Cisco PIX 500 and ASA 5500 Series Security Appliances 6.x before 6.3(5.115), 7.0 before 7.0(5.2), and 7.1 before 7.1(2.5), and the FWSM 3.x before 3.1(3.24), when the "inspect sip" option is enabled, allows remote attackers to cause a denial of service (device reboot) via malformed SIP packets.
https://exchange.xforce.ibmcloud.com/vulnerabilities/32501
https://exchange.xforce.ibmcloud.com/vulnerabilities/32487
http://www.vupen.com/english/advisories/2007/0608
http://www.securitytracker.com/id?1017652
http://www.securityfocus.com/bid/22562
http://www.securityfocus.com/bid/22561
http://www.kb.cert.org/vuls/id/430969
http://www.cisco.com/en/US/products/products_security_advisory09186a00807e2484.shtml
http://www.cisco.com/en/US/products/products_security_advisory09186a00807e2481.shtml
http://securitytracker.com/id?1017651
http://secunia.com/advisories/24180
http://secunia.com/advisories/24179