source: http://www.securityfocus.com/bid/41361/info

Multiple Tripwire Interactive games are prone to multiple remote denial-of-service vulnerabilities because the applications fail to properly handle specially crafted network packets.

An attacker can exploit these issues to cause the applications to become unresponsive or to crash the affected game servers, denying service to legitimate users.

The following games are vulnerable:

Killing Floor
Red Orchestra
Darkest Hour: Europe '44-'45
Mare Nostrum 

https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/bin-sploits/34251.zip