Secunia Security Advisory – Ubuntu has issued an update for netpbm. This fixes two vulnerabilities, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially to compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/41740/sa17679.txt
Source: https://packetstormsecurity.com/files/41740/Secunia-Security-Advisory-17679.html