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Cisco Secure ACS EAP Packet Denial of Service

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Release Date:  2008-09-04    Views:  6,678

Secunia Advisory SA31731

Where:

From local network

Impact:

DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


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:
http://www.cisco.com/warp/public/707/cisco-sr-20080903-csacs.shtml

Gabriel Campana and Laurent Butti:
http://archives.neohapsis.com/archives/bugtraq/2008-09/0033.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Cisco Secure ACS EAP Packet Denial of Service

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