========================================================================== Ubuntu Security Notice USN-3213-1 February 28, 2017 libgd2 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.10 - Ubuntu 16.04 LTS - 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: Stefan Esser discovered that the GD library incorrectly handled memory when processing certain images. If a user or automated system were tricked into processing a specially crafted image, an attacker could cause a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-10166) It was discovered that the GD library incorrectly handled certain malformed images. If a user or automated system were tricked into processing a specially crafted image, an attacker could cause a denial of service. (CVE-2016-10167) It was discovered that the GD library incorrectly handled certain malformed images. If a user or automated system were tricked into processing a specially crafted image, an attacker could cause a denial of service, or possibly execute arbitrary code. (CVE-2016-10168) Ibrahim El-Sayed 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. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-6906) Ibrahim El-Sayed discovered that the GD library incorrectly handled certain malformed WebP images. If a user or automated system were tricked into processing a specially crafted WebP image, an attacker could cause a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-6912) It was discovered that the GD library incorrectly handled creating oversized images. If a user or automated system were tricked into creating a specially crafted image, an attacker could cause a denial of service. (CVE-2016-9317) It was discovered that the GD library incorrectly handled filling certain images. If a user or automated system were tricked into filling an image, an attacker could cause a denial of service. (CVE-2016-9933) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.10: libgd3 2.2.1-1ubuntu3.3 Ubuntu 16.04 LTS: libgd3 2.1.1-4ubuntu0.16.04.6 Ubuntu 14.04 LTS: libgd3 2.1.0-3ubuntu0.6 Ubuntu 12.04 LTS: libgd2-noxpm 2.0.36~rc1~dfsg-6ubuntu2.4 libgd2-xpm 2.0.36~rc1~dfsg-6ubuntu2.4 In general, a standard system update will make all the necessary changes. References: http://www.ubuntu.com/usn/usn-3213-1 CVE-2016-10166, CVE-2016-10167, CVE-2016-10168, CVE-2016-6906, CVE-2016-6912, CVE-2016-9317, CVE-2016-9933 Package Information: https://launchpad.net/ubuntu/+source/libgd2/2.2.1-1ubuntu3.3 https://launchpad.net/ubuntu/+source/libgd2/2.1.1-4ubuntu0.16.04.6 https://launchpad.net/ubuntu/+source/libgd2/2.1.0-3ubuntu0.6 https://launchpad.net/ubuntu/+source/libgd2/2.0.36~rc1~dfsg-6ubuntu2.4