Debian Security Advisory 1600-1 – It was discovered that sympa, a modern mailing list manager, would crash when processing certain types of malformed messages.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/67930/dsa-1600-1.txt
Source: https://packetstormsecurity.com/files/67930/Debian-Linux-Security-Advisory-1600-1.html