Secunia Security Advisory – Red Hat has issued an update for ruby. This fixes some vulnerabilities, which can be exploited by malicious people to conduct spoofing attacks and cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/78917/sa35699.txt
Source: https://packetstormsecurity.com/files/78917/Secunia-Security-Advisory-35699.html