Ubuntu 18.04 LTS / 20.04 LTS : c-ares vulnerability (USN-5034-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5034-1 advisory. Philipp Jeitner and Haya Shulman discovered that c-ares incorrectly validated certain hostnames returned by DNS servers. A remote attacker could...