Security advisory

{
  "id": "bb0251273086562fd2d65329db1842d9e2ef783f93056c93dc1796ad49d2cbd9",
  "url": "https://osv.dev/vulnerability/CVE-2020-21572",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-21572",
    "summary": "Buffer overflow vulnerability in function src_parser_trans_stage_1_2_3 trgil gilcc before commit 803969389ca9c06237075a7f8eeb1a19e6651759, allows attackers to cause a denial of service.",
    "evidence": "osv:CVE-2020-21572",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-21572",
      "aliases": [
        "CVE-2020-21572"
      ],
      "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/trgil/gilcc",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "803969389ca9c06237075a7f8eeb1a19e6651759"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "803969389ca9c06237075a7f8eeb1a19e6651759"
                      }
                    ],
                    "source": "DESCRIPTION"
                  },
                  {
                    "range": [
                      {
                        "fixed": "803969389ca9c06237075a7f8eeb1a19e6651759"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-21572.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-21572-2ffbd093",
                "digest": {
                  "length": 1705,
                  "function_hash": "285648628221269415290332320098136413892"
                },
                "source": "https://github.com/trgil/gilcc/commit/803969389ca9c06237075a7f8eeb1a19e6651759",
                "target": {
                  "file": "src/src_parser.c",
                  "function": "src_parser_trans_stage_1_2_3"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-21572-3561a588",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "114113861425250298010781779585360085529",
                    "11600629352745730642444199114467367462",
                    "117687232999212461781485386035118552668",
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                    "16254183038314963483327137802193104631"
                  ]
                },
                "source": "https://github.com/trgil/gilcc/commit/803969389ca9c06237075a7f8eeb1a19e6651759",
                "target": {
                  "file": "src/src_parser.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:52:24Z"
          }
        }
      ],
      "modified": "2026-10-20T13:52:24.178646992Z",
      "provider": "osv",
      "references": [
        "https://github.com/trgil/gilcc/issues/1",
        "https://github.com/trgil/gilcc/commit/803969389ca9c06237075a7f8eeb1a19e6651759"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:gilcc_project:gilcc:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "gilcc_project:gilcc",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "2019-12-22"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-21572",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388315,
  "published_at": "2021-11-02T18:15:08.037+00:00"
}