A pngquant security update has been released for Debian GNU/Linux 8 LTS to address a buffer overflow write issue triggered by a maliciously crafted png image, which could lead into denial of service or other issues.

DLA 2257-1: pngquant security update

Package : pngquant
Version : 2.3.0-1+deb8u1
CVE ID : CVE-2016-5735

It was found that pngquant, a PNG (Portable Network Graphics) image
optimising utility, is susceptible to a buffer overflow write issue
triggered by a maliciously crafted png image, which could lead into
denial of service or other issues.

For Debian 8 "Jessie", this problem has been fixed in version
2.3.0-1+deb8u1.

We recommend that you upgrade your pngquant 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