Secunia Security Advisory – Red Hat has issued an update for ruby. This fixes a vulnerability, which can be exploited by malicious people to cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/46202/sa20024.txt
Source: https://packetstormsecurity.com/files/46202/Secunia-Security-Advisory-20024.html