Tor before 0.4.5.7 allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target, aka TROVE-2021-001.
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1", "binary_name": "tor" }, { "binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1", "binary_name": "tor-dbg" }, { "binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1", "binary_name": "tor-dbgsym" }, { "binary_version": "0.2.9.14-1ubuntu1~16.04.3+esm1", "binary_name": "tor-geoipdb" } ] }
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "0.3.2.10-1ubuntu0.2~esm2", "binary_name": "tor" }, { "binary_version": "0.3.2.10-1ubuntu0.2~esm2", "binary_name": "tor-dbgsym" }, { "binary_version": "0.3.2.10-1ubuntu0.2~esm2", "binary_name": "tor-geoipdb" } ] }
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "0.4.2.7-1ubuntu0.1~esm1", "binary_name": "tor" }, { "binary_version": "0.4.2.7-1ubuntu0.1~esm1", "binary_name": "tor-dbgsym" }, { "binary_version": "0.4.2.7-1ubuntu0.1~esm1", "binary_name": "tor-geoipdb" } ] }