Security advisory

{
  "id": "bf73381289e71861b1121c078c474b2faa754adce793d8ee8776850b1865920a",
  "url": "https://osv.dev/vulnerability/CVE-2019-20176",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-20176",
    "summary": "In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.",
    "evidence": "osv:CVE-2019-20176",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-20176",
      "aliases": [
        "CVE-2019-20176"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/jedisct1/pure-ftpd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c21b45fc752039bceed8c8d4a1b8b9818a2fde20"
                },
                {
                  "last_affected": "c21b45fc752039bceed8c8d4a1b8b9818a2fde20"
                },
                {
                  "fixed": "aea56f4bcb9948d456f3fae4d044fd3fa2e19706"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:pureftpd:pure-ftpd:1.0.49:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.49"
                      },
                      {
                        "last_affected": "1.0.49"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "aea56f4bcb9948d456f3fae4d044fd3fa2e19706"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.49"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20176.json",
            "vanir_signatures": [
              {
                "id": "CVE-2019-20176-d43f31eb",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                    "260528986579099520244532034040127847635",
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                    "84928474189943885522301630519396609899"
                  ]
                },
                "source": "https://github.com/jedisct1/pure-ftpd/commit/aea56f4bcb9948d456f3fae4d044fd3fa2e19706",
                "target": {
                  "file": "src/ls.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:56:51Z"
          }
        }
      ],
      "modified": "2026-10-20T13:56:51.860380120Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AHZG5FPCRMCB6Z3L7FPICC6BZ5ZATFTO/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PICL3U2J4EPGBLOE555Y5RAZTQL3WBBV/",
        "https://github.com/jedisct1/pure-ftpd/commit/aea56f4bcb9948d456f3fae4d044fd3fa2e19706"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "30"
                  },
                  {
                    "last_affected": "30"
                  },
                  {
                    "introduced": "31"
                  },
                  {
                    "last_affected": "31"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-20176",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388433,
  "published_at": "2019-12-31T15:15:11.223+00:00"
}