[USN-5068-1] GD library vulnerabilities

========================================================================== 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: ubuntu.com/security/notices/USN-5068-1 CVE-2017-6363, CVE-2021-38115, CVE-2021-40145
Package Information: launchpad.net/ubuntu/+source/libgd2/2.3.0-2ubuntu0.1 launchpad.net/ubuntu/+source/libgd2/2.2.5-5.2ubuntu2.1 launchpad.net/ubuntu/+source/libgd2/2.2.5-4ubuntu0.5