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XWiki Platform vulnerable to persistent Cross-site Scripting through CKEditor Configuration pages

Critical severity GitHub Reviewed Published Jun 30, 2023 in xwiki/xwiki-platform • Updated Nov 5, 2023

Package

maven org.xwiki.contrib:application-ckeditor-ui (Maven)

Affected versions

>= 1.9, < 1.64.9

Patched versions

1.64.9
maven org.xwiki.platform:xwiki-platform-ckeditor-ui (Maven)
>= 14.6-rc-1, < 14.10.6
>= 15.0-rc-1, < 15.1
14.10.6
15.1

Description

Effect

Any user with edit rights can edit all pages in the `CKEditor' space. This makes it possible to perform a variety of harmful actions, such as

  • removing technical documents, leading to loss of service
  • Editing the javascript configuration of CKEditor, leading to persistent XSS

Patches

This issue has been patched in XWiki 14.10.6 and XWiki 15.1.
This issue has been patched on the CKEditor Integration extension 1.64.9 for XWiki version older than 14.6RC1.

Workarounds

The issue can be fixed manually by restricting the edit and delete rights to a trusted user or group (e.g. the XWiki.XWikiAdminGroup group), implicitly disabling those rights for all other users.
See xwiki/xwiki-platform@9d9d861

References

For more information

If you have any questions or comments about this advisory:

References

@manuelleduc manuelleduc published to xwiki/xwiki-platform Jun 30, 2023
Published by the National Vulnerability Database Jun 30, 2023
Published to the GitHub Advisory Database Jun 30, 2023
Reviewed Jun 30, 2023
Last updated Nov 5, 2023

Severity

Critical
9.1
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2023-36477

GHSA ID

GHSA-793w-g325-hrw2

Source code

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