Updated apng2gif packages has been released for Debian 7 LTS

Package : apng2gif
Version : 1.5-1+deb7u1
CVE ID : CVE-2017-6960
Debian Bug : #854367

It was discovered that apng2gif was vulnerable to an integer overflow
resulting in a heap-based buffer over-read/write. A remote attacker
could use this flaw to cause a denial of service (application crash)
via a crafted APNG file.

For Debian 7 "Wheezy", these problems have been fixed in version
1.5-1+deb7u1.

We recommend that you upgrade your apng2gif 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

  Apng2gif security update for Debian 7 LTS