graphicsmagick - security update

Bob Friesenhahn discovered a command injection vulnerability in
Graphicsmagick, a program suite for image manipulation. An attacker with
control on input image or the input filename can execute arbitrary
commands with the privileges of the user running the application.

This update removes the possibility of using pipe (|) in filenames to
interact with graphicsmagick.

For Debian 7 Wheezy, these problems have been fixed in version
1.3.16-1.1+deb7u2.

We recommend that you upgrade your graphicsmagick packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: <https://wiki.debian.org/LTS&gt;