{"id":"UBUNTU-CVE-2019-9923","details":"pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed extended headers.","modified":"2026-02-04T04:03:56.898537Z","published":"2019-03-22T08:29:00Z","related":["USN-4692-1"],"upstream":["CVE-2019-9923"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-9923"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4692-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-9923"}],"affected":[{"package":{"name":"tar","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/tar@1.27.1-1ubuntu0.1+esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.27.1-1ubuntu0.1+esm1"}]}],"versions":["1.26+dfsg-8","1.27-3","1.27-4","1.27.1-1","1.27.1-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"tar","binary_version":"1.27.1-1ubuntu0.1+esm1"},{"binary_name":"tar-scripts","binary_version":"1.27.1-1ubuntu0.1+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-9923.json"}},{"package":{"name":"tar","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/tar@1.28-2.1ubuntu0.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28-2.1ubuntu0.2"}]}],"versions":["1.27.1-2","1.28-2ubuntu1","1.28-2.1","1.28-2.1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"tar","binary_version":"1.28-2.1ubuntu0.2"},{"binary_name":"tar-scripts","binary_version":"1.28-2.1ubuntu0.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-9923.json"}},{"package":{"name":"tar","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/tar@1.29b-2ubuntu0.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.29b-2ubuntu0.2"}]}],"versions":["1.29b-2","1.29b-2ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"tar","binary_version":"1.29b-2ubuntu0.2"},{"binary_name":"tar-scripts","binary_version":"1.29b-2ubuntu0.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-9923.json"}},{"package":{"name":"tar","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/tar@1.30+dfsg-7ubuntu0.20.04.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.30+dfsg-7ubuntu0.20.04.1"}]}],"versions":["1.30+dfsg-6","1.30+dfsg-7"],"ecosystem_specific":{"binaries":[{"binary_name":"tar","binary_version":"1.30+dfsg-7ubuntu0.20.04.1"},{"binary_name":"tar-scripts","binary_version":"1.30+dfsg-7ubuntu0.20.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-9923.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}