Secunia Security Advisory – Red Hat has issued an update for ruby. This fixes some vulnerabilities, which can be exploited by malicious people to bypass certain security restrictions or cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/71153/sa32372.txt
Source: https://packetstormsecurity.com/files/71153/Secunia-Security-Advisory-32372.html