USN-3060-1: GD library vulnerabilities

Ubuntu Security Notice USN-3060-1

10th 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 version:

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

CVE-2016-6132,

CVE-2016-6207,

CVE-2016-6214

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