Secunia Security Advisory – Ubuntu has issued an update for libwmf. This fixes a vulnerability, which can be exploited by malicious people to cause a DoS (Denial of Service) or compromise an application using the library.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/77295/sa35001.txt
Source: https://packetstormsecurity.com/files/77295/Secunia-Security-Advisory-35001.html

