PT-2025-51134

It was discovered that c-ares incorrectly handled terminating certain queries after a maximum number of attempts. An attacker could possibly use this issue to cause c-ares to crash, resulting in a denial of service. Update Instructions: Run sudo pro fix USN-7925-1 to fix the vulnerability. The...

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...

Ubuntu 20.10 : c-ares vulnerability (USN-4638-1)

The remote Ubuntu 20.10 host has packages installed that are affected by a vulnerability as referenced in the USN-4638-1 advisory. c-ares could be made to denial of service if it received a specially crafted DNS request. Tenable has extracted the preceding description block directly from the Ubun...