Security advisory

{
  "id": "77a95cf36da6c1d5dd69184794ff3b500f21acbf5052b281135e677c1b27eb6d",
  "url": "https://osv.dev/vulnerability/CVE-2019-20915",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-20915",
    "summary": "An issue was discovered in GNU LibreDWG through 0.9.3. Crafted input will lead to a heap-based buffer over-read in bit_write_TF in bits.c.",
    "evidence": "osv:CVE-2019-20915",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-20915",
      "aliases": [
        "CVE-2019-20915"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libredwg/libredwg",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "ece161fd5e396fdb4094bdba027c5ea8476f73af"
                },
                {
                  "fixed": "95cc9300430d35feb05b06a9badf678419463dbe"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gnu:libredwg:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.9.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "95cc9300430d35feb05b06a9badf678419463dbe"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.9.3",
            "0.9.2",
            "0.9.1",
            "0.9",
            "0.8",
            "0.7",
            "0.6.2",
            "0.6.1",
            "0.6",
            "0.5",
            "0.4.938",
            "0.4.924",
            "0.4.900",
            "0.4-dev",
            "0.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20915.json",
            "vanir_signatures": [
              {
                "id": "CVE-2019-20915-210ac7c4",
                "digest": {
                  "length": 523,
                  "function_hash": "96338434088265487358644619236390278650"
                },
                "source": "https://github.com/libredwg/libredwg/commit/95cc9300430d35feb05b06a9badf678419463dbe",
                "target": {
                  "file": "src/bits.c",
                  "function": "bit_write_UMC"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2019-20915-3814b3b0",
                "digest": {
                  "length": 615,
                  "function_hash": "18052524477363704424498150970287342147"
                },
                "source": "https://github.com/libredwg/libredwg/commit/95cc9300430d35feb05b06a9badf678419463dbe",
                "target": {
                  "file": "src/bits.c",
                  "function": "bit_write_MC"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
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                "id": "CVE-2019-20915-55eb21a0",
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                "source": "https://github.com/libredwg/libredwg/commit/95cc9300430d35feb05b06a9badf678419463dbe",
                "target": {
                  "file": "src/bits.c"
                },
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            ],
            "vanir_signatures_modified": "2026-10-20T13:43:02Z"
          }
        }
      ],
      "modified": "2026-10-20T13:43:02.581696443Z",
      "provider": "osv",
      "references": [
        "https://github.com/LibreDWG/libredwg/commit/95cc9300430d35feb05b06a9badf678419463dbe",
        "https://github.com/LibreDWG/libredwg/issues/178"
      ],
      "provider_metadata": {}
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    "related_cves": [
      {
        "value": "CVE-2019-20915",
        "evidence": "/id"
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    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387988,
  "published_at": "2020-07-16T18:15:13.86+00:00"
}