Cisco Secure Access Control Server EAP denial of service
|cisco-sacs-eap-dos (44871)||Medium Risk|
Cisco Secure Access Control Server is vulnerable to a denial of service, caused by an error during the parsing of certain EAP packets when the RADIUS shared secret and a valid Network Access Server (NAS) IP address is known. By sending a specially-crafted Remote Authentication Dial In User Service (RADIUS) Extensible Authentication Protocol (EAP) Message attribute packet, a remote attacker could cause the CSRadius and CSAuth processes to crash.
Denial of Service
Refer to cisco-sr-20080903-csacs for patch, upgrade or suggested workaround information. See References.
- cisco-sr-20080903-csacs: Cisco Security Response: Cisco Secure ACS Denial Of Service Vulnerability.
- BID-30997: Cisco Secure ACS EAP-Response Packet Parsing Denial of Service Vulnerability
- CVE-2008-2441: Cisco Secure ACS 3.x before 3.3(4) Build 12 patch 7, 4.0.x, 4.1.x before 4.1(4) Build 13 Patch 11, and 4.2.x before 4.2(0) Build 124 Patch 4 does not properly handle an EAP Response packet in which the value of the length field exceeds the actual packet length, which allows remote authenticated users to cause a denial of service (CSRadius and CSAuth service crash) or possibly execute arbitrary code via a crafted RADIUS (1) EAP-Response/Identity, (2) EAP-Response/MD5, or (3) EAP-Response/TLS Message Attribute packet.
- OSVDB ID: 47917: Cisco Secure ACS Crafted RADIUS EAP Packet Remote DoS
- SA31731: Cisco Secure ACS EAP Packet Denial of Service
- SECTRACK ID: 1020814: Cisco Secure Access Control Server Bug in Processing RADIUS EAP Packets Lets Remote Users Deny Service
- Cisco Secure Access Control Server
- Cisco Secure ACS
Sep 03, 2008
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.