GameSpy SDK CD-Key Validation Toolkit, as used by many online games, allows remote attackers to bypass the CD key validation by sending a spoofed \disc\ command, which tells the server the CD key is no longer in use.Referenceshttp://secunia.com/advisories/15254/https://exchange.xforce.ibmcloud.com/vulnerabilities/20422http://aluigi.altervista.org/adv/gskeyinuse-adv.txthttp://marc.info/?l=bugtraq&m=111539740212818&w=2
