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)
5 November 2009
A security issue affects these releases of Ubuntu and its derivatives:
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)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the necessary changes.
Vulmon