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imagemagick — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2021-20246

A flaw was found in ImageMagick in MagickCore/resample.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of math division by zero. The highest threat from this vulnerability is to system availability.

Products
imagemagick
Affected versions
Not specified
Fixed versions
8:6.9.11.60+dfsg-1.5
CVEs
CVE-2021-20246
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 00:57 UTC · Revision 1

Source evidence

DEBIAN-CVE-2021-20246

core-osv · Original source

Published 9 Mar 2021, 19:15 UTC

A flaw was found in ImageMagick in MagickCore/resample.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of math division by zero. The highest threat from this vulnerability is to system availability.

osv:DEBIAN-CVE-2021-20246

imagemagick

Fixed versions: 8:6.9.11.60+dfsg-1.5

imagemagick

Fixed versions: 8:6.9.11.60+dfsg-1.5

imagemagick

Fixed versions: 8:6.9.11.60+dfsg-1.5

Complete source record
{
  "id": "71e672fa8324e7cafa2c7fd30e8f938b168f21caf575aa16ccbe1686e3dfa7ef",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-20246",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2021-20246",
    "summary": "A flaw was found in ImageMagick in MagickCore/resample.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of math division by zero. The highest threat from this vulnerability is to system availability.",
    "evidence": "osv:DEBIAN-CVE-2021-20246",
    "products": [
      {
        "name": {
          "value": "imagemagick",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "8:6.9.11.60+dfsg-1.5",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "imagemagick",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "8:6.9.11.60+dfsg-1.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "imagemagick",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "8:6.9.11.60+dfsg-1.5",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2021-20246",
      "aliases": [
        "DEBIAN-CVE-2021-20246"
      ],
      "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": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8:6.9.11.60+dfsg-1.5"
                }
              ]
            }
          ],
          "package": {
            "name": "imagemagick",
            "purl": "pkg:deb/debian/imagemagick?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20246.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8:6.9.11.60+dfsg-1.5"
                }
              ]
            }
          ],
          "package": {
            "name": "imagemagick",
            "purl": "pkg:deb/debian/imagemagick?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20246.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8:6.9.11.60+dfsg-1.5"
                }
              ]
            }
          ],
          "package": {
            "name": "imagemagick",
            "purl": "pkg:deb/debian/imagemagick?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20246.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-23T18:03:58.847005104Z",
      "provider": "osv",
      "upstream": [
        "CVE-2021-20246"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2021-20246"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2021-20246",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 422818,
  "published_at": "2021-03-09T19:15:12.58+00:00"
}