Cisco ASA SSL VPN denial of service
|cisco-asa-sslvpn-dos (44868)||Medium Risk|
Cisco ASA devices are vulnerable to a denial of service, caused by a memory leak error when configured to terminate clientless VPN connections. A remote attacker could exploit this vulnerability using a specially-crafted SSL 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-2008-2734: Memory leak in the crypto functionality in Cisco 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 clientless SSL VPN endpoint, allows remote attackers to cause a denial of service (memory consumption and VPN hang) via a crafted SSL or HTTP packet, aka Bug ID CSCso66472.
- OSVDB ID: 47922: Cisco PIX / ASA SSL VPN Crafted Packet Remote Memory Leak Remote DoS
- SA31730: Cisco ASA and PIX Security Appliances Multiple Vulnerabilities
- SECTRACK ID: 1020812: Cisco ASA SSL VPN Bugs Let Remote Users Deny Service
- Cisco Adaptive Security Appliance 7.2
- Cisco Adaptive Security Appliance 8.0
- Cisco Adaptive Security Appliance 8.1
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.