ID

VAR-201110-0058

CVE

CVE-2011-0945

TITLE

Cisco IOS Data-Link Switching Memory Leak Remote Denial of Service Vulnerability

DESCRIPTION

Memory leak in the Data-link switching (aka DLSw) feature in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xS before 3.1.3S and 3.2.xS before 3.2.1S, when implemented over Fast Sequence Transport (FST), allows remote attackers to cause a denial of service (memory consumption and device reload or hang) via a crafted IP protocol 91 packet, aka Bug ID CSCth69364. Cisco IOS is prone to a remote denial-of-service vulnerability. An attacker can exploit this issue to cause an affected device to reload, denying service to legitimate users. This issue is being tracked by Cisco Bug ID CSCth69364. Cisco's Internet Operating System (IOS) is a complex operating system optimized for Internet interconnection. Remote illegal attackers can use this vulnerability to cause denial of service. Cisco has released free software updates that address this vulnerability. This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20110928-dlsw.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 devices with the DLSw promiscuous feature enabled are affected by the vulnerability described in this advisory. Devices with the DLSw promiscuous feature enabled contain a line in the configuration defining a local DLSw peer with the promiscuous keyword. This configuration can be observed by issuing the command "show running-config". Systems configured with the DLSw promiscuous feature enabled contain a line similar to one of the following: dlsw local-peer promiscuous or dlsw local-peer peer-id <IP address> promiscuous To determine the software that runs on a Cisco IOS device, log in to the device and issue the "show version" command to display the system banner. Cisco IOS Software identifies itself as "Cisco Internetwork Operating System Software" or "Cisco IOS Software." Other Cisco devices do not have the "show version" command or give different output. The following example shows output from a device running IOS version 15.0(1)M1: 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 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 +-------------------------------- No other Cisco products are currently known to be affected by this vulnerability. Details ======= DLSw provides a means of transporting IBM Systems Network Architecture (SNA) and network BIOS (NetBIOS) traffic over an IP network. The Cisco implementation of DLSw over Fast Sequence Transport (FST) uses IP Protocol 91. The promiscuous DLSw feature permits the local peer to establish connection with remote peers that are not statically configured. A Cisco IOS device that is configured for DLSw listens for IP protocol 91 packets. Depending on the DLSw configuration, UDP port 2067, and, one or more TCP ports can also be opened. The vulnerability described in this document can only be exploited via IP Protocol 91 and can not be exploited using either the UDP or TCP transports. Devices with only statically configured DLSw peers are not affected by this vulnerability. Vulnerability Scoring Details ============================= Cisco has provided scores for the vulnerability in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0. CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response. Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks. Cisco has provided an FAQ to answer additional questions regarding CVSS at: http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at: http://intellishield.cisco.com/security/alertmanager/cvss * CSCth69364 ("DLSw FST Memory Leak") CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of the vulnerability may result in a memory leak that can lead to a denial of service condition. To identify the memory leak caused by this vulnerability, issue the "show dlsw peers | include FST.*DISCONN" command; a monotonically increasing list of FST peers that remain in the DISCONN state indicates that memory is being held, as shown in the following example: Router> show dlsw peers | include FST.*DISCONN FST 176.74.146.194 DISCONN 1 0 prom 0 - - - FST 9.180.128.186 DISCONN 1 0 prom 0 - - - FST 139.71.105.39 DISCONN 1 0 prom 0 - - - FST 138.150.39.18 DISCONN 1 0 prom 0 - - - FST 253.240.220.167 DISCONN 1 0 prom 0 - - - FST 252.186.119.224 DISCONN 1 0 prom 0 - - - FST 41.255.172.252 DISCONN 1 0 prom 0 - - - ! --- Output truncated Router> Software Versions and Fixes =========================== When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution. In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance. Additionally, the Cisco IOS Software Checker is available on the Cisco Security Intelligence Operations (SIO) portal at http://tools.cisco.com/security/center/selectIOSVersion.x. It provides several features for checking which Security Advisories affect specified versions of Cisco IOS Software. Cisco IOS Software +----------------- Each row of the following Cisco IOS Software table corresponds to a Cisco IOS Software train. If a particular train is vulnerable, the earliest releases that contain the fix are listed in the First Fixed Release For This Advisory column. The First Fixed Release for All Advisories in the September 2011 Bundled Publication column lists the earliest possible releases that correct all the published vulnerabilities in the Cisco IOS Software Security Advisory bundled publication. Cisco recommends upgrading to the latest available release, where possible. +------------------------------------------------------------+ | Major | Availability of Repaired Releases | | Release | | |------------+-----------------------------------------------| | Affected | | First Fixed Release | | 12.0-Based | First Fixed Release | for All Advisories in | | Releases | | the September 2011 | | | | Bundled Publication | |------------------------------------------------------------| | There are no affected 12.0-based releases | |------------------------------------------------------------| | Affected | | First Fixed Release | | 12.1-Based | First Fixed Release | for All Advisories in | | Releases | | the September 2011 | | | | Bundled Publication | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.1E | fixed in Release | fixed in Release | | | 12.2SXF | 12.2SXF | |------------+-----------------------+-----------------------| | Affected | | First Fixed Release | | 12.2-Based | First Fixed Release | for All Advisories in | | Releases | | the September 2011 | | | | Bundled Publication | |------------+-----------------------+-----------------------| | 12.2 | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | Vulnerable; first | | | | fixed in Release 12.4 | | | 12.2B | | Vulnerable; first | | | Releases up to and | fixed in Release 12.4 | | | including 12.2(2)B7 | | | | are not vulnerable. | | |------------+-----------------------+-----------------------| | 12.2BC | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2BW | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; first | | | | fixed in Release | | | | 12.2SB | Vulnerable; first | | 12.2BX | | fixed in Release | | | Releases up to and | 12.2SB | | | including 12.2(15)BX | | | | are not vulnerable. | | |------------+-----------------------+-----------------------| | 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 | Vulnerable; migrate | | 12.2IRA | to any release in | to any release in | | | 12.2IRG | 12.2IRG | |------------+-----------------------+-----------------------| | | Vulnerable; migrate | Vulnerable; migrate | | 12.2IRB | to any release in | to any release in | | | 12.2IRG | 12.2IRG | |------------+-----------------------+-----------------------| | | Vulnerable; migrate | Vulnerable; migrate | | 12.2IRC | to any release in | to any release in | | | 12.2IRG | 12.2IRG | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IRD | 12.2(33)IRD1 | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2IRE | 12.2(33)IRE3 | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | Vulnerable; migrate | Vulnerable; migrate | | 12.2IRF | to any release in | to any release in | | | 12.2IRG | 12.2IRG | |------------+-----------------------+-----------------------| | 12.2IRG | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2IXA | 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 | | 12.2IXB | 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 | | 12.2IXC | 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 | | 12.2IXD | 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 | | 12.2IXE | 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 | | 12.2IXF | 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 | | 12.2IXG | 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 | | 12.2IXH | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | 12.2JA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2JK | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2MB | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2MC | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | 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 | Releases prior to | | | 12.2(30)S are | 12.2(30)S are | | | vulnerable; Releases | vulnerable; Releases | | 12.2S | 12.2(30)S and later | 12.2(30)S and later | | | are not vulnerable. | are not vulnerable. | | | First fixed in | First fixed in | | | Release 12.2SB | Release 12.2SB | |------------+-----------------------+-----------------------| | | 12.2(31)SB20 | 12.2(31)SB2012.2(33) | | 12.2SB | | SB10 | | | 12.2(33)SB10 | | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SBC | fixed in Release | fixed in Release | | | 12.2SB | 12.2SB | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SCA | fixed in Release | fixed in Release | | | 12.2SCC | 12.2SCC | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SCB | fixed in Release | fixed in Release | | | 12.2SCC | 12.2SCC | |------------+-----------------------+-----------------------| | 12.2SCC | 12.2(33)SCC7 | 12.2(33)SCC7 | |------------+-----------------------+-----------------------| | | 12.2(33)SCD6 | | | 12.2SCD | | 12.2(33)SCD6 | | | 12.2(33)SCD7 | | |------------+-----------------------+-----------------------| | | 12.2(33)SCE1 | 12.2(33)SCE112.2(33) | | 12.2SCE | | SCE2 | | | 12.2(33)SCE2 | | |------------+-----------------------+-----------------------| | 12.2SCF | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SE | Not vulnerable | 12.2(55)SE312.2(58)SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SEA | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SEB | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SEC | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SED | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SEE | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.2SEF | Not vulnerable | fixed in Release | | | | 12.2SE | |------------+-----------------------+-----------------------| | | | Releases prior to | | | | 12.2(25)SEG4 are | | | | vulnerable; Releases | | 12.2SEG | Not vulnerable | 12.2(25)SEG4 and | | | | later are not | | | | vulnerable. First | | | | fixed in Release | | | | 12.2EX | |------------+-----------------------+-----------------------| | | Releases prior to | Releases prior to | | | 12.2(40)SG are | 12.2(53)SG4 are | | 12.2SG | vulnerable; Releases | vulnerable; Releases | | | 12.2(40)SG and later | 12.2(53)SG4 and later | | | are not vulnerable. | 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 | Vulnerable; first | | 12.2SRA | fixed in Release | fixed in Release | | | 12.2SRD | 12.2SRD | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SRB | fixed in Release | fixed in Release | | | 12.2SRD | 12.2SRD | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SRC | fixed in Release | fixed in Release | | | 12.2SRD | 12.2SRD | |------------+-----------------------+-----------------------| | 12.2SRD | 12.2(33)SRD6 | 12.2(33)SRD6 | |------------+-----------------------+-----------------------| | 12.2SRE | 12.2(33)SRE3 | 12.2(33)SRE4 | |------------+-----------------------+-----------------------| | 12.2STE | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SU | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | Releases prior to | Releases prior to | | | 12.2(29a)SV are | 12.2(29a)SV are | | | vulnerable; Releases | vulnerable; Releases | | 12.2SV | 12.2(29a)SV and later | 12.2(29a)SV and later | | | are not vulnerable. | are not vulnerable. | | | Migrate to any | Migrate to any | | | release in 12.2SVD | release in 12.2SVD | |------------+-----------------------+-----------------------| | 12.2SVA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SVC | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SVD | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SVE | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Releases prior to | Vulnerable; contact | | | 12.2(25)SW12 are | your support | | | vulnerable; Releases | organization per the | | 12.2SW | 12.2(25)SW12 and | instructions in the | | | later are not | Obtaining Fixed | | | vulnerable. | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SX | fixed in Release | fixed in Release | | | 12.2SXF | 12.2SXF | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SXA | fixed in Release | fixed in Release | | | 12.2SXF | 12.2SXF | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SXB | fixed in Release | fixed in Release | | | 12.2SXF | 12.2SXF | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SXD | fixed in Release | fixed in Release | | | 12.2SXF | 12.2SXF | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SXE | fixed in Release | fixed in Release | | | 12.2SXF | 12.2SXF | |------------+-----------------------+-----------------------| | 12.2SXF | 12.2(18)SXF17b | 12.2(18)SXF17b | |------------+-----------------------+-----------------------| | 12.2SXH | 12.2(33)SXH8a | 12.2(33)SXH8a | |------------+-----------------------+-----------------------| | 12.2SXI | 12.2(33)SXI6 | 12.2(33)SXI6 | |------------+-----------------------+-----------------------| | 12.2SXJ | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2SY | 12.2(50)SY | 12.2(50)SY | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2SZ | fixed in Release | fixed in Release | | | 12.2SB | 12.2SB | |------------+-----------------------+-----------------------| | 12.2T | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2TPC | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | 12.2XA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2XB | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | 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 | |------------+-----------------------+-----------------------| | | Please see Cisco | Please see Cisco | | 12.2XNA | IOS-XE Software | IOS-XE Software | | | Availability | Availability | |------------+-----------------------+-----------------------| | | Please see Cisco | Please see Cisco | | 12.2XNB | IOS-XE Software | IOS-XE Software | | | Availability | Availability | |------------+-----------------------+-----------------------| | | Please see Cisco | Please see Cisco | | 12.2XNC | IOS-XE Software | IOS-XE Software | | | Availability | Availability | |------------+-----------------------+-----------------------| | | Please see Cisco | Please see Cisco | | 12.2XND | IOS-XE Software | IOS-XE Software | | | Availability | Availability | |------------+-----------------------+-----------------------| | | Please see Cisco | Please see Cisco | | 12.2XNE | IOS-XE Software | IOS-XE Software | | | Availability | Availability | |------------+-----------------------+-----------------------| | | Please see Cisco | Please see Cisco | | 12.2XNF | IOS-XE Software | IOS-XE Software | | | Availability | 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 | |------------+-----------------------+-----------------------| | | Releases prior to | | | | 12.2(4)YA8 are | | | | vulnerable; Releases | Vulnerable; first | | 12.2YA | 12.2(4)YA8 and later | fixed in Release 12.4 | | | are not 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 | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2YF | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.2YG | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2YH | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | Releases prior to | your support | | | 12.2(8)YJ1 are | organization per the | | 12.2YJ | vulnerable; Releases | instructions in the | | | 12.2(8)YJ1 and later | Obtaining Fixed | | | are not vulnerable. | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.2YK | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2YL | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | 12.2YM | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2YN | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | 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 | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2YS | 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 | | 12.2YT | 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 | | 12.2YU | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | Releases prior to | your support | | | 12.2(11)YV1 are | organization per the | | 12.2YV | vulnerable; Releases | instructions in the | | | 12.2(11)YV1 and later | Obtaining Fixed | | | are not vulnerable. | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2YW | 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 | | 12.2YX | 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 | | 12.2YY | 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 | | 12.2YZ | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2ZA | fixed in Release | fixed in Release | | | 12.2SXF | 12.2SXF | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2ZB | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | 12.2ZC | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2ZD | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.2ZE | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2ZF | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.2ZG | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Releases prior to | | | | 12.2(13)ZH6 are | | | | vulnerable; Releases | Vulnerable; first | | 12.2ZH | 12.2(13)ZH6 and later | fixed in Release 12.4 | | | are not vulnerable. | | | | First fixed in | | | | Release 12.4 | | |------------+-----------------------+-----------------------| | 12.2ZJ | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2ZL | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | 12.2ZP | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.2ZU | fixed in Release | fixed in Release | | | 12.2SXH | 12.2SXH | |------------+-----------------------+-----------------------| | 12.2ZX | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.2ZY | 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 | | 12.2ZYA | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | Affected | | First Fixed Release | | 12.3-Based | First Fixed Release | for All Advisories in | | Releases | | the September 2011 | | | | Bundled Publication | |------------+-----------------------+-----------------------| | 12.3 | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.3B | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.3BC | Not vulnerable | fixed in Release | | | | 12.2SCC | |------------+-----------------------+-----------------------| | 12.3BW | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.3JA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3JEA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3JEB | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3JEC | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3JED | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Releases up to and | Releases up to and | | | including 12.3(2)JK3 | including 12.3(2)JK3 | | | are not vulnerable. | are not vulnerable. | | 12.3JK | Releases 12.3(8)JK1 | Releases 12.3(8)JK1 | | | and later are not | and later are not | | | vulnerable. First | vulnerable. First | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.3JL | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3JX | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3T | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | Releases up to and | your support | | | including 12.3(4) | organization per the | | 12.3TPC | TPC11a are not | instructions in the | | | vulnerable. | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 12.3VA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Releases prior to | | | | 12.3(2)XA7 are | | | | vulnerable; Releases | Vulnerable; first | | 12.3XA | 12.3(2)XA7 and later | fixed in Release 12.4 | | | are not vulnerable. | | | | First fixed in | | | | Release 12.4 | | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.3XB | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | 12.3XC | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.3XD | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.3XE | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.3XF | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | 12.3XG | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.3XI | fixed in Release | fixed in Release | | | 12.2SB | 12.2SB | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.3XJ | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | 12.3XK | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.3XL | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | 12.3XQ | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.3XR | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.3XS | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.3XU | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.3XW | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | 12.3XX | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.3XY | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3XZ | Vulnerable; first | Vulnerable; first | | | fixed in Release 12.4 | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.3YA | Not vulnerable | Vulnerable; first | | | | fixed in Release 12.4 | |------------+-----------------------+-----------------------| | 12.3YD | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3YF | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3YG | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3YH | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3YI | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.3YJ | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | 12.3YK | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.3YM | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.3YQ | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | | Vulnerable; first | | | | fixed in Release | | | | 12.4T | Vulnerable; first | | 12.3YS | | fixed in Release | | | Releases up to and | 12.4T | | | including 12.3(11)YS1 | | | | are not vulnerable. | | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.3YT | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.3YU | fixed in Release | fixed in Release | | | 12.4XB | 12.4XB | |------------+-----------------------+-----------------------| | | Vulnerable; migrate | Vulnerable; first | | 12.3YX | to any release in | fixed in Release | | | 12.4XR | 12.4T | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.3YZ | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.3ZA | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | Affected | | First Fixed Release | | 12.4-Based | First Fixed Release | for All Advisories in | | Releases | | the September 2011 | | | | Bundled Publication | |------------+-----------------------+-----------------------| | 12.4 | 12.4(25e) | 12.4(25f) | |------------+-----------------------+-----------------------| | 12.4GC | 12.4(24)GC4 | 12.4(24)GC4 | |------------+-----------------------+-----------------------| | 12.4JA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4JAX | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4JDA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4JDC | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4JHA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4JHB | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4JHC | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4JK | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4JL | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4JMA | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4JMB | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; migrate | | | | to any release in | | | | 12.4JA | | 12.4JX | Not vulnerable | | | | | Releases up to and | | | | including 12.4(21a)JX | | | | are not vulnerable. | |------------+-----------------------+-----------------------| | 12.4JY | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4MD | Not vulnerable | 12.4(24)MD6 on | | | | 28-Oct-2011 | |------------+-----------------------+-----------------------| | 12.4MDA | Not vulnerable | 12.4(24)MDA7 | |------------+-----------------------+-----------------------| | 12.4MDB | Not vulnerable | 12.4(24)MDB3 | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.4MR | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.4MRA | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.4MRB | Not vulnerable | fixed in Release | | | | 12.4T | |------------+-----------------------+-----------------------| | 12.4SW | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | 12.4(15)T15 | 12.4(15)T16 | | 12.4T | | | | | 12.4(24)T5 | 12.4(24)T6 | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.4XA | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | 12.4XB | 12.4(2)XB12 | 12.4(2)XB12 | |------------+-----------------------+-----------------------| | 12.4XC | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.4XD | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | 12.4XE | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.4XF | Not vulnerable | fixed in Release | | | | 12.4T | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.4XG | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | 12.4XJ | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | 12.4XK | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.4XL | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | | Releases up to and | | | | including 12.4(15)XM | | | | are not vulnerable. | | | | | Vulnerable; first | | 12.4XM | Releases 12.4(15)XM3 | fixed in Release | | | and later are not | 12.4T | | | vulnerable. First | | | | fixed in Release | | | | 12.4T | | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.4XN | 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 | | 12.4XP | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.4XQ | Not vulnerable | fixed in Release | | | | 12.4T | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 12.4XR | Not vulnerable | fixed in Release | | | | 12.4T | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.4XT | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | 12.4XV | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.4XW | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.4XY | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.4XZ | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 12.4YA | fixed in Release | fixed in Release | | | 12.4T | 12.4T | |------------+-----------------------+-----------------------| | | Vulnerable; contact | Vulnerable; contact | | | your support | your support | | | organization per the | organization per the | | 12.4YB | instructions in the | instructions in the | | | Obtaining Fixed | Obtaining Fixed | | | Software section of | Software section of | | | this advisory. | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.4YD | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; fixed in | | | | 12.4(22)YE6 on | | 12.4YE | Not vulnerable | 30-Sept-2011; 12.4 | | | | (24)YE7 available on | | | | 17-Oct-2011 | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 12.4YG | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | Affected | | First Fixed Release | | 15.0-Based | First Fixed Release | for All Advisories in | | Releases | | the September 2011 | | | | Bundled Publication | |------------+-----------------------+-----------------------| | | 15.0(1)M4 | | | 15.0M | | 15.0(1)M7 | | | 15.0(1)M5a | | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 15.0MR | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 15.0MRA | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | 15.0(1)S3a | | | | | 15.0(1)S4 | | | 15.0(1)S4 | | | 15.0S | | Cisco IOS XE devices: | | | Cisco IOS XE devices: | Please see Cisco | | | Please see Cisco | IOS-XE Software | | | IOS-XE Software | Availability | | | Availability | | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 15.0SA | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | 15.0SE | Not vulnerable | Not vulnerable | |------------+-----------------------+-----------------------| | | Cisco IOS XE devices: | Cisco IOS XE devices: | | 15.0SG | Please see Cisco | Please see Cisco | | | IOS-XE Software | IOS-XE Software | | | Availability | Availability | |------------+-----------------------+-----------------------| | | Vulnerable; first | Vulnerable; first | | 15.0XA | fixed in Release | fixed in Release | | | 15.1T | 15.1T | |------------+-----------------------+-----------------------| | | Cisco IOS XE devices: | Cisco IOS XE devices: | | 15.0XO | Please see Cisco | Please see Cisco | | | IOS-XE Software | IOS-XE Software | | | Availability | Availability | |------------+-----------------------+-----------------------| | Affected | | First Fixed Release | | 15.1-Based | First Fixed Release | for All Advisories in | | Releases | | the September 2011 | | | | Bundled Publication | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 15.1EY | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | | Vulnerable; first | | 15.1GC | Not vulnerable | fixed in Release | | | | 15.1T | |------------+-----------------------+-----------------------| | 15.1M | Not vulnerable | 15.1(4)M2; Available | | | | on 30-SEP-11 | |------------+-----------------------+-----------------------| | | | Vulnerable; contact | | | | your support | | | | organization per the | | 15.1MR | Not vulnerable | instructions in the | | | | Obtaining Fixed | | | | Software section of | | | | this advisory. | |------------+-----------------------+-----------------------| | | 15.1(1)S1 | 15.1(2)S2 | | | | | | | 15.1(2)S | 15.1(3)S | | 15.1S | | | | | Cisco IOS XE devices: | Cisco IOS XE devices: | | | Please see Cisco | Please see Cisco | | | IOS-XE Software | IOS-XE Software | | | Availability | Availability | |------------+-----------------------+-----------------------| | | 15.1(1)T3 | | | | | | | | 15.1(2)T2 | 15.1(2)T4 15.1(1)T4 | | 15.1T | | on 8-Dec-2011 | | | 15.1(2)T2a | | | | | | | | 15.1(3)T | | |------------+-----------------------+-----------------------| | | 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 | | 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 | First Fixed Release for All | | IOS XE | Fixed | Advisories in the September 2011 | | Release | Release | Bundled Publication | |----------+------------+------------------------------------| | 2.1.x | Not | Vulnerable; migrate to 3.3.2S or | | | vulnerable | later | |----------+------------+------------------------------------| | 2.2.x | Not | Vulnerable; migrate to 3.3.2S or | | | vulnerable | later | |----------+------------+------------------------------------| | 2.3.x | Not | Vulnerable; migrate to 3.3.2S or | | | vulnerable | later | |----------+------------+------------------------------------| | 2.4.x | Not | Vulnerable; migrate to 3.3.2S or | | | vulnerable | later | |----------+------------+------------------------------------| | 2.5.x | Not | Vulnerable; migrate to 3.3.2S or | | | vulnerable | later | |----------+------------+------------------------------------| | 2.6.x | Not | Vulnerable; migrate to 3.3.2S or | | | vulnerable | later | |----------+------------+------------------------------------| | 3.1.xS | 3.1.3S | Vulnerable; migrate to 3.3.2S or | | | | later | |----------+------------+------------------------------------| | 3.1.xSG | Not | Vulnerable; migrate to 3.2.0SG or | | | vulnerable | later | |----------+------------+------------------------------------| | 3.2.xS | 3.2.1S | Vulnerable; migrate to 3.3.2S or | | | | later | |----------+------------+------------------------------------| | 3.2.xSG | Not | Not vulnerable | | | vulnerable | | |----------+------------+------------------------------------| | 3.3.xS | Not | 3.3.2S | | | vulnerable | | |----------+------------+------------------------------------| | 3.4.xS | Not | Not vulnerable | | | vulnerable | | +------------------------------------------------------------+ For mapping of Cisco IOS XE to Cisco IOS releases, please refer to the Cisco IOS XE 2 Release Notes, Cisco IOS XE 3S Release Notes, and Cisco IOS XE 3SG Release Notes. Cisco IOS XR Software +-------------------- Cisco IOS XR Software is not affected by any of the vulnerabilities in the September 2011 bundled publication. Workarounds =========== This vulnerability can be mitigated by using Control Plane Policing (CoPP) to only allow IP Protocol 91 packets sent by valid peers. Mitigation techniques that can be deployed on Cisco devices within the network are available in the Cisco Applied Mitigation Bulletin companion document for this advisory: http://www.cisco.com/warp/public/707/cisco-amb-20110928-dlsw.shtml Control Plane Policing +--------------------- Control Plane Policing (CoPP) can be used to block untrusted IP Protocol 91 packets sent to the affected device. CoPP may be configured on a device to protect the management and control planes to minimize the risk and effectiveness of direct infrastructure attacks by explicitly permitting, and if configured, rate-limiting only authorized traffic that is sent to infrastructure devices in accordance with existing security policies and configurations. The following example, which uses 192.168.100.1 to represent a trusted host, can be adapted to your network. !-- Deny FST traffic on IP protocol 91 from trusted !-- hosts to all IP addresses configured on all interfaces of the affected device !-- so that it will be allowed by the CoPP feature access-list 111 deny 91 host 192.168.100.1 any !-- Permit all other FST traffic on IP protocol 91 !-- sent to all IP addresses configured on all interfaces of the affected !-- device so that it will be policed and dropped by the CoPP feature access-list 111 permit 91 any any !-- Permit (Police or Drop)/Deny (Allow) all other Layer3 !-- and Layer4 traffic in accordance with existing security !-- policies and configurations for traffic that is authorized !-- to be sent to infrastructure devices !-- Create a Class-Map for traffic to be policed by !-- the CoPP feature class-map match-all drop-fst-91-class match access-group 111 !-- Create a Policy-Map that will be applied to the !-- Control-Plane of the device. policy-map input-CoPP-policy class drop-fst-91-class drop !-- Apply the Policy-Map to the Control-Plane of the !-- device control-plane service-policy input input-CoPP-policy In the above CoPP example, the access control list entries (ACEs) that match the potential exploit packets with the "permit" action result in these packets being discarded by the policy map "drop" function, while packets that match the deny action (not shown) are not affected by the policy-map drop function. Note that in the 12.2S and 12.0S Cisco IOS trains the policy-map syntax is different, as shown in the following example: policy-map input-CoPP-policy class drop-fst-91-class police 32000 1500 1500 conform-action drop exceed-action drop Additional information on the CoPP feature is available at: Control Plane Policing Implementation Best Practices. 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 vulnerability described in this advisory. This vulnerability was discovered during Cisco internal testing. Status of this Notice: FINAL ============================ THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors. Distribution ============ This advisory is posted on Cisco's worldwide website at: http://www.cisco.com/warp/public/707/cisco-sa-20110323-dlsw.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. +-------------------------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iF4EAREIAAYFAk6Cp2EACgkQQXnnBKKRMNDlUwD/RunFKu5OItJXD8gTi5PtkxMz CoIx3+/EIJjznWKJnBoA/3bh8zYaW5Et3pvnmF9Hm2nImvFT1jMZOIv1zWfAMsXX =oqzZ -----END PGP SIGNATURE----- . ---------------------------------------------------------------------- Ovum says ad hoc tools are out-dated. The best practice approach? Fast vulnerability intelligence, threat handling, and setup in one tool. Read the new report on the Secunia VIM: http://secunia.com/products/corporate/vim/ovum_2011_request/ ---------------------------------------------------------------------- TITLE: Cisco IOS Data-Link Switching Denial of Service Vulnerability SECUNIA ADVISORY ID: SA46189 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/46189/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=46189 RELEASE DATE: 2011-10-31 DISCUSS ADVISORY: http://secunia.com/advisories/46189/#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/46189/ 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=46189 ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/ DESCRIPTION: A vulnerability has 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 vendor. ORIGINAL ADVISORY: http://www.cisco.com/warp/public/707/cisco-sa-20110928-dlsw.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. 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AFFECTED PRODUCTS