Summary
Affected Products
Details
Impact
Software Versions and Fixes
Workarounds
Obtaining Fixed Software
Exploitation and Public Announcements
Status of This Notice: FINAL
Distribution
Revision History
Cisco Security Procedures
Cisco Security Agent (CSA) is a security software agent that provides threat protection for server and desktop computing systems. CSA agents can be managed by CiscoWorks VMS Management Center for Cisco Security Agents or can be standalone agents running on Cisco IP Communications application servers. Standalone agents for Cisco IP Communications application servers must be manually installed on the IP Communications application server.
A vulnerability exists in CSA agents that can allow a privilege escalation through locally executed software, providing a normal user or attacker with local system level privileges on a Windows workstation or server running managed or standalone CSA 4.5.0 or 4.5.1 agents.
Cisco has made free software available to address this vulnerability for affected customers.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20051129-csa.shtml
This section provides details on affected products.
CSA 4.5.0 and 4.5.1 agents managed by CiscoWorks VMS Management Center for Cisco Security Agents and standalone agents running on Cisco IP Communications application servers are affected when running on:
Note: These versions are used by CallManager, Cisco Conference Connection (CCC), Emergency Responder, IPCC Express, IP Interactive Voice Response (IP IVR), and IP Queue Manager
Note: This version is used by CVP 3.0 and 3.1 and CVP VXML Server.
The following products are confirmed not vulnerable:
No other Cisco products are currently known to be affected by this vulnerability.
In order to determine which version of CSA is running on client machines, "right click" on the CSA icon in the Windows task bar. On the pop-up menu, selecting "About ..." will display the version number of the agent in a pop-up window containing text similar to "Cisco Security Agent V4.5 build 565."
You can also determine the CSA version using the Management Console for Cisco Security Agent on your CiscoWorks server. Complete these steps:
Note: You can only manage CSA 4.5.X Agents with Version 4.5-X (any build) Management Center for Cisco Security Agents.
Cisco Security Agent provides threat protection for server and desktop computing systems. Vulnerable versions of Cisco Security Agent may allow software executed locally to bypass systems protections and run with elevated privileges resulting in normal users and attackers obtaining local system level privileges.
Agent checks configured to prevent malicious software from running on a CSA protected system will be active; however, any checks that occur after successful exploitation may be bypassed.
This issue is not related to a Microsoft Operating System issue nor can a CSA policy modification change this behavior.
This vulnerability is documented in the Cisco Bug Toolkit as Bug ID CSCsc42373 ( registered customers only)
For information about local system level privileges, refer to:
Successful exploitation of the vulnerability may result in a normal user or attacker gaining full control of the system, including the disabling of the CSA agent.
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.
The fixed version of the Cisco Security Agent software requires no more resources than older 4.5.0 and 4.5.1 builds. It should be suitable for any system currently running 4.5.0 or 4.5.1.
Note: This version is used by CallManager, CCC, Emergency Responder, IPCC Express, IP IVR, and IP Queue Manager.
Note: This version is used for CVP 3.0 and 3.1 and CVP VXML Server.
Cisco CSA for CallManager, CCC, Emergency Responder, IPCC Express, IP IVR, and IP Queue Manager
Cisco CSA for ICM, IPCC Enterprise, and IPCC Hosted Version 4.5.1 build 616
Cisco CSA for CVP 3.0 and 3.1 version 4.5.0 build 573. This version is used by CVP 3.0 and 3.1 and CVP VXML Server
Cisco has made free software available to address this vulnerability for affected customers. 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 can 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/public/sw-license-agreement.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
Do not contact either "psirt@cisco.com" or "security-alert@cisco.com" for software upgrades.
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 whose Cisco products are provided or maintained through prior or existing agreement 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 who purchase direct from Cisco but who do not hold a Cisco service contract and customers who purchase through third-party vendors but are unsuccessful at obtaining fixed software through their point of sale should get their upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows.
Have your product serial number available and give the URL of this notice as evidence of your entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC.
The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory.
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.
This advisory is posted on Cisco's worldwide website at http://www.cisco.com/warp/public/707/cisco-sa-20051129-csa.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.
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.
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Revision 1.0 |
2005-November-29 |
Initial Release |
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.
| Updated: Nov 29, 2005 | Document ID: 68247 |
