Vulnerability-Lookup

CVE-2019-20421 (GCVE-0-2019-20421)

Vulnerability from cvelistv5 – Published: 2020-01-27 04:22 – Updated: 2024-08-05 02:39

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.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

Assigner

mitre

References

5 references

URL	Tags
https://github.com/Exiv2/exiv2/issues/1011	x_refsource_MISC
https://github.com/Exiv2/exiv2/commit/a82098f4f90…	x_refsource_MISC
https://usn.ubuntu.com/4270-1/	vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2021/dsa-4958	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Show details on NVD website

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    "redhat_vex": {
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      "current_release_date": "2026-06-26T23:44:40+00:00",
      "cve": "CVE-2019-20421",
      "id": "CVE-2019-20421",
      "initial_release_date": "2019-09-30T00:00:00+00:00",
      "product_status:fixed": "97",
      "product_status:known_not_affected": "8",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "exiv2: infinite loop and hang in Jp2Image::readMetadata() in jp2image.cpp could lead to DoS",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-20421.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-10-07T09:18:28Z",
      "cve": "CVE-2019-20421",
      "id": "CVE-2019-20421",
      "initial_release_date": "2023-02-15T04:05:21Z",
      "product_status:known_not_affected": "8",
      "product_status:recommended": "20",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-20421",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-20421.json",
      "version": "10"
    }
  }
}

ubuntu-cve-2019-20421

Vulnerability from osv_ubuntu

Published

2020-01-27 05:15

Modified

2026-04-22 07:39

Summary

Details

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2019-20421	REPORT
	https://github.com/Exiv2/exiv2/commit/a82098f4f90…	REPORT
	https://github.com/Exiv2/exiv2/issues/1011	REPORT
	https://ubuntu.com/security/notices/USN-4270-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2019-20421	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "exiv2",
            "binary_version": "0.25-2.1ubuntu16.04.6"
          },
          {
            "binary_name": "libexiv2-14",
            "binary_version": "0.25-2.1ubuntu16.04.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "exiv2",
        "purl": "pkg:deb/ubuntu/exiv2@0.25-2.1ubuntu16.04.6?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.25-2.1ubuntu16.04.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.25-1ubuntu1",
        "0.25-2.1",
        "0.25-2.1ubuntu16.04.1",
        "0.25-2.1ubuntu16.04.2",
        "0.25-2.1ubuntu16.04.3",
        "0.25-2.1ubuntu16.04.4",
        "0.25-2.1ubuntu16.04.5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "exiv2",
            "binary_version": "0.25-3.1ubuntu0.18.04.5"
          },
          {
            "binary_name": "libexiv2-14",
            "binary_version": "0.25-3.1ubuntu0.18.04.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "exiv2",
        "purl": "pkg:deb/ubuntu/exiv2@0.25-3.1ubuntu0.18.04.5?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.25-3.1ubuntu0.18.04.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.25-3.1",
        "0.25-3.1ubuntu0.18.04.1",
        "0.25-3.1ubuntu0.18.04.2",
        "0.25-3.1ubuntu0.18.04.3",
        "0.25-3.1ubuntu0.18.04.4"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2019-20421",
  "modified": "2026-04-22T07:39:14Z",
  "published": "2020-01-27T05:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-20421"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Exiv2/exiv2/commit/a82098f4f90cd86297131b5663c3dec6a34470e8"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Exiv2/exiv2/issues/1011"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4270-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-20421"
    }
  ],
  "related": [
    "USN-4270-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-20421"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2019-20421 (GCVE-0-2019-20421)

ubuntu-cve-2019-20421

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature