Ubuntu 16.04 LTS USN-3030-1 Critical: libgd Denial Of Service

ubuntu

July 11, 2016

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

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 memory when using

gdImageScaleTwoPass(). A remote attacker could possibly use this issue to

cause a denial of service. This issue only affected Ubuntu 14.04 LTS.

(CVE-2013-7456)

It was discovered that the GD library incorrectly handled certain malformed

XBM images. If a user or automated system were tricked into processing a

specially crafted XBM image, an attacker could cause a denial of service.

This issue only affected Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04

LTS. (CVE-2016-5116)

It was discovered that the GD library incorrectly handled memory when using

_gd2GetHeader(). A remote attacker could possibly use this issue to cause a

denial of service or possibly execute arbitrary code. (CVE-2016-5766)

It was discovered that the G...

Read the Full Advisory

Topics Covered

security advisory denial of service critical issue software update Ubuntu image processing libgd

Update Instructions

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

Ubuntu 16.04 LTS:
  libgd3                          2.1.1-4ubuntu0.16.04.2

Ubuntu 15.10:
  libgd3                          2.1.1-4ubuntu0.15.10.2

Ubuntu 14.04 LTS:
  libgd3                          2.1.0-3ubuntu0.2

Ubuntu 12.04 LTS:
  libgd2-noxpm                    2.0.36~rc1~dfsg-6ubuntu2.2
  libgd2-xpm                      2.0.36~rc1~dfsg-6ubuntu2.2

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