Secunia Security Advisory – Red Hat has issued an update for ntp. This fixes some vulnerabilities, 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/77648/sa35138.txt
Source: https://packetstormsecurity.com/files/77648/Secunia-Security-Advisory-35138.html