Secunia Security Advisory – Ubuntu has issued an update for tiff. This fixes some vulnerabilities, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/48790/sa21338.txt
Source: https://packetstormsecurity.com/files/48790/Secunia-Security-Advisory-21338.html