Security advisory

{
  "id": "8cd5961c1343ac2f16c0871903f3e13ce71b4dc7d06e5242677a101da6a0adbe",
  "url": "https://osv.dev/vulnerability/CVE-2020-23930",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-23930",
    "summary": "An issue was discovered in gpac through 20200801. A NULL pointer dereference exists in the function nhmldump_send_header located in write_nhml.c. It allows an attacker to cause Denial of Service.",
    "evidence": "osv:CVE-2020-23930",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-23930",
      "aliases": [
        "CVE-2020-23930"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gpac/gpac",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d8538e8ae946b32d99c6b2c57cbb327146e9cd9d"
                },
                {
                  "fixed": "9eeac00b38348c664dfeae2525bba0cf1bc32349"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gpac:gpac:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.0.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "9eeac00b38348c664dfeae2525bba0cf1bc32349"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.7.1",
            "v0.7.0",
            "v0.6.0",
            "v0.5.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-23930.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-23930-11407349",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                    "45585237414436127171925576937545840635",
                    "278661613006658029934394344360736263072"
                  ]
                },
                "source": "https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349",
                "target": {
                  "file": "src/filters/write_nhml.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-23930-372daa3a",
                "digest": {
                  "length": 5664,
                  "function_hash": "308095444081921113363681641521013641954"
                },
                "source": "https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349",
                "target": {
                  "file": "src/filters/write_nhml.c",
                  "function": "nhmldump_send_header"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-23930-757087f4",
                "digest": {
                  "length": 59602,
                  "function_hash": "217265730055898313492699544444049551658"
                },
                "source": "https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349",
                "target": {
                  "file": "applications/mp4box/main.c",
                  "function": "mp4boxMain"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-23930-f5d9e11c",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                },
                "source": "https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349",
                "target": {
                  "file": "applications/mp4box/main.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:56:03Z"
          }
        }
      ],
      "modified": "2026-10-20T13:56:03.876216390Z",
      "provider": "osv",
      "references": [
        "https://github.com/gpac/gpac/commit/9eeac00b38348c664dfeae2525bba0cf1bc32349",
        "https://github.com/gpac/gpac/issues/1565"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-23930",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388403,
  "published_at": "2021-04-21T18:15:08.417+00:00"
}