Security advisory

{
  "id": "a3283466e81e0983db38d10b77eb964ee32748ac51a9d4719700cf8ff7e60aa2",
  "url": "https://osv.dev/vulnerability/CVE-2019-9923",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-9923",
    "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.",
    "evidence": "osv:CVE-2019-9923",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-9923",
      "aliases": [
        "CVE-2019-9923"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "http://http.git.savannah.gnu.org/git/tar.git/",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "44cfdfb8b61e2b84b37a61c18a83ef0916e9a0d2"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.32"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "release_1_31",
            "release_1_30",
            "release_1_29",
            "release_1_28",
            "release_1_27_1",
            "release_1_27",
            "release_1_26",
            "release_1_24",
            "release_1_23",
            "release_1_22",
            "release_1_21",
            "release_1_20",
            "release_1_19",
            "release_1_18",
            "release_1_17",
            "release_1_16_1",
            "release_1_16",
            "alpha_1_15_91",
            "alpha_1_15_90_incremental_1",
            "alpha_1_15_90",
            "release_1_15_1",
            "release_1_15",
            "release_1_14",
            "alpha_1_13_93",
            "old"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-9923.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://cgit.git.savannah.gnu.org/cgit/tar.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "cb07844454d8cc9fb21f53ace75975f91185a120"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "cb07844454d8cc9fb21f53ace75975f91185a120"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-9923.json"
          }
        }
      ],
      "modified": "2026-10-23T02:30:25.412843344Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
        "https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E",
        "https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E",
        "https://bugs.launchpad.net/ubuntu/+source/tar/+bug/1810241"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "opensuse:leap",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "15.0"
                  },
                  {
                    "last_affected": "15.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-9923",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 411747,
  "published_at": "2019-03-22T08:29:00.247+00:00"
}