Memory leak in Avaya TN2602AP IP Media Resource 320 circuit pack before vintage 9 firmware allows remote attackers to cause a denial of service (memory consumption) via crafted VoIP packets.
http://www.vupen.com/english/advisories/2005/2685
http://www.securityfocus.com/bid/15668
http://support.avaya.com/elmodocs2/security/ASA-2005-231.pdf