Security advisory

{
  "id": "32d4d2255ff042c008173cad8ff311a1c24dbcdaed9abdc3e821d0b8d94ff179",
  "url": "https://osv.dev/vulnerability/CVE-2020-5310",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-5310",
    "summary": "libImaging/TiffDecode.c in Pillow before 6.2.2 has a TIFF decoding integer overflow, related to realloc.",
    "evidence": "osv:CVE-2020-5310",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-5310",
      "aliases": [
        "BIT-pillow-2020-5310",
        "CVE-2020-5310",
        "GHSA-vcqg-3p29-xw73",
        "PYSEC-2020-81"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/python-pillow/pillow",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a45c8583ff90312a2fddc38567ed736cef4af563"
                },
                {
                  "fixed": "4e2def2539ec13e53a82e06c4b3daf00454100c4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "6.2.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4e2def2539ec13e53a82e06c4b3daf00454100c4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "6.2.1",
            "6.2.0",
            "6.1.0",
            "6.0.0",
            "5.4.0",
            "5.3.0",
            "5.2.0",
            "5.1.0",
            "5.0.0",
            "4.3.0",
            "4.2.0",
            "4.1.0",
            "4.0.0",
            "4.0.0a",
            "3.4.0",
            "3.3.0",
            "3.2.0",
            "3.1.0",
            "3.1.0-rc1",
            "2.9.0",
            "2.9.0.dev2",
            "2.9.0.dev1",
            "2.9.0.dev0",
            "2.8.1",
            "2.8.0",
            "2.7.0",
            "2.5.0",
            "2.3.0",
            "2.2.1",
            "2.2.0",
            "2.1.0",
            "2.0.0",
            "1.7.8",
            "1.7.7",
            "1.2",
            "1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-5310.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-5310-dd6ea137",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "11063566985366830361541805365964257484",
                    "10227853089858799829606132986670377937",
                    "317038433496737873798409669386881171228",
                    "117583418836728761439750076620579841509",
                    "42548093785476519379886330909429997892",
                    "180296352043842206907328859036068743446",
                    "232392863528886449003010581525191622890",
                    "170708454611785382970649880980374429778",
                    "194205829702377816602101179673064497694",
                    "233404740975746542367800271115279682632",
                    "263102630687762320497076038078445684335",
                    "195294903843144035227280250434198303035",
                    "31124841263578157110148021800467585987",
                    "310907908465319355122623942791978593816",
                    "339390408024927267804818065141722014459"
                  ]
                },
                "source": "https://github.com/python-pillow/pillow/commit/4e2def2539ec13e53a82e06c4b3daf00454100c4",
                "target": {
                  "file": "src/libImaging/TiffDecode.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-5310-ebcc8c54",
                "digest": {
                  "length": 4897,
                  "function_hash": "56824892614320334599794661287660083213"
                },
                "source": "https://github.com/python-pillow/pillow/commit/4e2def2539ec13e53a82e06c4b3daf00454100c4",
                "target": {
                  "file": "src/libImaging/TiffDecode.c",
                  "function": "ImagingLibTiffDecode"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T14:14:09Z"
          }
        }
      ],
      "modified": "2026-10-20T14:14:09.841676332Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MMU3WT2X64GS5WHDPKKC2WZA7UIIQ3A/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3DUMIBUYGJRAVJCTFUWBRLVQKOUTVX5P/",
        "https://pillow.readthedocs.io/en/stable/releasenotes/6.2.2.html",
        "https://usn.ubuntu.com/4272-1/",
        "https://github.com/python-pillow/Pillow/commit/4e2def2539ec13e53a82e06c4b3daf00454100c4"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*",
              "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
              "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
              "cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*"
            ],
            "vendor_product": "canonical:ubuntu_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "14.04"
                  },
                  {
                    "last_affected": "14.04"
                  },
                  {
                    "introduced": "16.04"
                  },
                  {
                    "last_affected": "16.04"
                  },
                  {
                    "introduced": "18.04"
                  },
                  {
                    "last_affected": "18.04"
                  },
                  {
                    "introduced": "19.10"
                  },
                  {
                    "last_affected": "19.10"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "30"
                  },
                  {
                    "last_affected": "30"
                  },
                  {
                    "introduced": "31"
                  },
                  {
                    "last_affected": "31"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-5310",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388754,
  "published_at": "2020-01-03T01:15:11.087+00:00"
}