========================================================================= Ubuntu Security Notice USN-5068-1 September 08, 2021 libgd2 vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Several security issues were fixed in GD library. Software Description: - libgd2: GD Graphics Library Details: It was discovered that GD Graphics Library incorrectly handled certain GD and GD2 files. An attacker could possibly use this issue to cause a crash or expose sensitive information. This issue only affected Ubuntu 20.04 LTS, Ubuntu 18.04 LTS, Ubuntu 16.04 ESM, and Ubuntu 14.04 ESM. (CVE-2017-6363) It was discovered that GD Graphics Library incorrectly handled certain TGA files. An attacker could possibly use this issue to cause a denial of service or expose sensitive information. (CVE-2021-381) It was discovered that GD Graphics Library incorrectly handled certain files. An attacker could possibly use this issue to cause a crash. (CVE-2021-40145) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: libgd3 2.3.0-2ubuntu0.1 Ubuntu 20.04 LTS: libgd3 2.2.5-5.2ubuntu2.1 Ubuntu 18.04 LTS: libgd3 2.2.5-4ubuntu0.5 Ubuntu 16.04 ESM: libgd3 2.1.1-4ubuntu0.16.04.12+esm1 Ubuntu 14.04 ESM: libgd3 2.1.0-3ubuntu0.11+esm2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5068-1 CVE-2017-6363, CVE-2021-38115, CVE-2021-40145 Package Information: https://launchpad.net/ubuntu/+source/libgd2/2.3.0-2ubuntu0.1 https://launchpad.net/ubuntu/+source/libgd2/2.2.5-5.2ubuntu2.1 https://launchpad.net/ubuntu/+source/libgd2/2.2.5-4ubuntu0.5