It was discovered that Knot Resolver did not correctly handle certain client options. A remote attacker could send requests to malicous domains and cause a denial of service.
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "binaries": [ { "binary_version": "2.1.1-1ubuntu0.1~esm2", "binary_name": "knot-resolver" }, { "binary_version": "2.1.1-1ubuntu0.1~esm2", "binary_name": "knot-resolver-module-http" }, { "binary_version": "2.1.1-1ubuntu0.1~esm2", "binary_name": "libkres-dev" }, { "binary_version": "2.1.1-1ubuntu0.1~esm2", "binary_name": "libkres6" } ] }