A libgd2 security update has been released for Debian GNU/Linux 8 LTS to address a vulnerability whereby an attacker can employ a specific function call sequence to trigger a NULL pointer dereference, subsequently crash the application using libgd2, and create a denial of service.

Package : libgd2
Version : 2.1.0-5+deb8u14
CVE ID : CVE-2018-14553
Debian Bug : 951287

A vulnerability was discovered in libgd2, the GD graphics library,
whereby an attacker can employ a specific function call sequence to
trigger a NULL pointer dereference, subsequently crash the application
using libgd2, and create a denial of service.

For Debian 8 "Jessie", this problem has been fixed in version
2.1.0-5+deb8u14.

We recommend that you upgrade your libgd2 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