apng2gif vulnerability

A security issue affects these releases of Ubuntu and its
derivatives:

* Ubuntu 16.04 LTS

Summary

apng2gif could be made to expose sensitive information if it
opened a specifically crafted APNG file.

Software Description

* apng2gif - tool for converting APNG images to animated GIF
format

Details

Dileep Kumar Jallepalli discovered that apng2gif incorrectly
handled loading APNG files. An attacker could exploit this with a
crafted APNG file to access sensitive information. (CVE-2017-6960)

Update instructions

The problem can be corrected by updating your system to the
following package versions:

Ubuntu 16.04 LTS
apng2gif - 1.5-3+deb8u1build0.16.04.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary
changes.

References

* CVE-2017-6960

--- Mystic BBS v1.12 A46 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)