========================================================================== Ubuntu Security Notice USN-5688-1 October 19, 2022 libksba vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Libksba could be made to crash or run programs if it decoded specially crafted data. Software Description: - libksba: X.509 and CMS support library Details: It was discovered that an integer overflow could be triggered in Libksba when decoding certain data. An attacker could use this issue to cause a denial of service (application crash) or possibly execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: libksba8 1.6.0-2ubuntu0.1 Ubuntu 20.04 LTS: libksba8 1.3.5-2ubuntu0.20.04.1 Ubuntu 18.04 LTS: libksba8 1.3.5-2ubuntu0.18.04.1 Ubuntu 16.04 ESM: libksba8 1.3.3-1ubuntu0.16.04.1+esm1 Ubuntu 14.04 ESM: libksba8 1.3.0-3ubuntu0.14.04.2+esm1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5688-1 CVE-2022-3515 Package Information: https://launchpad.net/ubuntu/+source/libksba/1.6.0-2ubuntu0.1 https://launchpad.net/ubuntu/+source/libksba/1.3.5-2ubuntu0.20.04.1 https://launchpad.net/ubuntu/+source/libksba/1.3.5-2ubuntu0.18.04.1