GHSA-HGQX-R2HP-JR38

Vulnerability from github – Published: 2023-10-19 16:42 – Updated: 2023-10-20 16:17
VLAI?
Summary
TinyMCE XSS vulnerability in notificationManager.open API
Details

Impact

A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s Notification Manager API. The vulnerability exploits TinyMCE's unfiltered notification system, which is used in error handling. The conditions for this exploit requires carefully crafted malicious content to have been inserted into the editor and a notification to have been triggered.

When a notification was opened, the HTML within the text argument was displayed unfiltered in the notification. The vulnerability allowed arbitrary JavaScript execution when an notification presented in the TinyMCE UI for the current user. This issue could also be exploited by any integration which uses a TinyMCE notification to display unfiltered HTML content.

Patches

This vulnerability has been patched in TinyMCE 5.10.8 and TinyMCE 6.7.1 by ensuring that the HTML displayed in the notification is sanitized, preventing the exploit.

Fix

To avoid this vulnerability:

  • Upgrade to TinyMCE 5.10.8 or higher for TinyMCE 5.x.
  • Upgrade to TinyMCE 6.7.1 or higher for TinyMCE 6.x.

References

For more information

If you have any questions or comments about this advisory: * Email us at infosec@tiny.cloud * Open an issue in the TinyMCE repo

Severity ?
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "tinymce"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.7.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "TinyMCE"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.7.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "tinymce/tinymce"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.7.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "tinymce"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.10.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "TinyMCE"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.10.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "tinymce/tinymce"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.10.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-45819"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-10-19T16:42:57Z",
    "nvd_published_at": "2023-10-19T22:15:11Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nA [cross-site scripting (XSS)](https://owasp.org/www-community/attacks/xss/) vulnerability was discovered in TinyMCE\u2019s Notification Manager API. The vulnerability exploits TinyMCE\u0027s unfiltered notification system, which is used in error handling.  The conditions for this exploit requires carefully crafted malicious content to have been inserted into the editor and a notification to have been triggered.  \n\nWhen a notification was opened, the HTML within the text argument was displayed unfiltered in the notification. The vulnerability allowed arbitrary JavaScript execution when an notification presented in the TinyMCE UI for the current user.  This issue could also be exploited by any integration which uses a TinyMCE notification to display unfiltered HTML content.\n\n### Patches\nThis vulnerability has been patched in TinyMCE 5.10.8 and TinyMCE 6.7.1 by ensuring that the HTML displayed in the notification is sanitized, preventing the exploit.\n\n### Fix\nTo avoid this vulnerability:\n\n* Upgrade to TinyMCE 5.10.8 or higher for TinyMCE 5.x.\n* Upgrade to TinyMCE 6.7.1 or higher for TinyMCE 6.x.\n\n### References\n* \u003chttps://tiny.cloud/docs/release-notes/release-notes5108/#securityfixes\u003e\n* \u003chttps://tiny.cloud/docs/tinymce/6/6.7.1-release-notes/#security-fixes\u003e\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at \u003cinfosec@tiny.cloud\u003e\n* Open an issue in the [TinyMCE repo](https://github.com/tinymce/tinymce/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc)\n",
  "id": "GHSA-hgqx-r2hp-jr38",
  "modified": "2023-10-20T16:17:07Z",
  "published": "2023-10-19T16:42:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tinymce/tinymce/security/advisories/GHSA-hgqx-r2hp-jr38"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45819"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tinymce/tinymce"
    },
    {
      "type": "WEB",
      "url": "https://tiny.cloud/docs/release-notes/release-notes5108/#securityfixes"
    },
    {
      "type": "WEB",
      "url": "https://tiny.cloud/docs/tinymce/6/6.7.1-release-notes/#security-fixes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "TinyMCE XSS vulnerability in notificationManager.open API"
}


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  • 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.