A vulnerability has been reported in Cisco Secure Access Control Server (ACS), which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an input validation error in Cisco Secure ACS, which can be exploited to crash the "CSRadius" and "CSAuth" processes by sending a specially crafted EAP packet containing an overly large "length" value.
Successful exploitation may require knowledge of the RADIUS shared secret.
Solution: Apply patches. Please see the vendor advisory for details.
Provided and/or discovered by: Gabriel Campana and Laurent Butti, France Telecom / Orange
Original Advisory: Cisco:
Gabriel Campana and Laurent Butti:
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Subject: Cisco Secure ACS EAP Packet Denial of Service
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