Security advisory

{
  "id": "1ed154022938be97e69aabe4432d358c8de10cd16880201f85824214e082783d",
  "url": "https://osv.dev/vulnerability/CVE-2019-20421",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-20421",
    "summary": "In Jp2Image::readMetadata() in jp2image.cpp in Exiv2 0.27.2, an input file can result in an infinite loop and hang, with high CPU consumption. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted file.",
    "evidence": "osv:CVE-2019-20421",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-20421",
      "aliases": [
        "CVE-2019-20421"
      ],
      "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/exiv2/exiv2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "70f9405fafbe19c7bab94b36a1267c4332dc8a8a"
                },
                {
                  "last_affected": "70f9405fafbe19c7bab94b36a1267c4332dc8a8a"
                },
                {
                  "fixed": "a82098f4f90cd86297131b5663c3dec6a34470e8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:exiv2:exiv2:0.27.2:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.27.2"
                      },
                      {
                        "last_affected": "0.27.2"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a82098f4f90cd86297131b5663c3dec6a34470e8"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.27.2",
            "v0.27.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20421.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:39.509061909Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2021/08/msg00028.html",
        "https://usn.ubuntu.com/4270-1/",
        "https://www.debian.org/security/2021/dsa-4958",
        "https://github.com/Exiv2/exiv2/commit/a82098f4f90cd86297131b5663c3dec6a34470e8",
        "https://github.com/Exiv2/exiv2/issues/1011"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
              "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": "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:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  },
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-20421",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383715,
  "published_at": "2020-01-27T05:15:10.453+00:00"
}