USN-3755-1: GD vulnerabilities

27 August 2018

libgd2 vulnerabilities

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

  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in GD.

Software Description

  • libgd2 - GD Graphics Library

Details

It was discovered that GD incorrectly handled certain images. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-1000222)

It was discovered that GD incorrectly handled certain GIF files. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-5711)

Update instructions

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

Ubuntu 18.04 LTS
libgd-tools - 2.2.5-4ubuntu0.2
libgd3 - 2.2.5-4ubuntu0.2
Ubuntu 16.04 LTS
libgd-tools - 2.1.1-4ubuntu0.16.04.10
libgd3 - 2.1.1-4ubuntu0.16.04.10
Ubuntu 14.04 LTS
libgd-tools - 2.1.0-3ubuntu0.10
libgd3 - 2.1.0-3ubuntu0.10

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