USN-2987-1: GD library vulnerabilities

Ubuntu Security Notice USN-2987-1

31st May, 2016

libgd2 vulnerabilities

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

• Ubuntu 16.04 LTS
• Ubuntu 15.10
• Ubuntu 14.04 LTS
• Ubuntu 12.04 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 color
tables in XPM images. If a user or automated system were tricked into
processing a specially crafted XPM image, an attacker could cause a denial
of service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
(CVE-2014-2497)

It was discovered that the GD library incorrectly handled certain malformed
GIF images. If a user or automated system were tricked into processing a
specially crafted GIF image, an attacker could cause a denial of service.
This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
(CVE-2014-9709)

It was discovered that the GD library incorrectly handled memory when using
gdImageFillToBorder(). A remote attacker could possibly use this issue to
cause a denial of service. (CVE-2015-8874)

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 applied to Ubuntu 14.04 LTS,
Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2015-8877)

Hans Jerry Illikainen discovered that the GD library incorrectly handled
certain malformed GD images. If a user or automated system were tricked
into processing a specially crafted GD image, an attacker could cause a
denial of service or possibly execute arbitrary code. (CVE-2016-3074)

Update instructions

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

Ubuntu 16.04 LTS:

libgd3 2.1.1-4ubuntu0.16.04.1

Ubuntu 15.10:

libgd3 2.1.1-4ubuntu0.15.10.1

Ubuntu 14.04 LTS:

libgd3 2.1.0-3ubuntu0.1

Ubuntu 12.04 LTS:

libgd2-xpm 2.0.36~rc1~dfsg-6ubuntu2.1

libgd2-noxpm 2.0.36~rc1~dfsg-6ubuntu2.1

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

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

References

CVE-2014-2497, CVE-2014-9709, CVE-2015-8874, CVE-2015-8877, CVE-2016-3074

from Ubuntu Security Notices http://ift.tt/25xfX1B