ovalarmsrv in HP OpenView Network Node Manager (OV NNM) 7.51, 7.53, and possibly other versions allows remote attackers to cause a denial of service (hang) via certain requests that do not provide all required arguments.
https://exchange.xforce.ibmcloud.com/vulnerabilities/41694
http://www.vupen.com/english/advisories/2008/1214/references
http://www.securitytracker.com/id?1019839
http://www.securityfocus.com/archive/1/490771