========================================================================== Ubuntu Security Notice USN-5408-1 May 10, 2022 dnsmasq vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 21.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Dnsmasq could be made to execute arbitrary code or expose sensitive information if it received a specially crafted input. Software Description: - dnsmasq: Small caching DNS proxy and DHCP/TFTP server Details: Petr Menšík and Richard Johnson discovered that Dnsmasq incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code or expose sensitive information. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: dnsmasq 2.86-1.1ubuntu0.1 dnsmasq-base 2.86-1.1ubuntu0.1 dnsmasq-utils 2.86-1.1ubuntu0.1 Ubuntu 21.10: dnsmasq 2.85-1ubuntu2.1 dnsmasq-base 2.85-1ubuntu2.1 dnsmasq-utils 2.85-1ubuntu2.1 Ubuntu 20.04 LTS: dnsmasq 2.80-1.1ubuntu1.5 dnsmasq-base 2.80-1.1ubuntu1.5 dnsmasq-utils 2.80-1.1ubuntu1.5 Ubuntu 18.04 LTS: dnsmasq 2.79-1ubuntu0.6 dnsmasq-base 2.79-1ubuntu0.6 dnsmasq-utils 2.79-1ubuntu0.6 Ubuntu 16.04 ESM: dnsmasq 2.75-1ubuntu0.16.04.10+esm1 dnsmasq-base 2.75-1ubuntu0.16.04.10+esm1 dnsmasq-utils 2.75-1ubuntu0.16.04.10+esm1 Ubuntu 14.04 ESM: dnsmasq 2.68-1ubuntu0.2+esm1 dnsmasq-base 2.68-1ubuntu0.2+esm1 dnsmasq-utils 2.68-1ubuntu0.2+esm1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5408-1 CVE-2022-0934 Package Information: https://launchpad.net/ubuntu/+source/dnsmasq/2.86-1.1ubuntu0.1 https://launchpad.net/ubuntu/+source/dnsmasq/2.85-1ubuntu2.1 https://launchpad.net/ubuntu/+source/dnsmasq/2.80-1.1ubuntu1.5 https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1ubuntu0.6