VAR-200805-0213
Vulnerability from variot - Updated: 2025-04-10 23:00Memory leak in Cisco Content Switching Module (CSM) 4.2(3) up to 4.2(8) and Cisco Content Switching Module with SSL (CSM-S) 2.1(2) up to 2.1(7) allows remote attackers to cause a denial of service (memory consumption) via TCP segments with an unspecified combination of TCP flags. Cisco Unified Communications Manager is prone to multiple denial-of-service vulnerabilities. These issues affect the following components: Certificate Trust List (CTL) Provider Certificate Authority Proxy Function (CAPF) Session Initiation Protocol (SIP) Simple Network Management Protocol (SNMP) Trap An attacker can exploit these issues to cause denial-of-service conditions in the affected application. This issue occurs when CSM and CSM-S are configured to use layer 7 load balancing. An attacker can exploit this issue to cause devices using the module to stop accepting TCP connections or to overload, denying service to legitimate users. ----------------------------------------------------------------------
Secunia Network Software Inspector 2.0 (NSI) - Public Beta
The Public Beta has ended. Thanks to all that participated.
Cisco CSM 4.2.9: http://www.cisco.com/pcgi-bin/tablebuild.pl/cat6000-csm?psrtdcat20e2
Cisco CSM 2.1.8: http://www.cisco.com/pcgi-bin/tablebuild.pl/cat6000-csms?psrtdcat20e2
PROVIDED AND/OR DISCOVERED BY: Reported by the vendor.
ORIGINAL ADVISORY: http://www.cisco.com/warp/public/707/cisco-sa-20080514-csm.shtml
About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities.
Subscribe: http://secunia.com/secunia_security_advisories/
Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/
Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor.
Cisco has released free software updates that address this vulnerability.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20080514-csm.shtml.
Affected Products
Vulnerable Products +------------------
The Cisco CSM and Cisco CSM-S are affected by the vulnerability described in this document if they are running an affected software version and are configured for layer 7 load balancing.
The following versions of the Cisco CSM software are affected by this vulnerability: 4.2(3), 4.2(3a), 4.2(4), 4.2(5), 4.2(6), 4.2(7), and 4.2(8).
The following versions of the Cisco CSM-S software are also affected by this vulnerability: 2.1(2), 2.1(3), 2.1(4), 2.1(5), 2.1(6), and 2.1(7).
To determine the software version in use by the CSM or CSM-S, log into the supervisor of the chassis that hosts the CSM or CSM-S modules and issue the command "show module version" (Cisco IOS) or "show version" (Cisco CatOS). CSM modules will display as model "WS-X6066-SLB-APC", CSM-S modules will display as model "WS-X6066-SLB-S-K9", and the software version will be indicated next to the "Sw:" label.
Note that the output from "show module version" (for Cisco IOS) is slightly different from the output from "show version" (for Cisco CatOS). However, in both cases the model names will read as previously described, and the software version will be easily identified by looking for the "Sw:" label.
The following example shows a CSM in slot number 4 running software version 4.2(3):
switch>show module version
Mod Port Model Serial # Versions
+--- ---- ------------------ ----------- -------------------------------------
1 3 WS-SVC-AGM-1-K9 SAD092601W5 Hw : 1.0
Fw : 7.2(1)
Sw : 5.0(3)
2 6 WS-SVC-FWM-1 SAD093200X8 Hw : 3.0
Fw : 7.2(1)
Sw : 3.2(3)1
3 8 WS-SVC-IDSM-2 SAD0932089Z Hw : 5.0
Fw : 7.2(1)
Sw : 5.1(6)E1
4 4 WS-X6066-SLB-APC SAD093004BD Hw : 1.7
Fw :
Sw : 4.2(3)
5 2 WS-SUP720-3B SAL0934888E Hw : 4.4
Fw : 8.1(3)
Sw : 12.2(18)SXF11
Sw1: 8.6(0.306)R3V15
WS-SUP720 SAL09348488 Hw : 2.3
Fw : 12.2(17r)S2
Sw : 12.2(18)SXF11
WS-F6K-PFC3B SAL0934882R Hw : 2.1
A Cisco CSM or CSM-S is configured for layer 7 load balancing if one or more layer 7 Server Load Balancing (SLB) policies are referenced in the configuration of a virtual server. There are six possible types of SLB policies: "client-group", "cookie-map", "header-map", "reverse-sticky", "sticky-group", and "url-map". Of these, the "client-group" policy type is always a layer 4 policy. The remaining policy types are layer 7 policies and, if used, would render a device affected by the vulnerability described in this document. Note the SLB policy "TEST-SPORTS-50", which uses "url-map" and "header-map" layer 7 policies, and that is applied to the virtual server named "WEB":
module ContentSwitchingModule 5
[...]
!
policy TEST-SPORTS-50
url-map SPORTS
header-map TEST
client-group 50
serverfarm WEBFARM2
!
vserver WEB
virtual 10.20.221.100 tcp www
serverfarm WEBFARM
persistent rebalance
slb-policy TEST-SPORTS-50
inservice
Products Confirmed Not Vulnerable +--------------------------------
Only Cisco CSM modules running indicated 4.2 versions are affected by this vulnerability. CSM software versions 4.1, 3.2 and 3.1 are not affected by this vulnerability.
Cisco CSM-S modules running indicated 2.1 versions are the only vulnerable versions of software for that product.
The Cisco IOS SLB feature is not affected by this vulnerability.
No other Cisco products are currently known to be affected by this vulnerability. The Cisco Secure Content Accelerator is not affected by this vulnerability.
Details
The Cisco CSM is an integrated SLB line card for the Catalyst 6500 and 7600 Series that is designed to enhance the response time for client traffic to end points including servers, caches, firewalls, Secure Sockets Layer (SSL) devices, and VPN termination devices.
The Cisco CSM-S combines high-performance SLB with SSL offload. The CSM-S is similar to the CSM; however, unlike the CSM, the CSM-S can terminate and initiate SSL-encrypted traffic. This ability allows the CSM-S to perform intelligent load balancing while ensuring secure end-to-end encryption.
The memory leak can be detected by issuing the command "show module ContentSwitchingModule tech-support all | include Outstanding" on the supervisor and checking the command output for a high number of outstanding buffers as seen in the following example:
switch#show module ContentSwitchingModule 10 tech-support all | include Outstanding Outstanding slowpath(low pri) buffers 0 0 Outstanding slowpath(high pri) buffers 0 0 Outstanding blocks 0 0 Outstanding small buffers 0 0 Outstanding medium buffers 823 0 Outstanding large buffers 0 0 Outstanding sessions 0 0 Outstanding Closes 0 0 Close Relinquish Outstanding 0
Because small, medium, and large buffers can be affected by the memory leak, administrators are advised to check the number of these buffers in the output from the preceding command to accurately detect a memory leak condition.
This vulnerability is documented in Cisco Bug ID CSCsl40722 and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2008-1749.
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 VSS Cat
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.
- CSM: Potential buffer loss with irregular client streams (CSCsl40722)
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 this vulnerability against a system running a vulnerable version of the Cisco CSM or the Cisco CSM-S software may cause the CSM or CSM-S to stop passing traffic. Repeated attacks may result in a prolonged DoS condition, which could affect the services that are offered by the end point devices behind the CSM or CSM-S.
Note that the supervisor or any other non-CSM or non-CSM-S service module in the same chassis of the Catalyst 6500 switch or 7600 Series router that hosts the CSM or CSM-S will not be affected by this vulnerability.
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.
This vulnerability is fixed in version 4.2.9 of the Cisco CSM software, and in version 2.1.8 of the Cisco CSM-S software.
CSM software can be downloaded from http://www.cisco.com/pcgi-bin/tablebuild.pl/cat6000-csm?psrtdcat20e2.
Information on how to upgrade the CSM software is available at http://www.cisco.com/en/US/products/hw/modules/ps2706/products_tech_note09186a0080094526.shtml.
CSM-S software can be downloaded from http://www.cisco.com/pcgi-bin/tablebuild.pl/cat6000-csms?psrtdcat20e2.
Information on how to upgrade the CSM-S software is available at http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/csms/2.1.1/configuration/guide/getstart.html#wp1041858.
Workarounds
There are no workarounds for this vulnerability. When the Cisco CSM or Cisco CSM-S has run out of memory it will simply stop passing traffic and it will have to be reloaded. The CSM and CSM-S can be reloaded via the command "hw-module module reset" (Cisco IOS) or via the command "reset " (Cisco CatOS) from the privileged EXEC prompt of the supervisor. There is no need to reload the supervisor.
Obtaining Fixed Software
Cisco has released free software updates that address this vulnerability. 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/products/prod_warranties_item09186a008088e31f.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/warp/public/687/Directory/DirTAC.shtml 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 the investigation of customer support cases.
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-20080514-csm.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@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 | 2008-May-14 | 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.
+-------------------------------------------------------------------- All contents are Copyright (C) 2007-2008 Cisco Systems, Inc. All rights reserved. +--------------------------------------------------------------------
Updated: May 14, 2008 Document ID: 105450
+--------------------------------------------------------------------
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"data": "Memory leak in Cisco Content Switching Module (CSM) 4.2(3) up to 4.2(8) and Cisco Content Switching Module with SSL (CSM-S) 2.1(2) up to 2.1(7) allows remote attackers to cause a denial of service (memory consumption) via TCP segments with an unspecified combination of TCP flags. Cisco Unified Communications Manager is prone to multiple denial-of-service vulnerabilities. \nThese issues affect the following components:\nCertificate Trust List (CTL) Provider\nCertificate Authority Proxy Function (CAPF)\nSession Initiation Protocol (SIP)\nSimple Network Management Protocol (SNMP) Trap\nAn attacker can exploit these issues to cause denial-of-service conditions in the affected application. This issue occurs when CSM and CSM-S are configured to use layer 7 load balancing. \nAn attacker can exploit this issue to cause devices using the module to stop accepting TCP connections or to overload, denying service to legitimate users. ----------------------------------------------------------------------\n\nSecunia Network Software Inspector 2.0 (NSI) - Public Beta\n\nThe Public Beta has ended. Thanks to all that participated. \n\nCisco CSM 4.2.9:\nhttp://www.cisco.com/pcgi-bin/tablebuild.pl/cat6000-csm?psrtdcat20e2\n\nCisco CSM 2.1.8:\nhttp://www.cisco.com/pcgi-bin/tablebuild.pl/cat6000-csms?psrtdcat20e2\n\nPROVIDED AND/OR DISCOVERED BY:\nReported by the vendor. \n\nORIGINAL ADVISORY:\nhttp://www.cisco.com/warp/public/707/cisco-sa-20080514-csm.shtml\n\n----------------------------------------------------------------------\n\nAbout:\nThis Advisory was delivered by Secunia as a free service to help\neverybody keeping their systems up to date against the latest\nvulnerabilities. \n\nSubscribe:\nhttp://secunia.com/secunia_security_advisories/\n\nDefinitions: (Criticality, Where etc.)\nhttp://secunia.com/about_secunia_advisories/\n\n\nPlease Note:\nSecunia recommends that you verify all advisories you receive by\nclicking the link. \nSecunia NEVER sends attached files with advisories. \nSecunia does not advise people to install third party patches, only\nuse those supplied by the vendor. \n\nCisco has released free software updates that address this\nvulnerability. \n\nThis advisory is posted at\nhttp://www.cisco.com/warp/public/707/cisco-sa-20080514-csm.shtml. \n\nAffected Products\n=================\n\nVulnerable Products\n+------------------\n\nThe Cisco CSM and Cisco CSM-S are affected by the vulnerability\ndescribed in this document if they are running an affected software\nversion and are configured for layer 7 load balancing. \n\nThe following versions of the Cisco CSM software are affected by this\nvulnerability: 4.2(3), 4.2(3a), 4.2(4), 4.2(5), 4.2(6), 4.2(7), and\n4.2(8). \n\nThe following versions of the Cisco CSM-S software are also affected by\nthis vulnerability: 2.1(2), 2.1(3), 2.1(4), 2.1(5), 2.1(6), and 2.1(7). \n\nTo determine the software version in use by the CSM or CSM-S, log into\nthe supervisor of the chassis that hosts the CSM or CSM-S modules and\nissue the command \"show module version\" (Cisco IOS) or \"show version\"\n(Cisco CatOS). CSM modules will display as model \"WS-X6066-SLB-APC\",\nCSM-S modules will display as model \"WS-X6066-SLB-S-K9\", and the\nsoftware version will be indicated next to the \"Sw:\" label. \n\nNote that the output from \"show module version\" (for Cisco IOS) is\nslightly different from the output from \"show version\" (for Cisco\nCatOS). However, in both cases the model names will read as previously\ndescribed, and the software version will be easily identified by looking\nfor the \"Sw:\" label. \n\nThe following example shows a CSM in slot number 4 running software\nversion 4.2(3):\n\nswitch\u003eshow module version\nMod Port Model Serial # Versions\n+--- ---- ------------------ ----------- -------------------------------------\n 1 3 WS-SVC-AGM-1-K9 SAD092601W5 Hw : 1.0\n Fw : 7.2(1)\n Sw : 5.0(3)\n 2 6 WS-SVC-FWM-1 SAD093200X8 Hw : 3.0\n Fw : 7.2(1)\n Sw : 3.2(3)1\n 3 8 WS-SVC-IDSM-2 SAD0932089Z Hw : 5.0\n Fw : 7.2(1)\n Sw : 5.1(6)E1\n 4 4 WS-X6066-SLB-APC SAD093004BD Hw : 1.7\n Fw : \n Sw : 4.2(3) \n 5 2 WS-SUP720-3B SAL0934888E Hw : 4.4\n Fw : 8.1(3)\n Sw : 12.2(18)SXF11\n Sw1: 8.6(0.306)R3V15\n WS-SUP720 SAL09348488 Hw : 2.3\n Fw : 12.2(17r)S2\n Sw : 12.2(18)SXF11\n WS-F6K-PFC3B SAL0934882R Hw : 2.1\n\nA Cisco CSM or CSM-S is configured for layer 7 load balancing if one or\nmore layer 7 Server Load Balancing (SLB) policies are referenced in the\nconfiguration of a virtual server. There are six possible types of SLB\npolicies: \"client-group\", \"cookie-map\", \"header-map\", \"reverse-sticky\",\n\"sticky-group\", and \"url-map\". Of these, the \"client-group\" policy\ntype is always a layer 4 policy. The remaining policy types are\nlayer 7 policies and, if used, would render a device affected by the\nvulnerability described in this document. Note the SLB\npolicy \"TEST-SPORTS-50\", which uses \"url-map\" and \"header-map\" layer 7\npolicies, and that is applied to the virtual server named \"WEB\":\n\n module ContentSwitchingModule 5\n [...]\n !\n policy TEST-SPORTS-50\n url-map SPORTS\n header-map TEST\n client-group 50\n serverfarm WEBFARM2\n !\n vserver WEB\n virtual 10.20.221.100 tcp www\n serverfarm WEBFARM\n persistent rebalance\n slb-policy TEST-SPORTS-50\n inservice\n\n\nProducts Confirmed Not Vulnerable\n+--------------------------------\n\nOnly Cisco CSM modules running indicated 4.2 versions are affected by\nthis vulnerability. CSM software versions 4.1, 3.2 and 3.1 are not\naffected by this vulnerability. \n\nCisco CSM-S modules running indicated 2.1 versions are the only\nvulnerable versions of software for that product. \n\nThe Cisco IOS SLB feature is not affected by this vulnerability. \n\nNo other Cisco products are currently known to be affected by this\nvulnerability. The Cisco Secure Content Accelerator is not affected by\nthis vulnerability. \n\nDetails\n=======\n\nThe Cisco CSM is an integrated SLB line card for the Catalyst 6500 and\n7600 Series that is designed to enhance the response time for client\ntraffic to end points including servers, caches, firewalls, Secure\nSockets Layer (SSL) devices, and VPN termination devices. \n\nThe Cisco CSM-S combines high-performance SLB with SSL offload. The\nCSM-S is similar to the CSM; however, unlike the CSM, the CSM-S can\nterminate and initiate SSL-encrypted traffic. This ability allows the\nCSM-S to perform intelligent load balancing while ensuring secure\nend-to-end encryption. \n\nThe memory leak can be detected by issuing the command \"show module\nContentSwitchingModule \u003cslot #\u003e tech-support all | include Outstanding\"\non the supervisor and checking the command output for a high number of\noutstanding buffers as seen in the following example:\n\nswitch#show module ContentSwitchingModule 10 tech-support all | include Outstanding\nOutstanding slowpath(low pri) buffers 0 0\nOutstanding slowpath(high pri) buffers 0 0\nOutstanding blocks 0 0\nOutstanding small buffers 0 0\nOutstanding medium buffers 823 0\nOutstanding large buffers 0 0\nOutstanding sessions 0 0\nOutstanding Closes 0 0\nClose Relinquish Outstanding 0\n\nBecause small, medium, and large buffers can be affected by the memory\nleak, administrators are advised to check the number of these buffers in\nthe output from the preceding command to accurately detect a memory leak\ncondition. \n\nThis vulnerability is documented in Cisco Bug ID CSCsl40722 and has been\nassigned Common Vulnerabilities and Exposures (CVE) ID CVE-2008-1749. \n\nVulnerability Scoring Details\n+----------------------------\n\nCisco has provided scores for the vulnerability in this advisory based\non the Common Vulnerability Scoring System (CVSS). The CVSS scoring in\nthis Security Advisory is done in accordance with CVSS version 2.0. \n\nCVSS is a standards-based scoring method that conveys vulnerability\nseverity and helps determine urgency and priority of response. \n\nCisco has provided a base and temporal score. Customers can then\ncompute environmental scores to assist in determining the impact of the\nvulnerability in individual networks. \n\nCisco has provided an FAQ to answer additional questions regarding VSS\nCat\n\nhttp://www.cisco.com/web/about/security/intelligence/cvss-qandas.html. \n\nCisco has also provided a CVSS calculator to help compute the\nenvironmental impact for individual networks at\n\nhttp://intellishield.cisco.com/security/alertmanager/cvss. \n\n* CSM: Potential buffer loss with irregular client streams (CSCsl40722)\n\nCVSS Base Score - 7.8\n Access Vector - Network\n Access Complexity - Low\n Authentication - None\n Confidentiality Impact - None\n Integrity Impact - None\n Availability Impact - Complete\n\nCVSS Temporal Score - 6.4\n Exploitability - Functional\n Remediation Level - Official-Fix\n Report Confidence - Confirmed\n\n\nImpact\n======\n\nSuccessful exploitation of this vulnerability against a system running\na vulnerable version of the Cisco CSM or the Cisco CSM-S software may\ncause the CSM or CSM-S to stop passing traffic. Repeated attacks may\nresult in a prolonged DoS condition, which could affect the services\nthat are offered by the end point devices behind the CSM or CSM-S. \n\nNote that the supervisor or any other non-CSM or non-CSM-S service\nmodule in the same chassis of the Catalyst 6500 switch or 7600 Series\nrouter that hosts the CSM or CSM-S will not be affected by this\nvulnerability. \n\nSoftware Versions and Fixes\n===========================\n\nWhen considering software upgrades, also consult\nhttp://www.cisco.com/go/psirt and any subsequent advisories to determine\nexposure and a complete upgrade solution. \n\nIn all cases, customers should exercise caution to be certain the\ndevices to be upgraded contain sufficient memory and that current\nhardware and software configurations will continue to be supported\nproperly by the new release. If the information is not clear, contact\nthe Cisco Technical Assistance Center (TAC) or your contracted\nmaintenance provider for assistance. \n\nThis vulnerability is fixed in version 4.2.9 of the Cisco CSM software,\nand in version 2.1.8 of the Cisco CSM-S software. \n\nCSM software can be downloaded from\nhttp://www.cisco.com/pcgi-bin/tablebuild.pl/cat6000-csm?psrtdcat20e2. \n\nInformation on how to upgrade the CSM software is available at\nhttp://www.cisco.com/en/US/products/hw/modules/ps2706/products_tech_note09186a0080094526.shtml. \n\nCSM-S software can be downloaded from\nhttp://www.cisco.com/pcgi-bin/tablebuild.pl/cat6000-csms?psrtdcat20e2. \n\nInformation on how to upgrade the CSM-S software is available at\nhttp://www.cisco.com/en/US/docs/interfaces_modules/services_modules/csms/2.1.1/configuration/guide/getstart.html#wp1041858. \n\nWorkarounds\n===========\n\nThere are no workarounds for this vulnerability. When the Cisco CSM or\nCisco CSM-S has run out of memory it will simply stop passing traffic\nand it will have to be reloaded. The CSM and CSM-S can be reloaded via\nthe command \"hw-module module \u003cCSM or CSM-S slot number\u003e reset\" (Cisco\nIOS) or via the command \"reset \u003cCSM or CSM-S slot number\u003e\" (Cisco CatOS)\nfrom the privileged EXEC prompt of the supervisor. There is no need to\nreload the supervisor. \n\nObtaining Fixed Software\n========================\n\nCisco has released free software updates that address this\nvulnerability. Prior to deploying software, customers should consult\ntheir maintenance provider or check the software for feature set\ncompatibility and known issues specific to their environment. \n\nCustomers may only install and expect support for the feature sets\nthey have purchased. By installing, downloading, accessing or\notherwise using such software upgrades, customers agree to be bound\nby the terms of Cisco\u0027s software license terms found at\nhttp://www.cisco.com/en/US/products/prod_warranties_item09186a008088e31f.html,\nor as otherwise set forth at Cisco.com Downloads at\nhttp://www.cisco.com/public/sw-center/sw-usingswc.shtml. \n\nDo not contact psirt@cisco.com or security-alert@cisco.com for software\nupgrades. \n\nCustomers with Service Contracts\n+-------------------------------\n\nCustomers with contracts should obtain upgraded software through their\nregular update channels. For most customers, this means that upgrades\nshould be obtained through the Software Center on Cisco\u0027s worldwide\nwebsite at http://www.cisco.com. \n\nCustomers using Third Party Support Organizations\n+------------------------------------------------\n\nCustomers whose Cisco products are provided or maintained through prior\nor existing agreements with third-party support organizations, such\nas Cisco Partners, authorized resellers, or service providers should\ncontact that support organization for guidance and assistance with the\nappropriate course of action in regards to this advisory. \n\nThe effectiveness of any workaround or fix is dependent on specific\ncustomer situations, such as product mix, network topology, traffic\nbehavior, and organizational mission. Due to the variety of affected\nproducts and releases, customers should consult with their service\nprovider or support organization to ensure any applied workaround or fix\nis the most appropriate for use in the intended network before it is\ndeployed. \n\nCustomers without Service Contracts\n+----------------------------------\n\nCustomers who purchase direct from Cisco but do not hold a Cisco service\ncontract, and customers who purchase through third-party vendors but are\nunsuccessful in obtaining fixed software through their point of sale\nshould acquire upgrades by contacting the Cisco Technical Assistance\nCenter (TAC). TAC contacts are as follows. \n\n * +1 800 553 2447 (toll free from within North America)\n * +1 408 526 7209 (toll call from anywhere in the world)\n * e-mail: tac@cisco.com\n\nCustomers should have their product serial number available and be\nprepared to give the URL of this notice as evidence of entitlement to a\nfree upgrade. Free upgrades for non-contract customers must be requested\nthrough the TAC. \n\nRefer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml\nfor additional TAC contact information, including localized telephone\nnumbers, and instructions and e-mail addresses for use in various\nlanguages. \n\nExploitation and Public Announcements\n=====================================\n\nThe Cisco PSIRT is not aware of any public announcements or malicious\nuse of the vulnerability described in this advisory. \n\nThis vulnerability was discovered during the investigation of customer\nsupport cases. \n\nStatus of this Notice: FINAL\n============================\n\nTHIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY\nANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF\nMERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE\nINFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS\nAT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS\nDOCUMENT AT ANY TIME. \n\nA stand-alone copy or Paraphrase of the text of this document that omits\nthe distribution URL in the following section is an uncontrolled copy,\nand may lack important information or contain factual errors. \n\nDistribution\n============\n\nThis advisory is posted on Cisco\u0027s worldwide website at:\n\nhttp://www.cisco.com/warp/public/707/cisco-sa-20080514-csm.shtml. \n\nIn addition to worldwide web posting, a text version of this notice is\nclear-signed with the Cisco PSIRT PGP key and is posted to the following\ne-mail and Usenet news recipients. \n\n * cust-security-announce@cisco.com\n * first-bulletins@first.org\n * bugtraq@securityfocus.com\n * vulnwatch@vulnwatch.org\n * cisco@spot.colorado.edu\n * cisco-nsp@puck.nether.net\n * full-disclosure@lists.grok.org.uk\n * comp.dcom.sys.cisco@newsgate.cisco.com\n\nFuture updates of this advisory, if any, will be placed on Cisco\u0027s\nworldwide website, but may or may not be actively announced on mailing\nlists or newsgroups. Users concerned about this problem are encouraged\nto check the above URL for any updates. \n\nRevision History\n================\n\n+------------------------------------------------------------+\n| Revision 1.0 | 2008-May-14 | Initial public release |\n+------------------------------------------------------------+\n\nCisco Security Procedures\n=========================\n\nComplete information on reporting security vulnerabilities in\nCisco products, obtaining assistance with security incidents, and\nregistering to receive security information from Cisco, is available\non Cisco\u0027s worldwide website at\nhttp://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. \nThis includes instructions for press inquiries regarding Cisco security\nnotices. All Cisco security advisories are available at\nhttp://www.cisco.com/go/psirt. \n\n+--------------------------------------------------------------------\nAll contents are Copyright (C) 2007-2008 Cisco Systems, Inc. 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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.