ubuntu-cve-2021-37695
Vulnerability from osv_ubuntu
Published
2021-08-13 00:15
Modified
2026-05-20 14:53
Summary
Details

ckeditor is an open source WYSIWYG HTML editor with rich content support. A potential vulnerability has been discovered in CKEditor 4 Fake Objects package. The vulnerability allowed to inject malformed Fake Objects HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version < 4.16.2. The problem has been recognized and patched. The fix will be available in version 4.16.2.

Severity
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ckeditor",
            "binary_version": "4.5.7+dfsg-2ubuntu0.16.04.1~esm1"
          }
        ]
      },
      "package": {
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        "name": "ckeditor",
        "purl": "pkg:deb/ubuntu/ckeditor@4.5.7+dfsg-2ubuntu0.16.04.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.7+dfsg-2ubuntu0.16.04.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.4+dfsg1-3",
        "4.5.6+dfsg-1",
        "4.5.7+dfsg-1",
        "4.5.7+dfsg-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "ldap-account-manager",
            "binary_version": "5.2-1ubuntu1"
          },
          {
            "binary_name": "ldap-account-manager-lamdaemon",
            "binary_version": "5.2-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ldap-account-manager",
        "purl": "pkg:deb/ubuntu/ldap-account-manager@5.2-1ubuntu1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.9-1",
        "5.1-1",
        "5.2-1",
        "5.2-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
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          {
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            "binary_version": "4.2.12-5"
          },
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          },
          {
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          },
          {
            "binary_name": "rt4-doc-html",
            "binary_version": "4.2.12-5"
          },
          {
            "binary_name": "rt4-fcgi",
            "binary_version": "4.2.12-5"
          },
          {
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      "package": {
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      ],
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        "4.2.12-3",
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    },
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      "ecosystem_specific": {
        "availability": "No subscription required",
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      },
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    {
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      },
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          },
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          },
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            "binary_name": "rt4-clients",
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          },
          {
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          },
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          },
          {
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          },
          {
            "binary_name": "rt4-doc-html",
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          },
          {
            "binary_name": "rt4-fcgi",
            "binary_version": "4.4.2-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "rt4-standalone",
            "binary_version": "4.4.2-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "request-tracker4",
        "purl": "pkg:deb/ubuntu/request-tracker4@4.4.2-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
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      ],
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        "4.4.2-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ckeditor",
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          }
        ]
      },
      "package": {
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      },
      "ranges": [
        {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
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    {
      "ecosystem_specific": {
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      },
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      },
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          ],
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      ],
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    },
    {
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      },
      "package": {
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    },
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          },
          {
            "binary_name": "ldap-account-manager-lamdaemon",
            "binary_version": "9.0-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "ldap-account-manager",
        "purl": "pkg:deb/ubuntu/ldap-account-manager@9.0-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.0-1",
        "9.0-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "request-tracker4",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-apache2",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-clients",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-db-mysql",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-db-postgresql",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-db-sqlite",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-doc-html",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-fcgi",
            "binary_version": "4.4.7+dfsg-4syncable1"
          },
          {
            "binary_name": "rt4-standalone",
            "binary_version": "4.4.7+dfsg-4syncable1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "request-tracker4",
        "purl": "pkg:deb/ubuntu/request-tracker4@4.4.7+dfsg-4syncable1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.7+dfsg-4syncable1"
      ]
    }
  ],
  "aliases": [],
  "details": "ckeditor is an open source WYSIWYG HTML editor with rich content support. A potential vulnerability has been discovered in CKEditor 4 [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) package. The vulnerability allowed to inject malformed Fake Objects HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version \u003c 4.16.2. The problem has been recognized and patched. The fix will be available in version 4.16.2.",
  "id": "UBUNTU-CVE-2021-37695",
  "modified": "2026-05-20T14:53:27Z",
  "published": "2021-08-13T00:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-37695"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-m94c-37g6-cjhc"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ckeditor/ckeditor4/commit/de3c001540715f9c3801aaa38a1917de46cfcf58"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5340-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5340-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-37695"
    }
  ],
  "related": [
    "USN-5340-1",
    "USN-5340-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-37695"
  ]
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.