Secunia Security Advisory – Debian has issued an update for ntp. 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/83648/sa37636.txt
Source: https://packetstormsecurity.com/files/83648/Secunia-Security-Advisory-37636.html