Technical Description

Multiple vulnerabilities have been identified in Cisco PIX and ASA, which could be exploited by attackers to bypass security restrictions or cause a denial of service.

The first issue is caused by an unspecified error which could allow attackers to bypass VPN authentication and gain unauthorized access to appliances configured for IPSec or SSL-based remote access VPN and Windows NT Domain authentication.

The second vulnerability is caused by an error when processing malformed IPv6 packets, which could be exploited by attackers to cause a vulnerable applicance to reload, creating a denial of service condition.

The third issue is caused by a memory leak in the initialization code for the hardware crypto accelerator.

Affected Products

Cisco ASA 5500 Series Adaptive Security Appliances 7.x
Cisco ASA 5500 Series Adaptive Security Appliances 8.x
Cisco PIX Security Appliances 7.x
Cisco PIX Security Appliances 8.x

Solution

Upgrade to fixed versions :
http://www.cisco.com/warp/public/707/cisco-sa-20081022-asa.shtml

References

http://www.vupen.com/english/advisories/2008/2899
http://www.cisco.com/warp/public/707/cisco-sa-20081022-asa.shtml

Credits

Vulnerabilities reported by the vendor.

ChangeLog

2008-10-23 : Initial release

Vulnerability Management

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