Debian Security Advisory DSA 993-2 – Tavis Ormandy noticed that gnupg, the GNU privacy guard – a free PGP replacement, can be tricked to emit a “good signature” status message when a valid signature is included which does not belong to the data packet. This update basically adds fixed packages for woody whose version turned out to be vulnerable as well.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/44611/dsa-993-2.txt
Source: https://packetstormsecurity.com/files/44611/Debian-Linux-Security-Advisory-993-2.html