Buffer overflow in multiple Multi-Tech Systems MultiVOIP devices with firmware before x.08 allows remote attackers to execute arbitrary code via a long INVITE field in a Session Initiation Protocol (SIP) packet.
https://exchange.xforce.ibmcloud.com/vulnerabilities/23416
http://www.vupen.com/english/advisories/2005/2781
http://www.securitylab.net/research/2005/12/buffer_overflow_in_multitech_v.html
http://www.securityfocus.com/bid/15711
http://www.securityfocus.com/archive/1/418653/100/0/threaded
http://securitytracker.com/id?1015314