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AUSCERT External Security Bulletin Redistribution
ESB-2013.1172
Cisco Secure Access Control Server Remote Command Execution Vulnerability
29 August 2013
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Secure Access Control Server
Publisher: Cisco Systems
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2013-3466
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130828-acs
Comment: Cisco Secure ACS for Windows versions 4.0 through 4.2.1.15 are
affected by this vulnerability when configured as a RADIUS server with
EAP-FAST authentication.
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Cisco Security Advisory: Cisco Secure Access Control Server Remote Command Execution Vulnerability
Advisory ID: cisco-sa-20130828-acs
Revision 1.0
For Public Release 2013 August 28 16:00 UTC (GMT)
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Summary
=======
A vulnerability in the EAP-FAST authentication module of Cisco Secure Access Control Server (ACS) versions 4.0 through 4.2.1.15 could allow an unauthenticated, remote attacker to execute arbitrary commands on the Cisco Secure ACS server. This vulnerability is only present when Cisco Secure ACS is configured as a RADIUS server.
The vulnerability is due to improper parsing of user identities used for EAP-FAST authentication. An attacker could exploit this vulnerability by sending crafted EAP-FAST packets to an affected device. An exploit could allow the attacker to execute arbitrary commands on the Cisco Secure ACS server and take full control of the affected server.
There are no workarounds for this vulnerability.
Cisco has released free software updates that address this vulnerability. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130828-acs
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