CVE-2012-4618
The SIP ALG feature in the NAT implementation in Cisco IOS 12.2, 12.4, and 15.0 through 15.2 allows remote attackers to cause a denial of service (device reload) via transit IP packets, aka Bug ID CSCtn76183.
Date published : 2012-09-26
http://www.securityfocus.com/bid/55693
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-nat