Secunia Security Advisory – Ubuntu has issued an update for graphviz. This fixes a vulnerability, which can be exploited by malicious, local users to perform certain actions on a vulnerable system with escalated privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/40745/sa17207.txt
Source: https://packetstormsecurity.com/files/40745/Secunia-Security-Advisory-17207.html