Cisco Security Advisory
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AV:N/AC:L/Au:N/C:N/I:C/A:N/E:F/RL:OF/RC:C
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Cisco Network Admission Control (NAC) Manager contains a directory traversal vulnerability that may allow an unauthenticated attacker to obtain system information.
There are no workarounds to mitigate this vulnerability.
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-20111005-nac.
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Vulnerable Products
Only Cisco NAC Manager software versions 4.8.X are affected by this vulnerability. Cisco NAC Manager software versions 4.7.X and earlier are not affected.Products Confirmed Not Vulnerable
The Cisco NAC Server (Appliance) is not affected. The Cisco Identity Services Engine (ISE) is not affected. No other Cisco products are currently known to be affected by this vulnerability.
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The Cisco NAC (formerly Cisco Clean Access) solution allows network administrators to authenticate, authorize, evaluate, and remediate wired, wireless, and remote users and their machines prior to allowing users onto the network. The solution identifies whether machines are compliant with security policies and repairs vulnerabilities before permitting access to the network. You can use the NAC Manager server and its web-based administration console to manage multiple NAC Appliances in a deployment.
Cisco NAC Manager contains a directory traversal vulnerability. The management interface uses TCP port 443. An unauthenticated attacker could exploit this vulnerability to access sensitive information, including password files and system logs, that could be leveraged to launch subsequent attacks. This vulnerability is documented in Cisco bug ID CSCtq10755 ( registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2011-3305.
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There are no workarounds to mitigate this vulnerability.
Additional 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-20111005-nac.
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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.
This vulnerability has been corrected in Cisco NAC Manager Software version 4.9.
Cisco NAC Manager software can be downloaded from the following link:
http://www.cisco.com/cisco/pub/software/portal/select.html?&i=!m&mdfid=279515766
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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 Nenad Stojanovski of Macedonian Telekom.
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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 1.1 2012-July-14 Updated meta-tags for Affected Products. Revision 1.0
2011-October-05
Initial public release.
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