Secunia Security Advisory – Ubuntu has issued an update for bind9. This fixes multiple vulnerabilities, which can be exploited by malicious people to poison the DNS cache.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/85490/sa38240.txt
Source: https://packetstormsecurity.com/files/85490/Secunia-Security-Advisory-38240.html