Debian Security Advisory 1743-1 – Two buffer overflows have been found in the GIF image parsing code of Tk, a cross-platform graphical toolkit, which could lead to the execution of arbitrary code.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/75786/dsa-1743-1.txt
Source: https://packetstormsecurity.com/files/75786/Debian-Linux-Security-Advisory-1743-1.html