========================================================================== Ubuntu Security Notice USN-5907-1 March 02, 2023 c-ares vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: c-ares could be made to crash or run programs if it processed specially crafted input. Software Description: - c-ares: library for asynchronous name resolution Details: It was discovered that c-ares incorrectly handled certain sortlist strings. A remote attacker could use this issue to cause c-ares to crash, resulting in a denial of service, or possibly execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.10: libc-ares2 1.18.1-1ubuntu0.22.10.1 Ubuntu 22.04 LTS: libc-ares2 1.18.1-1ubuntu0.22.04.1 Ubuntu 20.04 LTS: libc-ares2 1.15.0-1ubuntu0.2 Ubuntu 18.04 LTS: libc-ares2 1.14.0-1ubuntu0.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5907-1 CVE-2022-4904 Package Information: https://launchpad.net/ubuntu/+source/c-ares/1.18.1-1ubuntu0.22.10.1 https://launchpad.net/ubuntu/+source/c-ares/1.18.1-1ubuntu0.22.04.1 https://launchpad.net/ubuntu/+source/c-ares/1.15.0-1ubuntu0.2 https://launchpad.net/ubuntu/+source/c-ares/1.14.0-1ubuntu0.2