It was discovered that c-ares incorrectly parsed certain SOA replies. A remote attacker could possibly use this issue to cause c-res to crash, resulting in a denial of service.
{ "availability": "No subscription required", "binaries": [ { "binary_version": "1.15.0-1ubuntu0.4", "binary_name": "libc-ares-dev" }, { "binary_version": "1.15.0-1ubuntu0.4", "binary_name": "libc-ares2" }, { "binary_version": "1.15.0-1ubuntu0.4", "binary_name": "libc-ares2-dbgsym" } ] }