CVE-2010-1567
The SIP implementation on the Cisco PGW 2200 Softswitch with software before 9.8(1)S5 allows remote attackers to cause a denial of service (device crash) via a malformed header, aka Bug ID CSCsz13590.
Date published : 2010-05-14
http://www.securityfocus.com/bid/40126
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b2c519.shtml