VUPEN Security - Cisco Secure ACS EAP Remote Denial Of Service Vulnerability / Exploit (Security Advisories)

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>> Cisco Secure ACS EAP Remote Denial Of Service Vulnerability

Title : Cisco Secure ACS EAP Remote Denial Of Service Vulnerability
Advisory ID : VUPEN/ADV-2008-2491
CVE ID : CVE-2008-2441
CWE ID : CWE-20
Rated as : Moderate Risk

Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2008-09-04

Advisory Details

Description

Affected Products

Solution

References

Technical Description

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A vulnerability has been identified in Cisco Secure ACS, which could be exploited by remote attackers to cause a denial of service. This issue is caused by an error when processing a specially crafted Remote Authentication Dial In User Service (RADIUS) Extensible Authentication Protocol (EAP) Message Attribute packet containing an overly large "length" field, which could allow attackers to cause the CSRadius and CSAuth processes to crash, creating a denial of service condition.

Note: The RADIUS shared secret and a valid known Network Access Server (NAS) IP address must be known to exploit this vulnerability.

Credits

Vulnerability reported by Laurent Butti and Gabriel Campana (Orange Labs / France Telecom Group).

ChangeLog

2008-09-04 : Initial release

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