This signature triggers on an attempt to exploit a Session Initiation Protocol (SIP) packet processing vulnerability in certain versions of the Cisco Unified Communications Manager, Cisco IOS and Cisco PGW softswitch. 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 PGW softswitch is documented in Cisco Bug ID CSCsj98521 and has been assigned the CVE identifier CVE-2010-1562.The Vulnerability in Cisco IOS is documented in Cisco Bug ID CSCti48483 and has been assigned the CVE identifier CVE-2011-3278.
There are no suggested filters.
The potential for false positives exists, as such, This signature should only be used if running a vulnerable version of PGW softswitch. In addition, alerts should be filtered to exclude everything except the destination IP addresses of those vulnerable servers.
LEGAL DISCLAIMER THE INFORMATION ON THIS PAGE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION CONTAINED HEREIN, OR MATERIALS LINKED FROM THE DOCUMENT, IS AT YOUR OWN RISK. INFORMATION IN THIS DOCUMENT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.