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Cisco Security

Malformed SIP Message

 
Signature ID: 30059/0
Original Release:S514
Release:S593 (download)
Original Release Date:2010 September 22
Latest Release Date:2011 September 07
Default Enabled:False
Default Retired:True
Alarm Severity:Medium
Fidelity:85 

Description

This signature triggers on an attempt to exploit a Session Initiation Protocol (SIP) packet processing vulnerability in certain versions of the Cisco Call Manager. Successful exploitation of the vulnerability can result in a denial of service condition that may interrupt voice services. This signature recognizes the attempt over UDP.The Vulnerability in Cisco Call Manager is in Cisco Bug ID CSCsz43987.This vulnerability has been assigned CVE-2009-2051.

Recommended Filter

There are no suggested filters.

Benign Triggers

The potential for false positives exists, as such, this signature ships disabled by default and should only be used if running a vulnerable version of CCM.

Download

To download this and other IPS update files, please go to Cisco Secure Software Download.

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