A vulnerability in the RADIUS server supplied with Cisco Secure ACS products could allow a remote attacker to execute arbitrary code on an affected system.
Cisco Secure ACS is a Remote Access Dial-In User Service (RADIUS) and Terminal Access Controller Access Control System Plus (TACACS+) security server. The RADIUS protocol is handled by the CSRadius component of the Cisco Secure ACS product which is run as a service in Windows under the Local System account.
A stack-based buffer overflow exists in the way the CSRadius service handles certain RADIUS Accounting-Request packets. This vulnerability may allow a remote attacker with the ability to craft RADIUS packets to execute arbitrary code or cause the CSRadius service to crash.
A remote attacker with prior access to the shared RADIUS secret key material may be able to execute arbitrary code on an affected system or cause the CSRadius service on that system to crash. The attacker-supplied code would be executed with the privileges of the CSRadius service, typically Local System.
This issue was reported by the NISCC Vulnerability Management Team. NISCC, in turn, thanks the CESG Vulnerability Research Group for reporting these issues to them.
This document was written by Chad R Dougherty.
|Date First Published:||2007-01-15|
|Date Last Updated:||2007-01-26 16:25 UTC|