USN-854-1: GD library vulnerabilities

05 November 2009

GD library vulnerabilities

Releases

Packages

  • libgd2 -

Details

Tomas Hoger discovered that the GD library did not properly handle the
number of colors in 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-2009-3546)

It was discovered that the GD library did not properly handle incorrect
color indexes. An attacker could send specially crafted input to
applications linked against libgd2 and cause a denial of service or
possibly execute arbitrary code. This issue only affected Ubuntu 6.06 LTS.
(CVE-2009-3293)

It was discovered that the GD library did not properly handle 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 6.06 LTS. (CVE-2007-3475,
CVE-2007-3476)

It was discovered that the GD library did not properly handle large angle
degree values. An attacker could send specially crafted input to
applications linked against libgd2 and cause a denial of service. This
issue only affected Ubuntu 6.06 LTS. (CVE-2007-3477)

Update instructions

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

Ubuntu 9.10
Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04
Ubuntu 6.06

In general, a standard system upgrade is sufficient to effect the
necessary changes.