source: http://www.securityfocus.com/bid/5908/info

A vulnerability has been discovered in Citrix.

It is possible for an attacker to obtain information regarding Published Applications, by sending specially crafted requests to the Citrix server, and examining responses.

By bruteforcing a Citrix Published Applications list, it may be possible for an attacker to launch further attacks. 

https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/bin-sploits/21913.tar.gz