Security advisory

{
  "id": "6d1e471758adfe189cf6739996aa53be640568a4a5d5379dadc8e4cfbffff8bb",
  "url": "https://osv.dev/vulnerability/CVE-2021-33366",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-33366",
    "summary": "Memory leak in the gf_isom_oinf_read_entry function in MP4Box in GPAC 1.0.1 allows attackers to read memory via a crafted file.",
    "evidence": "osv:CVE-2021-33366",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-33366",
      "aliases": [
        "CVE-2021-33366"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gpac/gpac",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d8538e8ae946b32d99c6b2c57cbb327146e9cd9d"
                },
                {
                  "last_affected": "d8538e8ae946b32d99c6b2c57cbb327146e9cd9d"
                },
                {
                  "fixed": "0a85029d694f992f3631e2f249e4999daee15cbf"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gpac:gpac:1.0.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.1"
                      },
                      {
                        "last_affected": "1.0.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "0a85029d694f992f3631e2f249e4999daee15cbf"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.1",
            "v1.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33366.json",
            "vanir_signatures": [
              {
                "id": "CVE-2021-33366-055ee822",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "300921247869268374670114649845646114000",
                    "268115012844309457581256500449888999880",
                    "112605582290686948143665129381495412118",
                    "167233635158787946113545385271266292907",
                    "339594173779950548247693231596897312929"
                  ]
                },
                "source": "https://github.com/gpac/gpac/commit/0a85029d694f992f3631e2f249e4999daee15cbf",
                "target": {
                  "file": "src/isomedia/avc_ext.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2021-33366-68dbf00a",
                "digest": {
                  "length": 2999,
                  "function_hash": "221996246729804369847592071767377089397"
                },
                "source": "https://github.com/gpac/gpac/commit/0a85029d694f992f3631e2f249e4999daee15cbf",
                "target": {
                  "file": "src/isomedia/avc_ext.c",
                  "function": "gf_isom_oinf_read_entry"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T14:05:12Z"
          }
        }
      ],
      "modified": "2026-10-20T14:05:12.754965539Z",
      "provider": "osv",
      "references": [
        "https://www.debian.org/security/2023/dsa-5411",
        "https://github.com/gpac/gpac/commit/0a85029d694f992f3631e2f249e4999daee15cbf",
        "https://github.com/gpac/gpac/issues/1785"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-33366",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388544,
  "published_at": "2021-09-13T19:15:14.587+00:00"
}