Security advisory

{
  "id": "1fb3511ef1acf2f839c716778eac26864fb7252ac67f9b6fc867f72117e41664",
  "url": "https://osv.dev/vulnerability/CVE-2020-19609",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-19609",
    "summary": "Artifex MuPDF before 1.18.0 has a heap based buffer over-write in tiff_expand_colormap() function when parsing TIFF files allowing attackers to cause a denial of service.",
    "evidence": "osv:CVE-2020-19609",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-19609",
      "aliases": [
        "CVE-2020-19609"
      ],
      "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/artifexsoftware/mupdf",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "ea5799e01730c4aa15cddd1023700e4f7b78cc27"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.18.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.18.0-rc1",
            "1.17.0-rc1",
            "1.16.1",
            "1.16.1-epub-prerelease",
            "1.16.0-rc2",
            "1.16.0",
            "1.16.0-rc1",
            "1.15.0-rc1",
            "1.15.0",
            "1.14.0",
            "1.14.0-rc1",
            "1.13.0-rc1",
            "1.13.0",
            "1.12.0",
            "1.11.1",
            "1.11",
            "1.11-rc1",
            "1.10",
            "1.10-rc2",
            "1.10-rc1",
            "1.9a",
            "1.9",
            "1.9-rc2",
            "1.9-rc1",
            "1.8",
            "1.7a",
            "1.7",
            "1.7-rc1",
            "1.6-appstore",
            "1.6-ios-rc2",
            "1.6-ios-rc1",
            "android-release-60",
            "1.6",
            "1.5-ios-rc8",
            "1.5-ios-appstore",
            "1.5-ios-rc7",
            "1.5-ios-rc6",
            "1.5-ios",
            "1.5",
            "1.4-ios",
            "1.4",
            "1.3rc1",
            "1.2",
            "1.1-forms-tech-preview",
            "1.0",
            "1.0rc1",
            "0.9",
            "0.8",
            "0.7",
            "0.6",
            "0.5",
            "0.4",
            "0.3",
            "0.2",
            "0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-19609.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-19609-91bd22d4",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
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                  ]
                },
                "source": "https://github.com/artifexsoftware/mupdf/commit/ea5799e01730c4aa15cddd1023700e4f7b78cc27",
                "target": {
                  "file": "source/tools/murun.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-19609-e21e7b3e",
                "digest": {
                  "length": 23845,
                  "function_hash": "251675964121664698738070537556026348583"
                },
                "source": "https://github.com/artifexsoftware/mupdf/commit/ea5799e01730c4aa15cddd1023700e4f7b78cc27",
                "target": {
                  "file": "source/tools/murun.c",
                  "function": "murun_main"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-24T14:22:40Z"
          }
        }
      ],
      "modified": "2026-10-24T14:22:40.139599018Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2021/09/msg00013.html",
        "https://bugs.ghostscript.com/show_bug.cgi?id=703076",
        "https://bugs.ghostscript.com/show_bug.cgi?id=701176"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-19609",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 443678,
  "published_at": "2021-07-21T15:15:12.57+00:00"
}