Unspecified vulnerability in the SIP inspection feature on Cisco Adaptive Security Appliances (ASA) 5500 series devices with software before 8.3(2) allows remote attackers to cause a denial of service (device crash) by making many SIP calls, aka Bug ID CSCte20030.
https://exchange.xforce.ibmcloud.com/vulnerabilities/64576
http://www.securitytracker.com/id?1024963
http://www.securityfocus.com/bid/45768
http://www.cisco.com/en/US/docs/security/asa/asa83/release/notes/asarn83.pdf