GHSA-7889-RM5J-HPGG

Vulnerability from github – Published: 2021-08-23 19:40 – Updated: 2022-02-08 21:01
VLAI
Summary
Clipboard feature vulnerability allowing to inject arbitrary HTML into the editor using paste functionality
Details

Affected packages

The vulnerability has been discovered in clipboard plugin. All plugins with clipboard plugin dependency are affected:

Impact

A potential vulnerability has been discovered in CKEditor 4 Clipboard package. The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. It affects all users using the CKEditor 4 plugins listed above at version >= 4.5.2.

Patches

The problem has been recognized and patched. The fix will be available in version 4.16.2.

For more information

Email us at security@cksource.com if you have any questions or comments about this advisory.

Acknowledgements

The CKEditor 4 team would like to thank Anton Subbotin (skavans) for recognizing and reporting this vulnerability.

Severity
4.6 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "ckeditor4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.5.2"
            },
            {
              "fixed": "4.16.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-32809"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-23T16:49:10Z",
    "nvd_published_at": "2021-08-12T17:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Affected packages\nThe vulnerability has been discovered in [clipboard](https://ckeditor.com/cke4/addon/clipboard) plugin. All plugins with [clipboard](https://ckeditor.com/cke4/addon/clipboard) plugin dependency are affected:\n\n* [clipboard](https://ckeditor.com/cke4/addon/clipboard)\n* [pastetext](https://ckeditor.com/cke4/addon/pastetext)\n* [pastetools](https://ckeditor.com/cke4/addon/pastetools)\n* [widget](https://ckeditor.com/cke4/addon/widget)\n* [uploadwidget](https://ckeditor.com/cke4/addon/uploadwidget)\n* [autolink](https://ckeditor.com/cke4/addon/autolink)\n* [tableselection](https://ckeditor.com/cke4/addon/tableselection)\n\n### Impact\nA potential vulnerability has been discovered in CKEditor 4 [Clipboard](https://ckeditor.com/cke4/addon/clipboard) package. The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. It affects all users using the CKEditor 4 plugins listed above at version \u003e= 4.5.2.\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version 4.16.2.\n\n### For more information\nEmail us at security@cksource.com if you have any questions or comments about this advisory.\n\n### Acknowledgements\nThe CKEditor 4 team would like to thank Anton Subbotin ([skavans](https://github.com/skavans)) for recognizing and reporting this vulnerability.\n",
  "id": "GHSA-7889-rm5j-hpgg",
  "modified": "2022-02-08T21:01:48Z",
  "published": "2021-08-23T19:40:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7889-rm5j-hpgg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32809"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ckeditor/ckeditor4"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UVOYN2WKDPLKCNILIGEZM236ABQASLGW"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WAGNWHFIQAVCP537KFFS2A2GDG66J7XD"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Clipboard feature vulnerability allowing to inject arbitrary HTML into the editor using paste functionality"
}



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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

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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.



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