Cisco Security Agent (CSA) for Linux 4.5 before 4.5.1.657 and 5.0 before 5.0.0.193, as used by Unified CallManager (CUCM) and Unified Presence Server (CUPS), allows remote attackers to cause a denial of service (resource consumption) via a port scan with certain options.
https://exchange.xforce.ibmcloud.com/vulnerabilities/29829
http://www.vupen.com/english/advisories/2006/4198
http://www.securityfocus.com/bid/20737
http://www.cisco.com/en/US/products/products_security_advisory09186a00807693c7.shtml