Memory leak on Cisco Adaptive Security Appliances (ASA) 5500 Series and PIX Security Appliances 7.0 before 7.0(8)6, 7.1 before 7.1(2)82, 7.2 before 7.2(4)30, 8.0 before 8.0(4)28, and 8.1 before 8.1(2)19 allows remote attackers to cause a denial of service (memory consumption or device reload) via a crafted TCP packet.
http://www.vupen.com/english/advisories/2009/0981
http://www.securitytracker.com/id?1022015
http://www.securityfocus.com/bid/34429
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a994f6.shtml