Security advisory

{
  "id": "410d3fb42643c143621db95d11da26f399310d5c197b1b21ff11c8f1def98506",
  "url": "https://osv.dev/vulnerability/CVE-2020-28840",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-28840",
    "summary": "Buffer Overflow vulnerability in jpgfile.c in Matthias-Wandel jhead version 3.04, allows local attackers to execute arbitrary code and cause a denial of service (DoS).",
    "evidence": "osv:CVE-2020-28840",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-28840",
      "aliases": [
        "CVE-2020-28840",
        "GHSA-xh27-xwgj-gqw2"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/matthias-wandel/jhead",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4827ed31c226dc5ed93603bd649e0e387a1778da"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "4827ed31c226dc5ed93603bd649e0e387a1778da"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28840.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-28840-2886e8f4",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "22708694695867634931681004538540366643",
                    "11751138034829950508830305760280444044",
                    "165457676957557909118827148440781991284",
                    "34090575304609549547297553678404706818"
                  ]
                },
                "source": "https://github.com/matthias-wandel/jhead/commit/4827ed31c226dc5ed93603bd649e0e387a1778da",
                "target": {
                  "file": "jpgfile.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-28840-31077d1a",
                "digest": {
                  "length": 576,
                  "function_hash": "67584776302249895972607559024694253211"
                },
                "source": "https://github.com/matthias-wandel/jhead/commit/4827ed31c226dc5ed93603bd649e0e387a1778da",
                "target": {
                  "file": "jpgfile.c",
                  "function": "process_COM"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:59:14Z"
          }
        }
      ],
      "modified": "2026-10-20T13:59:14.336032187Z",
      "provider": "osv",
      "references": [
        "https://bugs.launchpad.net/ubuntu/+source/jhead/+bug/1900820",
        "https://github.com/Matthias-Wandel/jhead/commit/4827ed31c226dc5ed93603bd649e0e387a1778da",
        "https://github.com/Matthias-Wandel/jhead/issues/8",
        "https://github.com/F-ZhaoYang/jhead/security/advisories/GHSA-xh27-xwgj-gqw2"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:matthiaswandel:jhead:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "matthiaswandel:jhead",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "3.04"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-28840",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388472,
  "published_at": "2023-08-11T14:15:11.103+00:00"
}