Secunia Security Advisory – MrDoug has discovered a security issue in Steam, which can be exploited by malicious, local users to gain escalated privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/80200/sa36217.txt
Source: https://packetstormsecurity.com/files/80200/Secunia-Security-Advisory-36217.html