GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump. Exploitation to change the flow of control has not been demonstrated. The issue occurs in from_header in list.c via a V7 archive in which mtime has approximately 11 whitespace characters.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1.27.1-1ubuntu0.1+esm3", "binary_name": "tar" }, { "binary_version": "1.27.1-1ubuntu0.1+esm3", "binary_name": "tar-dbgsym" }, { "binary_version": "1.27.1-1ubuntu0.1+esm3", "binary_name": "tar-scripts" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1.28-2.1ubuntu0.2+esm2", "binary_name": "tar" }, { "binary_version": "1.28-2.1ubuntu0.2+esm2", "binary_name": "tar-dbgsym" }, { "binary_version": "1.28-2.1ubuntu0.2+esm2", "binary_name": "tar-scripts" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1.29b-2ubuntu0.4", "binary_name": "tar" }, { "binary_version": "1.29b-2ubuntu0.4", "binary_name": "tar-dbgsym" }, { "binary_version": "1.29b-2ubuntu0.4", "binary_name": "tar-scripts" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1.30+dfsg-7ubuntu0.20.04.3", "binary_name": "tar" }, { "binary_version": "1.30+dfsg-7ubuntu0.20.04.3", "binary_name": "tar-dbgsym" }, { "binary_version": "1.30+dfsg-7ubuntu0.20.04.3", "binary_name": "tar-scripts" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1.34+dfsg-1ubuntu0.1.22.04.1", "binary_name": "tar" }, { "binary_version": "1.34+dfsg-1ubuntu0.1.22.04.1", "binary_name": "tar-dbgsym" }, { "binary_version": "1.34+dfsg-1ubuntu0.1.22.04.1", "binary_name": "tar-scripts" } ] }