------------------
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"data": "Unspecified vulnerability in Cisco IOS 12.2SRE before 12.2(33)SRE4, 15.0, and 15.1, and IOS XE 2.1.x through 3.3.x, when an MPLS domain is configured, allows remote attackers to cause a denial of service (device reload) via an ICMPv6 packet, related to an expired MPLS TTL, aka Bug ID CSCtj30155. The problem is Bug ID CSCtj30155 It is a problem.By a third party ICMPv6 Service disruption via packets ( Reload device ) There is a possibility of being put into a state. Cisco IOS is prone to multiple remote denial-of-service vulnerabilities. \nAn attacker can exploit these issues to cause an affected device to reload, denying service to legitimate users. \nThese issues are being tracked by Cisco Bug IDs:\nCSCto07919\nCSCtj30155. ----------------------------------------------------------------------\n\nOvum says ad hoc tools are out-dated. The best practice approach?\nFast vulnerability intelligence, threat handling, and setup in one tool. \n\nRead the new report on the Secunia VIM:\nhttp://secunia.com/products/corporate/vim/ovum_2011_request/ \n\n----------------------------------------------------------------------\n\nTITLE:\nCisco IOS MPLS IPv6 and ICMPv6 Packet Processing Two Denial of\nService Vulnerabilities\n\nSECUNIA ADVISORY ID:\nSA46145\n\nVERIFY ADVISORY:\nSecunia.com\nhttp://secunia.com/advisories/46145/\nCustomer Area (Credentials Required)\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=46145\n\nRELEASE DATE:\n2011-10-31\n\nDISCUSS ADVISORY:\nhttp://secunia.com/advisories/46145/#comments\n\nAVAILABLE ON SITE AND IN CUSTOMER AREA:\n * Last Update\n * Popularity\n * Comments\n * Criticality Level\n * Impact\n * Where\n * Solution Status\n * Operating System / Software\n * CVE Reference(s)\n\nhttp://secunia.com/advisories/46145/\n\nONLY AVAILABLE IN CUSTOMER AREA:\n * Authentication Level\n * Report Reliability\n * Secunia PoC\n * Secunia Analysis\n * Systems Affected\n * Approve Distribution\n * Remediation Status\n * Secunia CVSS Score\n * CVSS\n\nhttps://ca.secunia.com/?page=viewadvisory\u0026vuln_id=46145\n\nONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:\n * AUTOMATED SCANNING\n\nhttp://secunia.com/vulnerability_scanning/personal/\nhttp://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/\n\nDESCRIPTION:\nTwo vulnerabilities have been reported in Cisco IOS, which can be\nexploited by malicious people to cause a DoS (Denial of Service). \n\nPlease see the vendor\u0027s advisory for a list of affected versions. \n\nSOLUTION:\nUpdate to a fixed version (please see the vendor\u0027s advisory for\ndetails). \n\nPROVIDED AND/OR DISCOVERED BY:\nReported by the vendor. \n\nORIGINAL ADVISORY:\nhttp://www.cisco.com/warp/public/707/cisco-sa-20110928-ipv6mpls.shtml\n\nOTHER REFERENCES:\nFurther details available in Customer Area:\nhttp://secunia.com/vulnerability_intelligence/\n\nDEEP LINKS:\nFurther details available in Customer Area:\nhttp://secunia.com/vulnerability_intelligence/\n\nEXTENDED DESCRIPTION:\nFurther details available in Customer Area:\nhttp://secunia.com/vulnerability_intelligence/\n\nEXTENDED SOLUTION:\nFurther details available in Customer Area:\nhttp://secunia.com/vulnerability_intelligence/\n\nEXPLOIT:\nFurther details available in Customer Area:\nhttp://secunia.com/vulnerability_intelligence/\n\n----------------------------------------------------------------------\n\nAbout:\nThis Advisory was delivered by Secunia as a free service to help\nprivate users keeping their systems up to date against the latest\nvulnerabilities. \n\nSubscribe:\nhttp://secunia.com/advisories/secunia_security_advisories/\n\nDefinitions: (Criticality, Where etc.)\nhttp://secunia.com/advisories/about_secunia_advisories/\n\n\nPlease Note:\nSecunia recommends that you verify all advisories you receive by\nclicking the link. \nSecunia NEVER sends attached files with advisories. \nSecunia does not advise people to install third party patches, only\nuse those supplied by the vendor. \n\nFor more information:\nSA46145\n\nThe vulnerabilities are reported in versions 2.1.x through 2.6.x and\n3.2.xS. These\nvulnerabilities are:\n\n * Crafted IPv6 Packet May Cause MPLS-Configured Device to Reload\n * ICMPv6 Packet May Cause MPLS-Configured Device to Reload\n\nCisco has released free software updates that address these\nvulnerabilities. \n\nWorkarounds that mitigate these vulnerabilities are available. \n\nThis advisory is posted at\nhttp://www.cisco.com/warp/public/707/cisco-sa-20110928-ipv6mpls.shtml. \n\nNote: The September 28, 2011, Cisco IOS Software Security Advisory\nbundled publication includes ten Cisco Security Advisories. Each advisory lists the Cisco IOS Software releases that\ncorrect the vulnerability or vulnerabilities detailed in the advisory as\nwell as the Cisco IOS Software releases that correct all vulnerabilities\nin the September 2011 Bundled Publication. \n\nIndividual publication links are in \"Cisco Event Response: Semiannual\nCisco IOS Software Security Advisory Bundled Publication\" at the\nfollowing link:\n\nhttp://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep11.html\n\nAffected Products\n=================\n\nVulnerable Products\n+------------------\n\nCisco IOS Software or Cisco IOS XE Software devices (hereafter both\nreferenced as Cisco IOS Software in this document) that are running\nvulnerable versions of Cisco IOS Software and configured for MPLS are\naffected by two vulnerabilities related to IPv6 traffic that\ntraverses an MPLS domain. The two vulnerabilities are independent of\neach other. \n\nNote: IPv6 does not need to be configured on the affected devices\nthemselves. The vulnerabilities do require the MPLS label switched\npackets to have specific IPv6 payloads to be exploited. \n\nTo determine whether a device is configured for MPLS, log in to the\ndevice and issue the command-line interface (CLI) command \"show mpls\ninterface\". If the IP state is \"Yes\", the device is vulnerable. The\nfollowing example shows a device that has MPLS configured on\ninterface Ethernet0/0:\n\n Router#show mpls interface\n Interface IP Tunnel BGP Static Operational\n Ethernet0/0 Yes (ldp) No No No Yes\n Router#\n\nThe following two examples show responses from a device with MPLS\nforwarding disabled. The first example shows a return of no\ninterfaces:\n\n router#show mpls interface\n Interface IP Tunnel BGP Static Operational\n routers#\n\nIn the second example, the device provides a message indicating that\nMPLS forwarding is not configured:\n\n router#show mpls interface\n no MPLS apps enabled or MPLS not enabled on any interfaces\n\n router#\n\nTo determine the Cisco IOS Software release that is running on a Cisco\nproduct, administrators can log in to the device and issue the \"show\nversion\" command to display the system banner. The system banner\nconfirms that the device is running Cisco IOS Software by displaying\ntext similar to \"Cisco Internetwork Operating System Software\" or \"Cisco\nIOS Software.\" The image name displays in parentheses, followed by\n\"Version\" and the Cisco IOS Software release name. Other Cisco devices\ndo not have the \"show version\" command or may provide different output. \n\nThe following example identifies a Cisco product that is running\nCisco IOS Software Release 15.0(1)M1 with an installed image name of\nC3900-UNIVERSALK9-M:\n\n Router\u003e show version\n Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.0(1)M1, RELEASE SOFTWARE (fc1)\n Technical Support: http://www.cisco.com/techsupport\n Copyright (c) 1986-2009 by Cisco Systems, Inc. \n Compiled Wed 02-Dec-09 17:17 by prod_rel_team\n\n\n !--- output truncated\n\n\nAdditional information about Cisco IOS Software\nrelease naming conventions is available in the white\npaper Cisco IOS and NX-OS Software Reference Guide at\nhttp://www.cisco.com/web/about/security/intelligence/ios-ref.html. \n\nProducts Confirmed Not Vulnerable\n+--------------------------------\n\nDevices that are not configured for MPLS are not vulnerable. \n\nDetails\n=======\n\nThe packet handling nodes in an MPLS network are called provider\nrouters (P routers) and provider edge routers (PE routers) and are\nconfigured with MPLS. Both P and PE routers are vulnerable to both\nthe vulnerabilities disclosed in this advisory. \n\nIn networks that have MPLS enabled and could carry MPLS label\nswitched packets with IPv6 payloads, the device may crash when\nprocessing MPLS label switched packets with specific IPv6 payloads. \nTypical deployment scenarios that would be affected by either\nvulnerability would be Cisco IPv6 Provider Edge Router (6PE) or IPv6\nVPN Provider Edge Router (6VPE). \nThe crafted packet used to exploit this vulnerability would be\nsilently discarded in Cisco IOS Software if received on an interface\nwhere the packet did not have an MPLS label. \n\nThis vulnerability is documented in Cisco bug ID CSCto07919 and has been\nassigned Common Vulnerabilities and Exposures (CVE) ID CVE-2011-3274. \nThe packet used to exploit this vulnerability would not affect Cisco\nIOS Software if received on an interface where the packet did not\nhave an MPLS label. \n\nVulnerability Scoring Details\n=============================\n\nCisco has provided scores for the vulnerabilities in this advisory\nbased on the Common Vulnerability Scoring System (CVSS). The CVSS\nscoring in this Security Advisory is done in accordance with CVSS\nversion 2.0. \n\nCVSS is a standards-based scoring method that conveys vulnerability\nseverity and helps determine urgency and priority of response. \n\nCisco has provided a base and temporal score. Customers can then\ncompute environmental scores to assist in determining the impact of\nthe vulnerability in individual networks. \n\nCisco has provided an FAQ to answer additional questions regarding\nCVSS at:\n\nhttp://www.cisco.com/web/about/security/intelligence/cvss-qandas.html\n\nCisco has also provided a CVSS calculator to help compute the\nenvironmental impact for individual networks at:\n\nhttp://intellishield.cisco.com/security/alertmanager/cvss\n\n\n* CSCto07919 (\"Crafted IPv6 packet may cause MPLS configured device to\nreload\")\n\nCVSS Base Score - 6.1\n Access Vector - Adjacent Network\n Access Complexity - Low\n Authentication - None\n Confidentiality Impact - None\n Integrity Impact - None\n Availability Impact - Complete\n\nCVSS Temporal Score - 5.0\n Exploitability - Functional\n Remediation Level - Official-Fix\n Report Confidence - Confirmed\n\n\n* CSCtj30155 (\"ICMPv6 packet may cause MPLS configured device to\nreload\")\n\nCVSS Base Score - 7.8\n Access Vector - Network\n Access Complexity - Low\n Authentication - None\n Confidentiality Impact - None\n Integrity Impact - None\n Availability Impact - Complete\n\nCVSS Temporal Score - 6.4\n Exploitability - Functional\n Remediation Level - Official-Fix\n Report Confidence - Confirmed\n\n\nImpact\n======\n\nSuccessful exploitation of these vulnerabilities may cause the device\nto reload. Repeated exploitation could result in a sustained denial\nof service condition. \n\nSoftware Versions and Fixes\n===========================\n\nWhen considering software upgrades, also consult\nhttp://www.cisco.com/go/psirt and any subsequent advisories to determine\nexposure and a complete upgrade solution. \n\nIn all cases, customers should exercise caution to be certain the\ndevices to be upgraded contain sufficient memory and that current\nhardware and software configurations will continue to be supported\nproperly by the new release. If the information is not clear, contact\nthe Cisco Technical Assistance Center (TAC) or your contracted\nmaintenance provider for assistance. \n\nAdditionally, the Cisco IOS Software Checker is available on\nthe Cisco Security Intelligence Operations (SIO) portal at\nhttp://tools.cisco.com/security/center/selectIOSVersion.x. It provides\nseveral features for checking which Security Advisories affect specified\nversions of Cisco IOS Software. \n\nCisco IOS Software\n+-----------------\n\nEach row of the following Cisco IOS Software table corresponds to a\nCisco IOS Software train. If a particular train is vulnerable, the\nearliest releases that contain the fix are listed in the First Fixed\nRelease For This Advisory column. The First Fixed Release for All\nAdvisories in the September 2011 Bundled Publication column lists the\nearliest possible releases that correct all the published\nvulnerabilities in the Cisco IOS Software Security Advisory bundled\npublication. Cisco recommends upgrading to the latest available\nrelease, where possible. \n\n+------------------------------------------------------------+\n| Major | Availability of Repaired Releases |\n| Release | |\n|------------+-----------------------------------------------|\n| Affected | | First Fixed Release |\n| 12.0-Based | First Fixed Release | for All Advisories in |\n| Releases | For This Advisory | the September 2011 |\n| | | Bundled Publication |\n|------------------------------------------------------------|\n| There are no affected 12.0-based releases |\n|------------------------------------------------------------|\n| Affected | | First Fixed Release |\n| 12.1-Based | First Fixed Release | for All Advisories in |\n| Releases | For This Advisory | the September 2011 |\n| | | Bundled Publication |\n|------------+-----------------------+-----------------------|\n| 12.1E | Not vulnerable | 12.2(18)SXF17b |\n|------------+-----------------------+-----------------------|\n| Affected | | First Fixed Release |\n| 12.2-Based | First Fixed Release | for All Advisories in |\n| Releases | For This Advisory | the September 2011 |\n| | | Bundled Publication |\n|------------+-----------------------+-----------------------|\n| 12.2 | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| 12.2B | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| 12.2BC | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| 12.2BW | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2BX | Not vulnerable | fixed in Release |\n| | | 12.2SB |\n|------------+-----------------------+-----------------------|\n| 12.2BY | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2BZ | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2CX | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| 12.2CY | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2CZ | Not vulnerable | fixed in Release |\n| | | 12.2SB |\n|------------+-----------------------+-----------------------|\n| 12.2DA | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2DD | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2DX | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2EU | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Releases up to and |\n| 12.2EW | Not vulnerable | including 12.2(20)EW4 |\n| | | are not vulnerable. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2EWA | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 12.2EX | Not vulnerable | 12.2(55)EX3 |\n|------------+-----------------------+-----------------------|\n| 12.2EY | Not vulnerable | 12.2(58)EY |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; migrate |\n| 12.2EZ | Not vulnerable | to any release in |\n| | | 15.0SE |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2FX | Not vulnerable | fixed in Release |\n| | | 12.2SE |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2FY | Not vulnerable | fixed in Release |\n| | | 12.2EX |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2FZ | Not vulnerable | fixed in Release |\n| | | 12.2SE |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; migrate |\n| 12.2IRA | Not vulnerable | to any release in |\n| | | 12.2IRG |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; migrate |\n| 12.2IRB | Not vulnerable | to any release in |\n| | | 12.2IRG |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; migrate |\n| 12.2IRC | Not vulnerable | to any release in |\n| | | 12.2IRG |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2IRD | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2IRE | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; migrate |\n| 12.2IRF | Not vulnerable | to any release in |\n| | | 12.2IRG |\n|------------+-----------------------+-----------------------|\n| 12.2IRG | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2IXA | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2IXB | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2IXC | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2IXD | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2IXE | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2IXF | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2IXG | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2IXH | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 12.2JA | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2JK | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2MB | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2MC | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2MRA | Not vulnerable | fixed in Release |\n| | | 12.2SRD |\n|------------+-----------------------+-----------------------|\n| 12.2MRB | Not vulnerable | 12.2(33)MRB5 |\n|------------+-----------------------+-----------------------|\n| | | Releases prior to |\n| | | 12.2(30)S are |\n| | | vulnerable; Releases |\n| 12.2S | Not vulnerable | 12.2(30)S and later |\n| | | are not vulnerable. |\n| | | First fixed in |\n| | | Release 12.2SB |\n|------------+-----------------------+-----------------------|\n| | | 12.2(31)SB20 |\n| 12.2SB | Not vulnerable | |\n| | | 12.2(33)SB10 |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SBC | Not vulnerable | fixed in Release |\n| | | 12.2SB |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SCA | Not vulnerable | fixed in Release |\n| | | 12.2SCC |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SCB | Not vulnerable | fixed in Release |\n| | | 12.2SCC |\n|------------+-----------------------+-----------------------|\n| 12.2SCC | Not vulnerable | 12.2(33)SCC7 |\n|------------+-----------------------+-----------------------|\n| 12.2SCD | Not vulnerable | 12.2(33)SCD6 |\n|------------+-----------------------+-----------------------|\n| | | 12.2(33)SCE1 |\n| 12.2SCE | Not vulnerable | |\n| | | 12.2(33)SCE2 |\n|------------+-----------------------+-----------------------|\n| 12.2SCF | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | 12.2(55)SE3 |\n| 12.2SE | Not vulnerable | |\n| | | 12.2(58)SE |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SEA | Not vulnerable | fixed in Release |\n| | | 12.2SE |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SEB | Not vulnerable | fixed in Release |\n| | | 12.2SE |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SEC | Not vulnerable | fixed in Release |\n| | | 12.2SE |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SED | Not vulnerable | fixed in Release |\n| | | 12.2SE |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SEE | Not vulnerable | fixed in Release |\n| | | 12.2SE |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SEF | Not vulnerable | fixed in Release |\n| | | 12.2SE |\n|------------+-----------------------+-----------------------|\n| | | Releases prior to |\n| | | 12.2(25)SEG4 are |\n| | | vulnerable; Releases |\n| 12.2SEG | Not vulnerable | 12.2(25)SEG4 and |\n| | | later are not |\n| | | vulnerable. First |\n| | | fixed in Release |\n| | | 12.2EX |\n|------------+-----------------------+-----------------------|\n| | | Releases prior to |\n| | | 12.2(53)SG4 are |\n| 12.2SG | Not vulnerable | vulnerable; Releases |\n| | | 12.2(53)SG4 and later |\n| | | are not vulnerable. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2SGA | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 12.2SL | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2SM | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 12.2SO | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2SQ | Not vulnerable | 12.2(50)SQ3 |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SRA | Not vulnerable | fixed in Release |\n| | | 12.2SRD |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SRB | Not vulnerable | fixed in Release |\n| | | 12.2SRD |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SRC | Not vulnerable | fixed in Release |\n| | | 12.2SRD |\n|------------+-----------------------+-----------------------|\n| 12.2SRD | Not vulnerable | 12.2(33)SRD6 |\n|------------+-----------------------+-----------------------|\n| 12.2SRE | 12.2(33)SRE4 | 12.2(33)SRE4 |\n|------------+-----------------------+-----------------------|\n| 12.2STE | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2SU | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| | | Releases prior to |\n| | | 12.2(29a)SV are |\n| | | vulnerable; Releases |\n| 12.2SV | Not vulnerable | 12.2(29a)SV and later |\n| | | are not vulnerable. |\n| | | Migrate to any |\n| | | release in 12.2SVD |\n|------------+-----------------------+-----------------------|\n| 12.2SVA | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2SVC | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2SVD | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2SVE | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2SW | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SX | Not vulnerable | fixed in Release |\n| | | 12.2SXF |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SXA | Not vulnerable | fixed in Release |\n| | | 12.2SXF |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SXB | Not vulnerable | fixed in Release |\n| | | 12.2SXF |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SXD | Not vulnerable | fixed in Release |\n| | | 12.2SXF |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SXE | Not vulnerable | fixed in Release |\n| | | 12.2SXF |\n|------------+-----------------------+-----------------------|\n| 12.2SXF | Not vulnerable | 12.2(18)SXF17b |\n|------------+-----------------------+-----------------------|\n| 12.2SXH | Not vulnerable | 12.2(33)SXH8a |\n|------------+-----------------------+-----------------------|\n| 12.2SXI | Not vulnerable | 12.2(33)SXI6 |\n|------------+-----------------------+-----------------------|\n| 12.2SXJ | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2SY | Not vulnerable | 12.2(50)SY |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2SZ | Not vulnerable | fixed in Release |\n| | | 12.2SB |\n|------------+-----------------------+-----------------------|\n| 12.2T | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2TPC | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 12.2XA | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XB | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| 12.2XC | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XD | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XE | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XF | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XG | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XH | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XI | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XJ | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XK | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XL | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XM | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XN | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XNA | See Cisco IOS-XE | See Cisco IOS-XE |\n| | Software Availability | Software Availability |\n|------------+-----------------------+-----------------------|\n| 12.2XNB | See Cisco IOS-XE | See Cisco IOS-XE |\n| | Software Availability | Software Availability |\n|------------+-----------------------+-----------------------|\n| 12.2XNC | See Cisco IOS-XE | See Cisco IOS-XE |\n| | Software Availability | Software Availability |\n|------------+-----------------------+-----------------------|\n| 12.2XND | See Cisco IOS-XE | See Cisco IOS-XE |\n| | Software Availability | Software Availability |\n|------------+-----------------------+-----------------------|\n| 12.2XNE | See Cisco IOS-XE | See Cisco IOS-XE |\n| | Software Availability | Software Availability |\n|------------+-----------------------+-----------------------|\n| 12.2XNF | See Cisco IOS-XE | See Cisco IOS-XE |\n| | Software Availability | Software Availability |\n|------------+-----------------------+-----------------------|\n| | | Releases prior to |\n| | | 12.2(54)XO are |\n| 12.2XO | Not vulnerable | vulnerable; Releases |\n| | | 12.2(54)XO and later |\n| | | are not vulnerable. |\n|------------+-----------------------+-----------------------|\n| 12.2XQ | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XR | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XS | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XT | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XU | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XV | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2XW | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2YA | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| 12.2YB | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2YC | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2YD | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2YE | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YF | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YG | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YH | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YJ | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 12.2YK | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YL | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 12.2YM | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YN | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 12.2YO | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2YP | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YQ | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YR | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YS | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YT | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YU | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YV | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YW | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YX | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YY | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2YZ | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2ZA | Not vulnerable | fixed in Release |\n| | | 12.2SXF |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2ZB | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 12.2ZC | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2ZD | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2ZE | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| 12.2ZF | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| 12.2ZG | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 12.2ZH | Not vulnerable | Vulnerable; first |\n| | | fixed in Release 12.4 |\n|------------+-----------------------+-----------------------|\n| 12.2ZJ | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2ZL | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 12.2ZP | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; first |\n| 12.2ZU | Not vulnerable | fixed in Release |\n| | | 12.2SXH |\n|------------+-----------------------+-----------------------|\n| 12.2ZX | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2ZY | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 12.2ZYA | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| Affected | | First Fixed Release |\n| 12.3-Based | First Fixed Release | for All Advisories in |\n| Releases | For This Advisory | the September 2011 |\n| | | Bundled Publication |\n|------------------------------------------------------------|\n| There are no affected 12.3-based releases |\n|------------------------------------------------------------|\n| Affected | | First Fixed Release |\n| 12.4-Based | First Fixed Release | for All Advisories in |\n| Releases | For This Advisory | the September 2011 |\n| | | Bundled Publication |\n|------------------------------------------------------------|\n| There are no affected 12.4-based releases |\n|------------------------------------------------------------|\n| Affected | | First Fixed Release |\n| 15.0-Based | First Fixed Release | for All Advisories in |\n| Releases | For This Advisory | the September 2011 |\n| | | Bundled Publication |\n|------------+-----------------------+-----------------------|\n| 15.0M | 15.0(1)M7 | 15.0(1)M7 |\n|------------+-----------------------+-----------------------|\n| | Vulnerable; contact | Vulnerable; contact |\n| | your support | your support |\n| | organization per the | organization per the |\n| 15.0MR | instructions in the | instructions in the |\n| | Obtaining Fixed | Obtaining Fixed |\n| | Software section of | Software section of |\n| | this advisory. | this advisory. |\n|------------+-----------------------+-----------------------|\n| | Vulnerable; contact | Vulnerable; contact |\n| | your support | your support |\n| | organization per the | organization per the |\n| 15.0MRA | instructions in the | instructions in the |\n| | Obtaining Fixed | Obtaining Fixed |\n| | Software section of | Software section of |\n| | this advisory. | this advisory. |\n|------------+-----------------------+-----------------------|\n| 15.0S | See Cisco IOS-XE | See Cisco IOS-XE |\n| | Software Availability | Software Availability |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 15.0SA | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 15.0SE | Not vulnerable | Not vulnerable |\n|------------+-----------------------+-----------------------|\n| 15.0SG | See Cisco IOS-XE | See Cisco IOS-XE |\n| | Software Availability | Software Availability |\n|------------+-----------------------+-----------------------|\n| | Vulnerable; 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Available |\n| | | on 30-SEP-11 |\n|------------+-----------------------+-----------------------|\n| | | Vulnerable; contact |\n| | | your support |\n| | | organization per the |\n| 15.1MR | Not vulnerable | instructions in the |\n| | | Obtaining Fixed |\n| | | Software section of |\n| | | this advisory. |\n|------------+-----------------------+-----------------------|\n| 15.1S | See Cisco IOS-XE | See Cisco IOS-XE |\n| | Software Availability | Software Availability |\n|------------+-----------------------+-----------------------|\n| | 15.1(1)T4; Available | |\n| | on 09-DEC-11 | 15.1(2)T4 |\n| 15.1T | | |\n| | 15.1(2)T4 | 15.1(1)T4 on |\n| | | 8-Dec-2011 |\n| | 15.1(3)T2 | |\n|------------+-----------------------+-----------------------|\n| | Vulnerable; first | Vulnerable; first |\n| 15.1XB | fixed in Release | fixed in Release |\n| | 15.1T | 15.1T |\n|------------+-----------------------+-----------------------|\n| Affected | | First Fixed Release |\n| 15.2-Based | First Fixed Release | for All Advisories in |\n| Releases | For This Advisory | the September 2011 |\n| | | Bundled Publication |\n|------------------------------------------------------------|\n| There are no affected 15.2-based releases |\n+------------------------------------------------------------+\n\nCisco IOS XE Software\n+--------------------\n\nCisco IOS XE Software is affected by the vulnerability disclosed in\nthis document. \n\n+------------------------------------------------------------+\n| Cisco | First Fixed | First Fixed Release for All |\n| IOS XE | Release For | Advisories in the September |\n| Release | This Advisory | 2011 Bundled Publication |\n|----------+----------------+--------------------------------|\n| | Vulnerable; | |\n| 2.1.x | migrate to | Vulnerable; migrate to 3.3.2S |\n| | 3.3.2S or | or later |\n| | later | |\n|----------+----------------+--------------------------------|\n| | Vulnerable; | |\n| 2.2.x | migrate to | Vulnerable; migrate to 3.3.2S |\n| | 3.3.2S or | or later |\n| | later | |\n|----------+----------------+--------------------------------|\n| | Vulnerable; | |\n| 2.3.x | migrate to | Vulnerable; migrate to 3.3.2S |\n| | 3.3.2S or | or later |\n| | later | |\n|----------+----------------+--------------------------------|\n| | Vulnerable; | |\n| 2.4.x | migrate to | Vulnerable; migrate to 3.3.2S |\n| | 3.3.2S or | or later |\n| | later | |\n|----------+----------------+--------------------------------|\n| | Vulnerable; | |\n| 2.5.x | migrate to | Vulnerable; migrate to 3.3.2S |\n| | 3.3.2S or | or later |\n| | later | |\n|----------+----------------+--------------------------------|\n| | Vulnerable; | |\n| 2.6.x | migrate to | Vulnerable; migrate to 3.3.2S |\n| | 3.3.2S or | or later |\n| | later | |\n|----------+----------------+--------------------------------|\n| 3.1.xS | 3.1.4S | Vulnerable; migrate to 3.3.2S |\n| | | or later |\n|----------+----------------+--------------------------------|\n| 3.1.xSG | Not vulnerable | Vulnerable; migrate to 3.2.0SG |\n| | | or later |\n|----------+----------------+--------------------------------|\n| | Vulnerable; | |\n| 3.2.xS | migrate to | Vulnerable; migrate to 3.3.2S |\n| | 3.3.2S or | or later |\n| | later | |\n|----------+----------------+--------------------------------|\n| 3.2.xSG | Not vulnerable | Not vulnerable |\n|----------+----------------+--------------------------------|\n| 3.3.xS | 3.3.2S | 3.3.2S |\n|----------+----------------+--------------------------------|\n| 3.4.xS | Not vulnerable | Not vulnerable |\n+------------------------------------------------------------+\n\nFor mapping of Cisco IOS XE to Cisco IOS releases, please refer to\nthe Cisco IOS XE 2 Release Notes, Cisco IOS XE 3S Release Notes, and\nCisco IOS XE 3SG Release Notes. \n\nCisco IOS XR Software\n+--------------------\n\nCisco IOS XR Software is not affected by the vulnerability disclosed\nin this document. \n\nCisco IOS XR Software is not affected by any of the vulnerabilities\nin the September 2011 bundled publication. \n\nWorkarounds\n===========\n\nFor both vulnerabilities the following workaround applies:\n\nDisabling MPLS TTL Propagation\n+-----------------------------\n\nDisabling MPLS TTL propagation will prevent exploitation of these\nvulnerabilities. MPLS TTL propagation will have to be disabled on all\nPE routers in the MPLS domain. To disable MPLS TTL propagation, enter\nthe global configuration command \"no mpls ip propagate-ttl\". If only \"no\nmpls ip propagate-ttl forward\" is configured, the vulnerabilities could\nstill be exploited from within the MPLS domain. \n\nFor more information about the MPLS TTL propagation command, refer to\nthe configuration guide at:\n\nhttp://www.cisco.com/en/US/docs/ios/mpls/command/reference/mp_m1.html#wp1013846\n\nObtaining Fixed Software\n========================\n\nCisco has released free software updates that address these\nvulnerabilities. Prior to deploying software, customers should\nconsult their maintenance provider or check the software for feature\nset compatibility and known issues specific to their environment. \n\nCustomers may only install and expect support for the feature\nsets they have purchased. By installing, downloading, accessing\nor otherwise using such software upgrades, customers agree to be\nbound by the terms of Cisco\u0027s software license terms found at\nhttp://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html,\nor as otherwise set forth at Cisco.com Downloads at\nhttp://www.cisco.com/public/sw-center/sw-usingswc.shtml. \n\nDo not contact psirt@cisco.com or security-alert@cisco.com for\nsoftware upgrades. \n\nCustomers with Service Contracts\n+-------------------------------\n\nCustomers with contracts should obtain upgraded software through\ntheir regular update channels. For most customers, this means that\nupgrades should be obtained through the Software Center on Cisco\u0027s\nworldwide website at http://www.cisco.com. \n\nCustomers using Third Party Support Organizations\n+------------------------------------------------\n\nCustomers whose Cisco products are provided or maintained through\nprior or existing agreements with third-party support organizations,\nsuch as Cisco Partners, authorized resellers, or service providers\nshould contact that support organization for guidance and assistance\nwith the appropriate course of action in regards to this advisory. \n\nThe effectiveness of any workaround or fix is dependent on specific\ncustomer situations, such as product mix, network topology, traffic\nbehavior, and organizational mission. Due to the variety of affected\nproducts and releases, customers should consult with their service\nprovider or support organization to ensure any applied workaround or\nfix is the most appropriate for use in the intended network before it\nis deployed. \n\nCustomers without Service Contracts\n+----------------------------------\n\nCustomers who purchase direct from Cisco but do not hold a Cisco\nservice contract, and customers who purchase through third-party\nvendors but are unsuccessful in obtaining fixed software through\ntheir point of sale should acquire upgrades by contacting the Cisco\nTechnical Assistance Center (TAC). TAC contacts are as follows. \n\n * +1 800 553 2447 (toll free from within North America)\n * +1 408 526 7209 (toll call from anywhere in the world)\n * e-mail: tac@cisco.com\n\nCustomers should have their product serial number available and be\nprepared to give the URL of this notice as evidence of entitlement to\na free upgrade. Free upgrades for non-contract customers must be\nrequested through the TAC. \n\nRefer to http://www.cisco.com/en/US/support/\ntsd_cisco_worldwide_contacts.html for additional TAC contact\ninformation, including localized telephone numbers, and instructions\nand e-mail addresses for use in various languages. \n\nExploitation and Public Announcements\n=====================================\n\nThe Cisco PSIRT is not aware of any public announcements or malicious\nuse of the vulnerabilities described in this advisory. \n\nThese vulnerabilities were discovered when handling customer support\ncalls. \n\nStatus of this Notice: FINAL\n============================\n\nTHIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY\nKIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF\nMERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE\nINFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS\nAT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS\nDOCUMENT AT ANY TIME. \n\nA stand-alone copy or Paraphrase of the text of this document that\nomits the distribution URL in the following section is an\nuncontrolled copy, and may lack important information or contain\nfactual errors. \n\nDistribution\n============\n\nThis advisory is posted on Cisco\u0027s worldwide website at:\n\nhttp://www.cisco.com/warp/public/707/cisco-sa-20110928-ipv6mpls.shtml\n\nIn addition to worldwide web posting, a text version of this notice\nis clear-signed with the Cisco PSIRT PGP key and is posted to the\nfollowing e-mail and Usenet news recipients. \n\n * cust-security-announce@cisco.com\n * first-bulletins@lists.first.org\n * bugtraq@securityfocus.com\n * vulnwatch@vulnwatch.org\n * cisco@spot.colorado.edu\n * cisco-nsp@puck.nether.net\n * full-disclosure@lists.grok.org.uk\n * comp.dcom.sys.cisco@newsgate.cisco.com\n\nFuture updates of this advisory, if any, will be placed on Cisco\u0027s\nworldwide website, but may or may not be actively announced on\nmailing lists or newsgroups. Users concerned about this problem are\nencouraged to check the above URL for any updates. \n\nRevision History\n================\n\n+------------------------------------------------------------+\n| Revision 1.0 | 2011-September-28 | Initial public release |\n+------------------------------------------------------------+\n\nCisco Security Procedures\n=========================\n\nComplete information on reporting security vulnerabilities\nin Cisco products, obtaining assistance with security\nincidents, and registering to receive security information\nfrom Cisco, is available on Cisco\u0027s worldwide website at\nhttp://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. \nThis includes instructions for press inquiries regarding\nCisco security notices. All Cisco security advisories are available at\nhttp://www.cisco.com/go/psirt. \n\n+--------------------------------------------------------------------\nCopyright 2010-2011 Cisco Systems, Inc. All rights reserved. \n+--------------------------------------------------------------------\n\n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1.4.11 (GNU/Linux)\n\niF4EAREIAAYFAk6Cp2QACgkQQXnnBKKRMNBQSAD9F2jD01t7WK98WW1TcHuB0ORh\nttZaRD2ayENEbxklbQgA/j6rRzsG/jk1QW1pJjZme3WKwdvNLy9BzRPTsONBz5Cv\n=kk0N\n-----END PGP SIGNATURE-----\n",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.