From: Secunia Security Advisories (sec-advsecunia.com)
Date: Thu Oct 18 2007 - 19:07:05 CDT

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TITLE:
Cisco PIX and ASA TLS/MGCP Packet Processing Denial of Service

SECUNIA ADVISORY ID:
SA27193

VERIFY ADVISORY:
http://secunia.com/advisories/27193/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
From remote

OPERATING SYSTEM:
Cisco Adaptive Security Appliance (ASA) 8.x
http://secunia.com/product/16163/
Cisco Adaptive Security Appliance (ASA) 7.x
http://secunia.com/product/6115/
Cisco PIX 7.x
http://secunia.com/product/6102/
Cisco PIX 8.x
http://secunia.com/product/16164/

DESCRIPTION:
Cisco has acknowledged some vulnerabilities in Cisco PIX and ASA
appliances, which can be exploited by malicious people to cause a DoS
(Denial of Service).

1) An unspecified error exists within the handling of Transport Layer
Security (TLS) packets. This can be exploited to reload an affected
device by sending specially crafted TLS packets.

2) An unspecified error exists within the handling of Media Gateway
Control Protocol (MGCP) packets. This can be exploited to reload an
affected device by sending specially crafted MGCP packets.

Successful exploitation of this vulnerability requires that the MGCP
application layer protocol inspection is enabled (disabled by
default).

SOLUTION:
Apply updates (please see the vendor's advisory for details).

PIX:
http://www.cisco.com/pcgi-bin/tablebuild.pl/pix?psrtdcat20e2

ASA:
http://www.cisco.com/pcgi-bin/tablebuild.pl/asa?psrtdcat20e2

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://www.cisco.com/warp/public/707/cisco-sa-20071017-asa.shtml

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