Cisco Security Advisory
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AV:R/AC:L/Au:NR/C:C/I:C/A:C/B:N/E:F/RL:O/RC:C
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Multiple voice-related vulnerabilities are identified in Cisco IOS software, one of which is also shared with Cisco Unified Communications Manager. These vulnerabilities pertain to the following protocols or features:
- Session Initiation Protocol (SIP)
- Media Gateway Control Protocol (MGCP)
- Signaling protocols H.323, H.254
- Real-time Transport Protocol (RTP)
- Facsimile reception
Cisco has made free software available to address these vulnerabilities for affected customers. Fixed Cisco IOS software listed in the Software Versions and Fixes section contains fixes for all vulnerabilities mentioned in this advisory.
There are no workarounds available to mitigate the effects of any of the vulnerabilities apart from disabling the protocol or feature itself.
This advisory is posted at https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20070808-IOS-voice.
Note: The August 08, 2007 publication includes four Security Advisories and one Security Response. The advisories all affect IOS, one additionally affects Cisco Unified Communications Manager as well. Each advisory lists the releases that correct the vulnerability described in the advisory, and the advisories also detail the releases that correct the vulnerabilities in all four advisories. Individual publication links are listed below:-
Cisco IOS Information Leakage Using IPv6 Routing Header
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20070808-IOS-IPv6-leak -
Cisco IOS Next Hop Resolution Protocol Vulnerability
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20070808-nhrp -
Cisco IOS Secure Copy Authorization Bypass Vulnerability
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20070808-scp -
Voice Vulnerabilities in Cisco IOS and Cisco Unified Communications
Manager
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20070808-IOS-voice -
Cisco Unified MeetingPlace XSS Vulnerability
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityResponse/cisco-sr-20070808-mp
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These vulnerabilities only affect devices running Cisco IOS that have voice services enabled. The only exception is the vulnerability documented as Cisco bug ID CSCsi80102 ( registered customers only) , which also exists on Cisco Unified Communications Manager.
Vulnerable Products
To determine the software running on a Cisco IOS product, log in to the device and issue the show version command to display the system banner. Cisco IOS software will identify itself as "Internetwork Operating System Software" or simply "IOS." On the next line of output, the image name will be displayed between parentheses, followed by "Version" and the Cisco IOS release name. Other Cisco devices will not have the show version command, or will give different output.
The following example shows output from a device running an IOS image:
Router>show version Cisco IOS Software, 7200 Software (C7200-IK9S-M), Version 12.3(14)T1, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2005 by Cisco Systems, Inc. Compiled Thu 31-Mar-05 08:04 by yiyan
Additional information about Cisco IOS release naming is available at the following link: http://www.cisco.com/web/about/security/intelligence/ios-ref.html.
SIP-related vulnerabilities
Any Cisco device that runs a vulnerable version of IOS and supports SIP processing could be vulnerable. This includes multiple IOS versions of 12.2, 12.3 and 12.4. Routers that are configured as SIP Public Switched Telephone Network (PSTN) Gateways and SIP Session Border Controllers (SBCs) are vulnerable. The CAT6000-CMM card is also vulnerable.
To determine if the device has SIP enabled, enter the commands show ip sockets and show tcp brief all. In some newer IOS releases the command show ip sockets is removed. If that is the case use show udp. The output is identical to the show ip sockets command.
Router#show ip sockets Proto Remote Port Local Port In Out Stat TTY OutputIF 17 0.0.0.0 0 --any-- 5060 0 0 211 0 17 0.0.0.0 0 192.168.100.2 67 0 0 2211 0 17 0.0.0.0 0 192.168.100.2 2517 0 0 11 0
The first line with UDP Port 5060 shows that UDP SIP is enabled.
Router#show tcp brief all TCB Local Address Foreign Address (state) 2051E680 *.5060 *.* LISTEN
The above lines with *.5060 show that TCP SIP is enabled.
The device is vulnerable even if it does not have SIP explicitly configured. If the output of the show ip sockets command is showing that the device is listening to port 5060, then the device is vulnerable.
MGCP-related vulnerabilities
To determine whether MGCP is configured on an IOS device, look for either of the following lines in in the Cisco IOS configuration:
Router#show running config .... voice-port 1/1/1 ! mgcp ! dial-peer voice 1 pots service mgcpapp port 1/1/1
or
Router#show running config .... controller T1 1/1 framing sf linecode ami pri-group timeslots 1-24 service mgcp
or
Router#show running config .... controller T1 1/1 framing sf linecode ami ds0-group 0 timeslots 1-24 type none service mgcp
The exact port numbers may vary in the configuration.
H.323 signaling-related vulnerabilities
To determine whether H.323 is configured on an IOS device, look for either of the following lines in the Cisco IOS configuration.
For Cisco bug ID CSCsi60004 ( registered customers only) this configuration is vulnerable:
Router#show running config | include proxy proxy h323
For Cisco bug ID CSCsg70474 ( registered customers only) this configuration is vulnerable:
Router#show running config | include inspect ip inspect name H323_protocol h323 ip inspect H323_protocol in
Real-time Transport Protocol-related vulnerabilities
No particular configuration is required to enable RTP because this protocol is invoked when audio or video information is transmitted. H.323, MGCP, SIP, or H.320 protocols must be processing packets for a router to process RTP packets.
Note: These vulnerabilities only affect sessions terminating or originating on a device itself, not transit traffic; for example, traffic that passes through a device, but is destined elsewhere is not affected.
Facsimile reception vulnerability
The IOS device will listen to incoming facsimile transmission by default if the Digital Signal Processor (DSP) is present. To determine the presence of DSP on a device, execute the following command:
Note: This vulnerability only affects sessions terminating or originating on a device itself, not transit traffic; for example, traffic that passes through a device, but is destined elsewhere is not affected.
Router#show voice dsp DSP DSP DSPWARE CURR BOOT PAK TX/RX TYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABORT PACK COUNT ==== === == ======== ======= ===== ======= === == ========= == ===== ============ C542 001 01 None 7.4.1 IDLE idle 0 0 1/1/0 NA 0 598/607 C542 002 01 None 7.4.1 IDLE idle 0 0 1/1/1 NA 0 591/588
The above example shows that DSP is present on the device.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities. The following devices are known not to be affected:
- Cisco Unified Communications Manager (with the exception of CSCsi80102 (registered customers only) )
- Cisco IP Phone
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Details for vulnerabilities are grouped by category and impact.
SIP-related vulnerabilities
SIP is a protocol that is used to establish, modify, and terminate multimedia sessions. Most commonly, SIP is used for Internet telephony. SIP call signaling can use UDP (User Datagram Protocol) or TCP (Transport Control Protocol) as an underlying transport protocol. In all cases vulnerabilities can be triggered by processing a malformed SIP packet.
A malformed SIP packet may cause a vulnerable device to crash and may allow arbitrary code to be executed. These vulnerabilities are documented as the following Cisco Bug IDs:
- CSCsi80749 Crash while processing malformed SIP packet (registered customers only)
- CSCsi80102 CUCM - Crash while processing malformed SIP packet (registered customers only)
A malformed SIP packet may cause a memory leak and device crash. These vulnerabilities are documented as the following Cisco Bug IDs:
- CSCsf11855 Crash while processing malformed SIP packet (registered customers only)
- CSCeb21064 Crash while processing malformed SIP packet (registered customers only)
- CSCse40276 Router crashed by malformed SIP message (registered customers only)
- CSCse68355 Router crashed by malformed SIP packet (registered customers only)
- CSCsf30058 Memory leak when processing malformed SIP message (registered customers only)
- CSCsb24007 Memory corruption and unexpected reload on receiving a SIP packet (registered customers only)
- CSCsc60249 Crash while processing malformed SIP packet (registered customers only)
MGCP-related vulnerabilities
MGCP is a protocol for controlling media gateways from external call control elements such as Media Gateway Controllers or Call Agents. A media gateway is typically a network element that provides conversion between the audio signals carried on telephone circuits and data packets carried over the Internet or over other packet networks. In a Cisco environment, a media gateway is used between the Cisco Communications Manager and the Cisco router and servers as a voice gateway.
A specially crafted MGCP packet can cause a vulnerable device to crash or become unresponsive. The unresponsive device will not be able to establish new telephone calls, and a reboot is required to restore normal operation. These vulnerabilities are documented as the following Cisco Bug IDs:
- CSCsf08998 MGCP stop responding after receiving malformed packet (registered customers only)
- CSCsd81407 Router crash on receiving abnormal MGCP messages (registered customers only)
H.323-signaling related vulnerabilities
H.323 is an ITU (International Telecommunications Union) set of recommendations for multimedia communication and signaling in networks that use Internet Protocol.
A malformed H.323 packet can crash a vulnerable device. These vulnerabilities are documented as the following Cisco Bug IDs:
- CSCsi60004 H323 Proxy Unregistration from Gatekeeper (registered customers only)
- CSCsg70474 IOS FW with h323 inspect crashes when malformed H.323 packets received (registered customers only)
Real-time Transport Protocol-related vulnerabilities
RTP is a protocol that is designed to provide delivery services for data with real-time characteristics, such as interactive audio and video.
A malformed RTP packet can cause a vulnerable device to crash. These vulnerabilities are documented as the following Cisco Bug IDs:
- CSCse68138 Issue in handling specific packets in VOIP RTP Lib (registered customers only)
- CSCse05642 I/O memory corruption crash on a router (registered customers only)
Facsimile reception vulnerability
Reception of a large packet can cause a vulnerable device to crash. This vulnerability is documented as the following Cisco Bug ID:
- CSCej20505 Router hangs with overly large packet (registered customers only)
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None of the listed vulnerabilities have workarounds. Users are advised to apply mitigation techniques to limit exposure to the listed vulnerabilities. Mitigation consists of only allowing legitimate devices to connect to the routers. To increase effectiveness, the mitigation must be coupled with the application of anti-spoofing measures on the network edge. This action is required because all vulnerable voice protocols can use UDP as transport protocol.
None of the listed vulnerabilities can be mitigated on Cisco Unified Communications Manager. All mitigations must be done on adjacent devices.
Users are advised to disable affected protocols if not required for normal device operation. To prevent the router from processing SIP packets, the user must execute the following commands:
Router(config)#sip-ua Router(config-sip-ua)#no transport udp Router(config-sip-ua)#no transport tcp Router(config-sip-ua)#end
Note: When applying this workaround to devices that are processing MGCP or H.323 calls, the device will not allow SIP processing to stop while active calls are being processed. As a result, the workaround should be implemented during a maintenance period when active calls can be stopped.
Infrastructure Access Control Lists (iACL)
Although difficult to block traffic from transiting the network, it is possible to identify traffic that should not target infrastructure devices and block such traffic at the network border. Infrastructure ACLs are considered a network security best practice and should be considered as a long-term addition to good network security as well as a workaround for this specific vulnerability. The ACL example shown below should be included as part of the deployed infrastructure access list that will protect all devices with IP addresses located within the infrastructure IP address range.
A sample access list for devices running Cisco IOS is below:
!-- Permit SIP, MGCP, H.323 and RTP services from trusted hosts destined !-- to infrastructure addresses. access-list 150 permit tcp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK eq 5060 access-list 150 permit tcp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK eq 5061 access-list 150 permit udp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK eq 5060 access-list 150 permit udp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK eq 5061 access-list 150 permit udp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK eq 2427 access-list 150 permit tcp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK eq 1720 access-list 150 permit tcp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK eq 11720 access-list 150 permit udp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK eq 2517 access-list 150 permit udp TRUSTED_HOSTS MASK INFRASTRUCTURE_ADDRESSES MASK range 16384 32767 !-- Deny SIP, MGCP, H.323 and RTP packets from all other sources destined !-- to infrastructure addresses. access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES MASK eq 5060 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES MASK eq 5061 access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES MASK eq 5060 access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES MASK eq 5061 access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES MASK eq 2427 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES MASK eq 1720 access-list 150 deny tcp any INFRASTRUCTURE_ADDRESSES MASK eq 11720 access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES MASK eq 2517 access-list 150 deny udp any INFRASTRUCTURE_ADDRESSES MASK range 16384 32767 !-- Permit all other traffic to transit the device. access-list 150 permit ip any any interface serial 2/0 ip access-group 150 in
The white paper entitled "Protecting Your Core: Infrastructure Protection Access Control Lists" presents guidelines and recommended deployment techniques for infrastructure protection access lists. This white paper can be obtained at the following link: http://www.cisco.com/warp/public/707/iacl.html.
Control Plane Policing
Control Plane Policing (CoPP) can be used to block untrusted SIP (TCP and UDP ports 5060 and 5061), MGCP (UDP port 2427), H.323 (TCP ports 1720 and 11720 and UDP port 2517), and RTP (UDP ports 16384 to 32767) access to the 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. CoPP protects the management and control planes by explicitly permitting only authorized traffic sent to infrastructure devices and 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 the network:
!-- Deny SIP, MGCP, H.323 and RTP traffic 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 tcp host 192.168.100.1 any eq 5060 access-list 111 deny tcp host 192.168.100.1 any eq 5061 access-list 111 deny udp host 192.168.100.1 any eq 5060 access-list 111 deny udp host 192.168.100.1 any eq 5061 access-list 111 deny udp host 192.168.100.1 any eq 2427 access-list 111 deny tcp host 192.168.100.1 any eq 1720 access-list 111 deny tcp host 192.168.100.1 any eq 11720 access-list 111 deny udp host 192.168.100.1 any eq 2517 access-list 111 deny udp host 192.168.100.1 any range 16384 32767 !-- Permit all other SIP, MGCP, H.323 and RTP traffic 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 tcp any any eq 5060 access-list 111 permit tcp any any eq 5061 access-list 111 permit udp any any eq 5060 access-list 111 permit udp any any eq 5061 access-list 111 permit udp any any eq 2427 access-list 111 permit tcp any any eq 1720 access-list 111 permit tcp any any eq 11720 access-list 111 permit udp any any eq 2517 access-list 111 permit udp any any range 16384 32767 !-- Permit (Police or Drop)/Deny (Allow) all other Layer 3 and Layer 4 !-- 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-voice-class match access-group 111 !-- Create a Policy-Map that will be applied to the !-- Control-Plane of the device. policy-map drop-voice-traffic class drop-voice-class drop !-- Apply the Policy-Map to the Control-Plane of the !-- device. control-plane service-policy input drop-voice-traffic
In the above CoPP example, the access control list entries (ACEs) that match the potential exploit packets with the "permit" action result in the exploit packets being discarded by the policy-map "drop" function. Meanwhile, packets that match the "deny" action (not shown) are not affected by the policy-map drop function.
Please note that in the 12.2S and 12.0S Cisco IOS trains the policy-map syntax is different:
policy-map drop-voice-traffic class drop-voice-class police 32000 1500 1500 conform-action drop exceed-action drop
Additional information on the configuration and use of the CoPP feature can be found at http://www.cisco.com/web/about/security/intelligence/coppwp_gs.html and http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtrtlimt.html.
Additional mitigations 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-20070808-IOS-voice
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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.
Each row of the Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table.
For further information about how Cisco IOS is built, numbered and maintained, please see the following URL: http://www.cisco.com/web/about/security/intelligence/ios-ref.html
Major Release
Availability of Repaired Releases
Affected 12.0-Based Release
First Fixed Release
Recommended Release
12.0
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0DA
Not Vulnerable
12.0DB
Not Vulnerable
12.0DC
Not Vulnerable
12.0S
Not Vulnerable
12.0SC
Not Vulnerable
12.0SL
Not Vulnerable
12.0SP
Not Vulnerable
12.0ST
Not Vulnerable
12.0SX
Not Vulnerable
12.0SY
Not Vulnerable
12.0SZ
Not Vulnerable
12.0T
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0W
Not Vulnerable
12.0WC
12.0(5)WC16
12.0WT
Not Vulnerable
12.0XA
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XB
Not Vulnerable
12.0XC
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XD
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XE
Vulnerable; first fixed in 12.1(27b)E2
12.0XF
Vulnerable; contact TAC
12.0XG
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XH
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XI
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XJ
Not Vulnerable
12.0XK
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XL
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XM
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XN
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XQ
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XR
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XS
Not Vulnerable
12.0XV
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.0XW
Not Vulnerable
Affected 12.1-Based Release
First Fixed Release
Recommended Release
12.1
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1AA
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1AX
Not Vulnerable
12.1AY
Not Vulnerable
12.1AZ
Not Vulnerable
12.1CX
Not Vulnerable
12.1DA
Not Vulnerable
12.1DB
Not Vulnerable
12.1DC
Not Vulnerable
12.1E
12.1(27b)E2
12.1EA
12.1(22)EA10
12.1(22)EA10a
12.1(22)EA10b; available 13-Sept-07
12.1EB
Not Vulnerable
12.1EC
Vulnerable; first fixed in 12.2(4)BC1
12.3(17b)BC8
12.3(21a)BC3
12.1EO
Not Vulnerable
12.1EU
Not Vulnerable
12.1EV
Not Vulnerable
12.1EW
Not Vulnerable
12.1EX
Vulnerable; first fixed in 12.1(27b)E2
12.1EY
Vulnerable; first fixed in 12.1(27b)E2
12.1EZ
Vulnerable; first fixed in 12.1(27b)E2
12.1GA
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1GB
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1T
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1XA
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1XB
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1XC
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1XD
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1XE
Vulnerable; first fixed in 12.1(27b)E2
12.1XF
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XG
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XH
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1XI
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1XJ
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XK
Not Vulnerable
12.1XL
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XM
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XN
Not Vulnerable
12.1XO
Not Vulnerable
12.1XP
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XQ
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XR
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XS
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1XT
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XU
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XV
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1XW
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1XX
Not Vulnerable
12.1XY
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1XZ
Vulnerable; first fixed in 12.2(26c); available 14-Aug-07
12.2(46a)
12.1YA
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1YB
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1YC
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1YD
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1YE
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1YF
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1YG
Not Vulnerable
12.1YH
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1YI
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.1YJ
Not Vulnerable
Affected 12.2-Based Release
First Fixed Release
Recommended Release
12.2
12.2(26c); available 14-Aug-07
12.2(27c); available 14-Aug-07
12.2(28d); available 14-Aug-07
12.2(29b); available 14-Aug-07
12.2(46a); available 15-Aug-07
12.2(46a)
12.2B
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2BC
Not Vulnerable
12.2BW
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2BY
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2BZ
Not Vulnerable
12.2CX
Not Vulnerable
12.2CY
Not Vulnerable
12.2CZ
Vulnerable; contact TAC
12.2DA
Not Vulnerable
12.2DD
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2DX
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2EU
Not Vulnerable
12.2EW
Not Vulnerable
12.2EWA
Not Vulnerable
12.2EX
Not Vulnerable
12.2EY
Not Vulnerable
12.2EZ
Not Vulnerable
12.2FX
Not Vulnerable
12.2FY
Not Vulnerable
12.2FZ
Not Vulnerable
12.2IXA
Vulnerable; first fixed in 12.2(18)IXD1
12.2(18)IXD1
12.2IXB
Vulnerable; first fixed in 12.2(18)IXD1
12.2(18)IXD1
12.2IXC
Vulnerable; first fixed in 12.2(18)IXD1
12.2(18)IXD1
12.2IXD
12.2(18)IXD1
12.2(18)IXD1
12.2IXE
Not Vulnerable
12.2JA
Not Vulnerable
12.2JK
Not Vulnerable
12.2MB
Not Vulnerable
12.2MC
12.2(15)MC1
12.2(15)MC2a
12.2(15)MC2i
12.2(8)MC1
12.2(8)MC2
12.2(15)MC2j
12.2S
12.2(14)S19
12.2(18)S13
12.2(20)S13
12.2(25)S13
12.2(30)S
12.2(25)S13
12.2(14)S19
12.2SB
12.2(28)SB1
12.2(31)SB6
12.2(28)SB9; available 15-Aug-07
12.2(31)SB6
12.2SBC
Vulnerable; first fixed in 12.2(28)SB1
12.2(28)SB9; available 15-Aug-07
12.2(31)SB6
12.2SE
Not Vulnerable
12.2SEA
Not Vulnerable
12.2SEB
Not Vulnerable
12.2SEC
Not Vulnerable
12.2SED
Not Vulnerable
12.2SEE
Not Vulnerable
12.2SEF
Not Vulnerable
12.2SEG
Not Vulnerable
12.2SG
Not Vulnerable
12.2SGA
Not Vulnerable
12.2SL
Not Vulnerable
12.2SM
Not Vulnerable
12.2SO
Not Vulnerable
12.2SRA
12.2(33)SRA5
12.2(33)SRA5
12.2SRB
12.2(33)SRB2; available 31-Aug-07
12.2(33)SRB2; available 31-Aug-07
12.2SU
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2SV
12.2(22)SV
12.2(23)SV
12.2(24)SV
12.2(25)SV
12.2(27)SV2
12.2(27)SV3
12.2(28)SV1
12.2(29)SV
12.2(29a)SV
12.2(29)SV4; available 14-Oct-07
12.2SVA
Not Vulnerable
12.2SVC
Vulnerable; contact TAC
12.2SW
12.2(20)SW
12.2(21)SW
12.2(21)SW1
12.2(25)SW10
12.2(25)SW11
12.2(25)SW11
12.2SX
Vulnerable; first fixed in 12.2(18)SXF10
12.2SXA
Vulnerable; first fixed in 12.2(18)SXF10
12.2SXB
Vulnerable; first fixed in 12.2(18)SXF10
12.2(18)SXF10
12.2SXD
Vulnerable; contact TAC
12.2SXE
Vulnerable; first fixed in 12.2(18)SXF10
12.2(18)SXF10
12.2SXF
12.2(18)SXF10
12.2(18)SXF10
12.2SXH
Not Vulnerable
12.2SY
Not Vulnerable
12.2SZ
Vulnerable; first fixed in 12.2(30)S
12.2(25)S13
12.2(14)S19
12.2T
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2TPC
12.2(8)TPC10c; available 17-Aug-07
12.2(8)TPC10c
12.2UZ
Not Vulnerable
12.2VZ
Vulnerable; first fixed in 12.2(31)SB6
12.2(28)SB9; available 15-Aug-07
12.2(31)SB6
12.2XA
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XB
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XC
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2XD
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XE
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XF
Not Vulnerable
12.2XG
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XH
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XI
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XJ
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XK
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XL
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XM
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XN
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XQ
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XR
Not Vulnerable
12.2XS
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XT
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XU
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XV
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2XW
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2YA
12.2(4)YA12; available 17-Aug-07
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2YB
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2YC
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2YD
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YE
Vulnerable; first fixed in 12.2(30)S
12.2(25)S13
12.2(14)S19
12.2YF
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2YG
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2YH
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2YJ
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2YK
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YL
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YM
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YN
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YO
Not Vulnerable
12.2YP
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2YQ
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YR
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YS
Vulnerable; contact TAC
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YT
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2YU
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YV
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YW
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YX
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YY
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2YZ
Vulnerable; first fixed in 12.2(30)S
12.2(25)S13
12.2(14)S19
12.2ZA
Not Vulnerable
12.2ZB
12.2(8)ZB
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2ZC
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2ZD
Vulnerable; contact TAC
12.2ZE
Vulnerable; first fixed in 12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.2ZF
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2ZG
Vulnerable; contact TAC
12.3(2)XA6
12.3(8)YG6; available 16-Aug-07
12.2ZH
12.2(13)ZH9; available 17-Aug-07
12.2(13)ZH9
12.2ZJ
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2ZL
Vulnerable, first fixed in 12.3(11)T12, available 16-Aug-07 for the Cisco 17xx;
first fixed in 12.4(16) for the Cisco 3200;
first fixed in 12.3(7)XR7, available 13-Aug-07 for the ICS7750
12.2ZP
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.2ZR
Vulnerable; contact TAC
12.2ZU
Vulnerable; first fixed in 12.2(33)SXH; available 31-Aug-07
12.2(33)SXH; available 31-Aug-07
12.2ZW
Vulnerable; contact TAC
12.2ZY
12.2(18)ZY1
12.2(18)ZY2; available 14-Sep-07
Affected 12.3-Based Release
First Fixed Release
Recommended Release
12.3
12.3(17c); available 16-Aug-07
12.3(18a); available 16-Aug-07
12.3(19a); available 16-Aug-07
12.3(20a)
12.3(21b)
12.3(22a)
12.3(23)
12.3(23)
12.3(20a)
12.3(21b)
12.3(22a)
12.3(18a)
12.3(19a); available 16-Aug-07
12.3(17c); available 16-Aug-07
12.3B
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3BC
Not Vulnerable
12.3BW
Not Vulnerable
12.3EU
Not Vulnerable
12.3JA
Not Vulnerable
12.3JEA
Not Vulnerable
12.3JEB
Not Vulnerable
12.3JK
Not Vulnerable
12.3JL
Not Vulnerable
12.3JX
Not Vulnerable
12.3T
Limited platform support is available
12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3TPC
12.3(4)TPC11b; available 17-Aug-07
12.3(4)TPC11b; available 17-Aug-07
12.3VA
Not Vulnerable
12.3XA
12.3(2)XA6
12.3(2)XA6
12.3XB
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3XC
12.3(2)XC5
12.3(2)XC5
12.3XD
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3XE
12.3(2)XE5; available 17-Aug-07
12.3(2)XE5
12.3XF
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3XG
Vulnerable; contact TAC
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3XH
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3XI
12.3(7)XI1b
12.3(7)XI8a
12.3(7)XI2a
12.3(7)XI10a; available 21-Aug-07
12.3XJ
Vulnerable; first fixed in 12.3(14)YX9; available 13-Aug-07
12.3(14)YX9; available 13-Aug-07
12.3XK
Vulnerable; first fixed in 12.3(11)T12; available 16-Aug-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3XQ
Vulnerable; first fixed in 12.4(16)
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3XR
12.3(7)XR7; available 17-Aug-07
12.3(7)XR7; available 17-Aug-07
12.3XS
Vulnerable; first fixed in 12.4(16)
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3XU
12.3(8)XU
12.4(11)T3
12.4(9)T5; available 24-Aug-07
12.4(2)T6; available 20-Aug-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(15)T1
12.3XW
Vulnerable; first fixed in 12.3(14)YX9; available 13-Aug-07
12.3(14)YX9; available 13-Aug-07
12.3XY
Vulnerable; contact TAC
12.4(11)T3
12.4(9)T5; available 24-Aug-07
12.4(2)T6; available 20-Aug-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(15)T1
12.3YA
Vulnerable; first fixed in 12.4(16)
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.3(8)YG6; available 16-Aug-07
12.3YD
Vulnerable; first fixed in 12.4(11)T3
12.4(11)T3
12.4(9)T5; available 24-Aug-07
12.4(2)T6; available 20-Aug-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(15)T1
12.3YF
Vulnerable; first fixed in 12.3(14)YX9; available 13-Aug-07
12.3(14)YX9; available 13-Aug-07
12.3YG
12.3(8)YG6; available 16-Aug-07
12.3(8)YG6; available 16-Aug-07
12.3YH
Vulnerable; first fixed in 12.4(11)T3
12.4(11)T3
12.4(9)T5; available 24-Aug-07
12.4(2)T6; available 20-Aug-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(15)T1
12.3YI
Vulnerable; first fixed in 12.4(11)T3
12.4(11)T3
12.4(9)T5; available 24-Aug-07
12.4(2)T6; available 20-Aug-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(15)T1
12.3YJ
Not Vulnerable
12.3YK
12.3(11)YK3; available 20-Aug-07
12.3(11)YK3; available 20-Aug-07
12.3YM
12.3(14)YM11; available 23-Aug-07
12.3(14)YM11; available 23-Aug-07
12.3YQ
Vulnerable; first fixed in 12.4(11)T3
12.4(11)T3
12.4(9)T5; available 24-Aug-07
12.4(2)T6; available 20-Aug-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(15)T1
12.3YS
Vulnerable; first fixed in 12.4(11)T3
12.3(11)YS2
12.3YT
Vulnerable; first fixed in 12.4(11)T3
12.4(11)T3
12.4(9)T5; available 24-Aug-07
12.4(2)T6; available 20-Aug-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(15)T1
12.3YU
Vulnerable; first fixed in 12.4(2)XB6; available 16-Aug-07
12.4(2)XB6; available 16-Aug-07
12.3YX
12.3(14)YX9; available 13-Aug-07
12.3(14)YX9; available 13-Aug-07
12.3YZ
12.3(11)YZ2; available 17-Aug-07
12.3(11)YZ2; available 17-Aug-07
Affected 12.4-Based Release
First Fixed Release
Recommended Release
12.4
12.4(10c); available 20-Aug-07
12.4(12c)
12.4(13d)
12.4(16)
12.4(3h); available 20-Aug-07
12.4(5c); available 15-Aug-07
12.4(7f)
12.4(8d); available 3-Sep-07
12.4(12c)
12.4(3h)
12.4(5c)
12.4(8d); available 03-Sep-07
12.4(7f)
12.4(16)
12.4(10c)
12.4(13d)
12.4JA
Not Vulnerable
12.4JX
Not Vulnerable
12.4MD
Not Vulnerable
12.4MR
12.4(12)MR2; available 14-Aug-07
12.4(12)MR2
12.4SW
Not Vulnerable
12.4T
12.4(11)T3
12.4(15)T1
12.4(2)T6; available 3-Sep-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(9)T5; available 24-Aug-07
12.4(11)T3
12.4(9)T5; available 24-Aug-07
12.4(2)T6; available 20-Aug-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(15)T1
12.4XA
Vulnerable; first fixed in 12.4(11)T3
12.4(11)T3
12.4(9)T5; available 24-Aug-07
12.4(2)T6; available 20-Aug-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(15)T1
12.4XB
12.4(2)XB6; available 16-Aug-07
12.4(2)XB6; available 16-Aug-07
12.4XC
12.4(4)XC7; available 17-Aug-07
12.4(4)XC7
12.4XD
12.4(4)XD8; available 13-Aug-07
12.4(4)XD8; available 30-Aug-07
12.4XE
12.4(6)XE3; available 17-Aug-07
12.4(6)XE3
12.4XF
Not Vulnerable
12.4XG
Not Vulnerable
12.4XJ
12.4(11)XJ4
12.4(11)XJ4
12.4XK
Vulnerable; first fixed in 12.4(11)T3
12.4(11)T3
12.4(9)T5; available 24-Aug-07
12.4(2)T6; available 20-Aug-07
12.4(4)T8; available 28-Aug-07
12.4(6)T8
12.4(15)T1
12.4XT
12.4(6)XT1; available 17-Aug-07
12.4(6)XT1
12.4XV
12.4(11)XV1; available 17-Aug-07
12.4(11)XV1
12.4XW
12.4(11)XW2
12.4(11)XW3; available 24-Aug-07
12.4(11)XW3; available 13-Aug-07
Fixed Software for Cisco Unified Communications Manager
CUCM Version
Fixed Release
Download Location
CUCM 3.3
Not affected
Software release 3.3 is not affected by CSCsi80102 (registered customers only)
CUCM 4.x
Not affected
None of 4.x software releases are affected by CSCsi80102 (registered customers only)
CUCM 5.0
Not Provided
Upgrade to CUCM 5.1(2b)
CUCM 5.1
5.1(2b)
http://www.cisco.com/pcgi-bin/tablebuild.pl/callmgr-51?psrtdcat20e2
CUCM 6.0
6.0(1a)
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The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities described in this advisory.
The following vulnerabilities were discovered during internal testing:
- CSCsi80749 Crash while processing malformed SIP packet
- CSCsi80102 CUCM - Crash while processing malformed SIP packet
- CSCeb21064 Crash while processing malformed SIP packet
- CSCse40276 Router crashed by malformed SIP message
- CSCse68355 Router crashed by malformed SIP packet
- CSCsf30058 Memory leak when processing malformed SIP message
- CSCsf08998 MGCP stop responding after receiving malformed packet
- CSCsd81407 Router crash on receiving abnormal MGCP messages
- CSCsg70474 IOS FW with h323 inspect crashes when malformed H.323 packets received
- CSCse68138 Issue in handling specific packets in VOIP RTP Lib
The following vulnerabilities were encountered in customer networks:
- CSCsf11855 Crash while processing malformed SIP packet
- CSCsb24007 Memory corruption and unexpected reload on receiving a SIP packet
- CSCsc60249 Crash while processing malformed SIP packet
- CSCsi60004 H323 Proxy Unregistration from Gatekeeper
- CSCse05642 I/O memory corruption crash on a router
- CSCej20505 Router hangs with overly large packet
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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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Show LessRevision 1.2
2007-August-20
Updated the SIP-related vulnerabilities for the Vulnerable Products section.
Revision 1.1
2007-August-08
Updated commands in the Infrastructure Access Control Lists (iACL) section.
Revision 1.0
2007-August-08
Initial public release.
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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.
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