Security advisory

{
  "id": "1876bdcc74fdc14da7dadadf84df46ccc020a88378b3cfc9c6dccd0414aaf7b7",
  "url": "https://osv.dev/vulnerability/CVE-2018-20763",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-20763",
    "summary": "In GPAC 0.7.1 and earlier, gf_text_get_utf8_line in media_tools/text_import.c in libgpac_static.a allows an out-of-bounds write because of missing szLineConv bounds checking.",
    "evidence": "osv:CVE-2018-20763",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-20763",
      "aliases": [
        "CVE-2018-20763"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gpac/gpac",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "440d475f133038824dab08292b2e592ecd0e10b4"
                },
                {
                  "fixed": "1c449a34fe0b50aaffb881bfb9d7c5ab0bb18cdd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gpac_project:gpac:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.7.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1c449a34fe0b50aaffb881bfb9d7c5ab0bb18cdd"
                      }
                    ],
                    "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-2018-20763.json",
            "vanir_signatures": [
              {
                "id": "CVE-2018-20763-0c29edbf",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                },
                "source": "https://github.com/gpac/gpac/commit/1c449a34fe0b50aaffb881bfb9d7c5ab0bb18cdd",
                "target": {
                  "file": "src/media_tools/text_import.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-20763-5a745480",
                "digest": {
                  "length": 30404,
                  "function_hash": "281025805913083021418832044241657820068"
                },
                "source": "https://github.com/gpac/gpac/commit/1c449a34fe0b50aaffb881bfb9d7c5ab0bb18cdd",
                "target": {
                  "file": "applications/mp4client/main.c",
                  "function": "mp4client_main"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-20763-6880280e",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                },
                "source": "https://github.com/gpac/gpac/commit/1c449a34fe0b50aaffb881bfb9d7c5ab0bb18cdd",
                "target": {
                  "file": "applications/mp4client/main.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-20763-ceb79c84",
                "digest": {
                  "length": 1668,
                  "function_hash": "234952272341952137755574601918750826876"
                },
                "source": "https://github.com/gpac/gpac/commit/1c449a34fe0b50aaffb881bfb9d7c5ab0bb18cdd",
                "target": {
                  "file": "src/media_tools/text_import.c",
                  "function": "gf_text_get_utf8_line"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:28:58Z"
          }
        }
      ],
      "modified": "2026-10-20T13:28:58.692642984Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2019/02/msg00040.html",
        "https://usn.ubuntu.com/3926-1/",
        "https://github.com/gpac/gpac/commit/1c449a34fe0b50aaffb881bfb9d7c5ab0bb18cdd",
        "https://github.com/gpac/gpac/issues/1188"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
              "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
              "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
            ],
            "vendor_product": "canonical:ubuntu_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "16.04"
                  },
                  {
                    "last_affected": "16.04"
                  },
                  {
                    "introduced": "18.04"
                  },
                  {
                    "last_affected": "18.04"
                  },
                  {
                    "introduced": "18.10"
                  },
                  {
                    "last_affected": "18.10"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0"
                  },
                  {
                    "last_affected": "8.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-20763",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387729,
  "published_at": "2019-02-06T23:29:00.417+00:00"
}