AV:N/AC:L/Au:N/C:N/I:N/A:C/E:F/RL:OF/RC:C
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Cisco IOS Software contains a memory leak vulnerability in the Data-Link Switching (DLSw) feature that could result in a device reload when processing crafted IP Protocol 91 packets.
Cisco has released software updates that address this vulnerability.
This advisory is posted at https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110928-dlsw.
Note: The September 28, 2011, Cisco IOS Software Security Advisory bundled publication includes ten Cisco Security Advisories. Nine of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses a vulnerability in Cisco Unified Communications Manager. 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
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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 these vulnerabilities.
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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.
This vulnerability is documented in Cisco bug ID CSCth69364 (registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2011-0945.
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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: https://sec.cloudapps.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20110928-dlsw.
Control Plane Policing
Control Plane Policing (CoPP) can be used to block untrusted IP Protocol 91 packets sent to the affected device. Cisco IOS Software Releases 12.0S, 12.2SX, 12.2S, 12.3T, 12.4, and 12.4T support the CoPP feature. 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
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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 Cisco Security (SIO) portal at https://sec.cloudapps.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 Release
Availability of Repaired Releases
Affected 12.0-Based Releases
First Fixed Release
First Fixed Release for All Advisories in the September 2011 Bundled Publication
There are no affected 12.0-based releases
Affected 12.1-Based Releases
First Fixed Release
First Fixed Release for All Advisories in the September 2011 Bundled Publication
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
Affected 12.2-Based Releases
First Fixed Release
First Fixed Release for All Advisories in the September 2011 Bundled Publication
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Releases up to and including 12.2(2)B7 are not vulnerable.
Vulnerable; first fixed in Release 12.4
Not vulnerable
Vulnerable; first fixed in Release 12.4
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.2SB
Releases up to and including 12.2(15)BX are not vulnerable.
Vulnerable; first fixed in Release 12.2SB
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.2SB
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Releases up to and including 12.2(20)EW4 are not vulnerable.
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
12.2(55)EX3
Not vulnerable
12.2(58)EY
Not vulnerable
Vulnerable; migrate to any release in 15.0SE
Not vulnerable
Vulnerable; first fixed in Release 12.2SE
Not vulnerable
Vulnerable; first fixed in Release 12.2EX
Not vulnerable
Vulnerable; first fixed in Release 12.2SE
Vulnerable; migrate to any release in 12.2IRG
Vulnerable; migrate to any release in 12.2IRG
Vulnerable; migrate to any release in 12.2IRG
Vulnerable; migrate to any release in 12.2IRG
Vulnerable; migrate to any release in 12.2IRG
Vulnerable; migrate to any release in 12.2IRG
12.2(33)IRD1
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
12.2(33)IRE3
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; migrate to any release in 12.2IRG
Vulnerable; migrate to any release in 12.2IRG
Not vulnerable
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Not vulnerable
Vulnerable; first fixed in Release 12.2SRD
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Releases prior to 12.2(30)S are vulnerable; Releases 12.2(30)S and later are not vulnerable. First fixed in Release 12.2SB
Releases prior to 12.2(30)S are vulnerable; Releases 12.2(30)S and later are not vulnerable. First fixed in Release 12.2SB
12.2(31)SB20
12.2(33)SB10
12.2(31)SB20
12.2(33)SB10
Vulnerable; first fixed in Release 12.2SB
Vulnerable; first fixed in Release 12.2SB
Vulnerable; first fixed in Release 12.2SCC
Vulnerable; first fixed in Release 12.2SCC
Vulnerable; first fixed in Release 12.2SCC
Vulnerable; first fixed in Release 12.2SCC
12.2(33)SCC7
12.2(33)SCC7
12.2(33)SCD6
12.2(33)SCD7
12.2(33)SCD6
12.2(33)SCE1
12.2(33)SCE2
12.2(33)SCE112.2(33)SCE2
Not vulnerable
Not vulnerable
Not vulnerable
12.2(55)SE312.2(58)SE
Not vulnerable
Vulnerable; first fixed in Release 12.2SE
Not vulnerable
Vulnerable; first fixed in Release 12.2SE
Not vulnerable
Vulnerable; first fixed in Release 12.2SE
Not vulnerable
Vulnerable; first fixed in Release 12.2SE
Not vulnerable
Vulnerable; first fixed in Release 12.2SE
Not vulnerable
Vulnerable; first fixed in Release 12.2SE
Not vulnerable
Releases prior to 12.2(25)SEG4 are vulnerable; Releases 12.2(25)SEG4 and later are not vulnerable. First fixed in Release 12.2EX
Releases prior to 12.2(40)SG are vulnerable; Releases 12.2(40)SG and later are not vulnerable.
Releases prior to 12.2(53)SG4 are vulnerable; Releases 12.2(53)SG4 and later are not vulnerable.
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Not vulnerable
Not vulnerable
12.2(50)SQ3
Vulnerable; first fixed in Release 12.2SRD
Vulnerable; first fixed in Release 12.2SRD
Vulnerable; first fixed in Release 12.2SRD
Vulnerable; first fixed in Release 12.2SRD
Vulnerable; first fixed in Release 12.2SRD
Vulnerable; first fixed in Release 12.2SRD
12.2(33)SRD6
12.2(33)SRD6
12.2(33)SRE3
12.2(33)SRE4
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Releases prior to 12.2(29a)SV are vulnerable; Releases 12.2(29a)SV and later are not vulnerable. Migrate to any release in 12.2SVD
Releases prior to 12.2(29a)SV are vulnerable; Releases 12.2(29a)SV and later are not vulnerable. Migrate to any release in 12.2SVD
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Releases prior to 12.2(25)SW12 are vulnerable; Releases 12.2(25)SW12 and later are not vulnerable.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
12.2(18)SXF17b
12.2(18)SXF17b
12.2(33)SXH8a
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
12.2(33)SXI6
12.2(33)SXI6
Not vulnerable
12.2(33)SXJ1
12.2(50)SY
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; first fixed in Release 12.2SB
Vulnerable; first fixed in Release 12.2SB
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Please see Cisco IOS-XE Software Availability
Not vulnerable
Releases prior to 12.2(54)XO are vulnerable; Releases 12.2(54)XO and later are not vulnerable.
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Releases prior to 12.2(4)YA8 are vulnerable; Releases 12.2(4)YA8 and later are not vulnerable. First fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Releases prior to 12.2(8)YJ1 are vulnerable; Releases 12.2(8)YJ1 and later are not vulnerable.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Releases prior to 12.2(11)YV1 are vulnerable; Releases 12.2(11)YV1 and later are not vulnerable.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; first fixed in Release 12.2SXF
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Not vulnerable
Not vulnerable
Releases prior to 12.2(13)ZH6 are vulnerable; Releases 12.2(13)ZH6 and later are not vulnerable. First fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Not vulnerable
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.2SXH
Vulnerable; first fixed in Release 12.2SXH
Not vulnerable
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Affected 12.3-Based Releases
First Fixed Release
First Fixed Release for All Advisories in the September 2011 Bundled Publication
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Not vulnerable
Vulnerable; first fixed in Release 12.2SCC
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Releases up to and including 12.3(2)JK3 are not vulnerable. Releases 12.3(8)JK1 and later are not vulnerable. First fixed in Release 12.4
Releases up to and including 12.3(2)JK3 are not vulnerable. Releases 12.3(8)JK1 and later are not vulnerable. First fixed in Release 12.4
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Releases up to and including 12.3(4)TPC11a are not vulnerable.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Not vulnerable
Releases prior to 12.3(2)XA7 are vulnerable; Releases 12.3(2)XA7 and later are not vulnerable. First fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.2SB
Vulnerable; first fixed in Release 12.2SB
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Not vulnerable
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4
Vulnerable; first fixed in Release 12.4
Not vulnerable
Vulnerable; first fixed in Release 12.4
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Releases up to and including 12.3(11)YS1 are not vulnerable.
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4XB
Vulnerable; first fixed in Release 12.4XB
Vulnerable; migrate to any release in 12.4XR
Vulnerable; first fixed in Release 12.4T
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Affected 12.4-Based Releases
First Fixed Release
First Fixed Release for All Advisories in the September 2011 Bundled Publication
12.4(25e)
12.4(25f)
12.4(24)GC4
12.4(24)GC4
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; migrate to any release in 12.4JA
Releases up to and including 12.4(21a)JX are not vulnerable.
Not vulnerable
Not vulnerable
Not vulnerable
12.4(24)MD6 on 28-Oct-2011
Not vulnerable
12.4(24)MDA7
Not vulnerable
12.4(24)MDB3
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Vulnerable; first fixed in Release 12.4T
Not vulnerable
Not vulnerable
12.4(15)T15
12.4(24)T5
12.4(15)T16
12.4(24)T6
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
12.4(2)XB12
12.4(2)XB12
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Not vulnerable
Not vulnerable
Not vulnerable
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Releases up to and including 12.4(15)XM are not vulnerable.
Releases 12.4(15)XM3 and later are not vulnerable. First fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Vulnerable; first fixed in Release 12.4T
Not vulnerable
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Not vulnerable
Not vulnerable
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; first fixed in Release 12.4T
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Vulnerable; fixed in 12.4(22)YE6 on 30-Sept-2011; 12.4(24)YE7 available on 17-Oct-2011
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Affected 15.0-Based Releases
First Fixed Release
First Fixed Release for All Advisories in the September 2011 Bundled Publication
15.0(1)M4
15.0(1)M5a
15.0(1)M7
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
15.0(1)S3a
15.0(1)S4
Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
15.0(1)S4
Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Not vulnerable
Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
Vulnerable; first fixed in Release 15.1T
Vulnerable; first fixed in Release 15.1T
Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
Affected 15.1-Based Releases
First Fixed Release
First Fixed Release for All Advisories in the September 2011 Bundled Publication
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
Not vulnerable
Vulnerable; first fixed in Release 15.1T
Not vulnerable
15.1(4)M2; Available on 30-SEP-11
Not vulnerable
Vulnerable; contact your support organization per the instructions in the Obtaining Fixed Software section of this advisory.
15.1(1)S1
15.1(2)S
Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
15.1(2)S2
15.1(3)S
Cisco IOS XE devices: Please see Cisco IOS-XE Software Availability
15.1(1)T3
15.1(2)T2
15.1(3)T
15.1(1)T4 on 09-DEC-2011
15.1(2)T4
15.1(3)T2
Vulnerable; first fixed in Release 15.1T
Vulnerable; first fixed in Release 15.1T
Affected 15.2-Based Releases
First Fixed Release
First Fixed Release for All Advisories in the 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 IOS XE Release
First Fixed Release
First Fixed Release for All Advisories in the September 2011 Bundled Publication
2.1.x
Not vulnerable
Vulnerable; migrate to 3.3.2S or later
2.2.x
Not vulnerable
Vulnerable; migrate to 3.3.2S or later
2.3.x
Not vulnerable
Vulnerable; migrate to 3.3.2S or later
2.4.x
Not vulnerable
Vulnerable; migrate to 3.3.2S or later
2.5.x
Not vulnerable
Vulnerable; migrate to 3.3.2S or later
2.6.x
Not vulnerable
Vulnerable; migrate to 3.3.2S or later
3.1.xS
3.1.3S
Vulnerable; migrate to 3.3.2S or later
3.1.xSG
Not vulnerable
Vulnerable; migrate to 3.2.0SG or later
3.2.xS
3.2.1S
Vulnerable; migrate to 3.3.2S or later
3.2.xSG
Not vulnerable
Not vulnerable
3.3.xS
Not vulnerable
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 any of the vulnerabilities in the September 2011 bundled publication.
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The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory.
This vulnerability was reported to Cisco by {insert info here}.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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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 is an uncontrolled copy, and may lack important information or contain factual errors. The information in this document is intended for end-users of Cisco products.