USN-4107-1: GIFLIB vulnerabilities

20 August 2019

giflib vulnerabilities

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

  • Ubuntu 19.04
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in GIFLIB.

Software Description

  • giflib - library for GIF images (utilities)

Details

It was discovered that GIFLIB incorrectly handled certain GIF files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2016-3977)

It was discovered that GIFLIB incorrectly handled certain GIF files. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-11490, CVE-2019-15133)

Update instructions

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

Ubuntu 19.04
giflib-tools - 5.1.4-3ubuntu0.1
libgif7 - 5.1.4-3ubuntu0.1
Ubuntu 18.04 LTS
giflib-tools - 5.1.4-2ubuntu0.1
libgif7 - 5.1.4-2ubuntu0.1
Ubuntu 16.04 LTS
giflib-tools - 5.1.4-0.3~16.04.1
libgif7 - 5.1.4-0.3~16.04.1

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