USN-3060-1: GD library vulnerabilities

10 August 2016

libgd2 vulnerabilities

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

  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

The GD library could be made to crash or run programs if it processed a specially crafted image file.

Software Description

  • libgd2 - GD Graphics Library

Details

It was discovered that the GD library incorrectly handled certain malformed TGA images. If a user or automated system were tricked into processing a specially crafted TGA image, an attacker could cause a denial of service. (CVE-2016-6132, CVE-2016-6214)

It was discovered that the GD library incorrectly handled memory when using gdImageScale(). A remote attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code. (CVE-2016-6207)

Update instructions

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

Ubuntu 16.04 LTS
libgd3 - 2.1.1-4ubuntu0.16.04.3
Ubuntu 14.04 LTS
libgd3 - 2.1.0-3ubuntu0.3

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