Debian Security Advisory 1770-1 – Several vulnerabilities have been found in imp4, a webmail component for the horde framework.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/76597/dsa-1770-1.txt
Source: https://packetstormsecurity.com/files/76597/Debian-Linux-Security-Advisory-1770-1.html