CVE-2007-2297
The SIP channel driver (chan_sip) in Asterisk before 1.2.18 and 1.4.x before 1.4.3 does not properly parse SIP UDP packets that do not contain a valid response code, which allows remote attackers to cause a denial of service (crash).
Date published : 2007-04-26
http://www.securityfocus.com/bid/24359
http://www.securityfocus.com/archive/1/466882/100/0/threaded