source: http://www.securityfocus.com/bid/29760/info

Skulltag is prone to a vulnerability that can cause denial-of-service conditions.

A successful attack will deny service to legitimate users.

Skulltag 0.97d2-RC3 is vulnerable; other versions may also be affected. 

https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/31932.zip