The network diagnostics tool (CommandLineServlet) in the Appliance Manager command line utility (CLU) in Websense TRITON 7.8.3 and V-Series appliances before 7.8.4 Hotfix 02 allows remote authenticated users to execute arbitrary commands via shell metacharacters in the "second" parameter of a command, as demonstrated by the Destination parameter in the ping command.
https://www.exploit-db.com/exploits/36423/
http://www.websense.com/support/article/kbarticle/October-2014-Hotfix-Summary-for-Websense-Solutions
http://www.securityfocus.com/archive/1/534910/100/0/threaded