{"id":"CVE-2019-9923","title":"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.","summary":"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.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"gnu","product":"tar","affected":["tar < 1.32","leap = 15.0"],"patched":["tar 1.32"],"published":"2019-03-22","updated":"2026-10-14","sourceUpdated":"2026-10-14T07:16:58.637","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2019-9923","references":[{"url":"http://git.savannah.gnu.org/cgit/tar.git/commit/?id=cb07844454d8cc9fb21f53ace75975f91185a120","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html","label":"cve@mitre.org"},{"url":"http://savannah.gnu.org/bugs/?55369","label":"cve@mitre.org"},{"url":"https://bugs.launchpad.net/ubuntu/+source/tar/+bug/1810241","label":"cve@mitre.org"},{"url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E","label":"cve@mitre.org"},{"url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E","label":"cve@mitre.org"},{"url":"http://git.savannah.gnu.org/cgit/tar.git/commit/?id=cb07844454d8cc9fb21f53ace75975f91185a120","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://savannah.gnu.org/bugs/?55369","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.launchpad.net/ubuntu/+source/tar/+bug/1810241","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.03152,"epssPercentile":0.87883,"ingestedAt":"2026-10-14T07:21:04.809Z","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2025-08-06T20:59:20.396938Z"},"slug":"CVE-2019-9923","body":"## Overview\n\npax_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.\n\n## Affected\n\n- `tar < 1.32`\n- `leap = 15.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `tar 1.32`","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":41.3,"likelihood":0.6,"exploitation":12,"ransomware":0},"changes":[{"seq":221237,"id":"CVE-2019-9923","ts":1792030862516,"field":"exploit_available","old":"false","new":"true"}]}