Secunia Security Advisory – Ubuntu has issued an update for tiff. This fixes a vulnerability, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/47118/sa20501.txt
Source: https://packetstormsecurity.com/files/47118/Secunia-Security-Advisory-20501.html