Secunia Security Advisory – Debian has issued an update for barnowl. This fixes a vulnerability, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/93546/sa41260.txt
Source: https://packetstormsecurity.com/files/93546/Secunia-Security-Advisory-41260.html