Cisco PIX and ASA IPSec client authentication denial of service
|cisco-pix-asa-ipsecclientauth-dos (44867)||Medium Risk|
Cisco PIX and ASA devices are vulnerable to a denial of service, caused by an authentication processing vulnerability when configured to terminate client based VPN connections. A remote attacker could exploit this vulnerability using a specially-crafted authentication packet to cause the device to reload.
Denial of Service
Refer to cisco-sa-20080903-asa for patch, upgrade or suggested workaround information. See References.
- cisco-sa-20080903-asa: Cisco Security Advisory: Remote Access VPN and SIP Vulnerabilities in Cisco PIX and Cisco ASA.
- BID-30998: Cisco PIX and Cisco ASA Multiple Denial of Service and Information Disclosure Vulnerabilities
- CVE-2008-2733: Cisco PIX and Adaptive Security Appliance (ASA) 5500 devices 7.2 before 7.2(4)2, 8.0 before 8.0(3)14, and 8.1 before 8.1(1)4, when configured as a client VPN endpoint, do not properly process IPSec client authentication, which allows remote attackers to cause a denial of service (device reload) via a crafted authentication attempt, aka Bug ID CSCso69942.
- OSVDB ID: 47921: Cisco PIX / ASA IPSec Client Crafted Authentication Request Unspecified Issue
- SA31730: Cisco ASA and PIX Security Appliances Multiple Vulnerabilities
- SECTRACK ID: 1020810: Cisco ASA IPSec Authentication Processing Bug Lets Remote Users Deny Service
- SECTRACK ID: 1020811: Cisco PIX IPSec Authentication Processing Bug Lets Remote Users Deny Service
- Cisco Adaptive Security Appliance 7.2
- Cisco Adaptive Security Appliance 8.0
- Cisco Adaptive Security Appliance 8.1
- Cisco PIX Security Appliance 7.2
- Cisco PIX Security Appliance 8.0
- Cisco PIX Security Appliance 8.1
Sep 03, 2008
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 the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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.