Memory leak in the Certificate Trust List (CTL) Provider service in Cisco Unified Communications Manager (CUCM) 5.x before 5.1(3) allows remote attackers to cause a denial of service (memory consumption and service interruption) via a series of malformed TCP packets, as demonstrated by TCPFUZZ, aka Bug ID CSCsj80609.
https://exchange.xforce.ibmcloud.com/vulnerabilities/42410
http://www.vupen.com/english/advisories/2008/1533
http://www.securityfocus.com/bid/29221
http://www.cisco.com/en/US/products/products_security_advisory09186a0080995688.shtml