Chris Siebenmann discovered that tar incorrectly handled extracting files resized during extraction when invoked with the --sparse flag. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-20482)
Daniel Axtens discovered that tar incorrectly handled certain malformed tar files. If a user or automated system were tricked into processing a specially crafted tar archive, a remote attacker could use this issue to cause tar to crash, resulting in a denial of service. (CVE-2019-9923)
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_version": "1.27.1-1ubuntu0.1+esm1", "binary_name": "tar" }, { "binary_version": "1.27.1-1ubuntu0.1+esm1", "binary_name": "tar-dbgsym" }, { "binary_version": "1.27.1-1ubuntu0.1+esm1", "binary_name": "tar-scripts" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_version": "1.30+dfsg-7ubuntu0.20.04.1", "binary_name": "tar" }, { "binary_version": "1.30+dfsg-7ubuntu0.20.04.1", "binary_name": "tar-dbgsym" }, { "binary_version": "1.30+dfsg-7ubuntu0.20.04.1", "binary_name": "tar-scripts" } ] }