Debian Security Advisory DSA 890-1 – Chris Evans discovered several security related problems in libungif4, a shared library for GIF images.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/41437/dsa-890-1.txt
Source: https://packetstormsecurity.com/files/41437/Debian-Linux-Security-Advisory-890-1.html