[SECURITY] [DLA 1795-1] graphicsmagick security update

Package : graphicsmagick
Version : 1.3.20-3+deb8u7
CVE ID : CVE-2019-11473 CVE-2019-11474 CVE-2019-11505 CVE-2019-11506

Multiple vulnerabilities have been discovered in graphicsmagick, the image
processing toolkit:

CVE-2019-11473

The WriteMATLABImage function (coders/mat.c) is affected by a heap-based
buffer overflow. Remote attackers might leverage this vulnerability to
cause denial of service or any other unspecified impact via crafted Matlab
matrices.

CVE-2019-11474

The WritePDBImage function (coders/pdb.c) is affected by a heap-based
buffer overflow. Remote attackers might leverage this vulnerability to
cause denial of service or any other unspecified impact via a crafted Palm
Database file.

CVE-2019-11505
CVE-2019-11506

The XWD module (coders/xwd.c) is affected by multiple heap-based
buffer overflows and arithmetic exceptions. Remote attackers might leverage
these various flaws to cause denial of service or any other unspecified
impact via crafted XWD files.

For Debian 8 "Jessie", these problems have been fixed in version
1.3.20-3+deb8u7.

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