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CRITICAL9.0

GHSA-793w-g325-hrw2

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

Quick fix

GHSA-793w-g325-hrw2 — org.xwiki.platform:xwiki-platform-ckeditor-ui: upgrade to the fixed version with the command below.

# pom.xml: bump <version>14.10.6</version> for org.xwiki.platform:xwiki-platform-ckeditor-ui

Details

### 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 https://github.com/xwiki/xwiki-platform/commit/9d9d86179457cb8dc48b4491510537878800be4f

### References - https://jira.xwiki.org/browse/XWIKI-20590 - https://jira.xwiki.org/browse/CKEDITOR-508 - https://github.com/xwiki/xwiki-platform/commit/9d9d86179457cb8dc48b4491510537878800be4f

### For more information

If you have any questions or comments about this advisory:

* Open an issue in [Jira XWiki.org](https://jira.xwiki.org/) * Email us at [Security Mailing List](mailto:security@xwiki.org)

Are you affected?

Enter the version of the package you're using.

Affected packages

Maven/org.xwiki.platform:xwiki-platform-ckeditor-ui
Introduced in: 14.6-rc-1Fixed in: 14.10.6
Fix# pom.xml: bump <version>14.10.6</version> for org.xwiki.platform:xwiki-platform-ckeditor-ui
Maven/org.xwiki.contrib:application-ckeditor-ui
Introduced in: 1.9Fixed in: 1.64.9
Fix# pom.xml: bump <version>1.64.9</version> for org.xwiki.contrib:application-ckeditor-ui
Maven/org.xwiki.platform:xwiki-platform-ckeditor-ui
Introduced in: 15.0-rc-1Fixed in: 15.1
Fix# pom.xml: bump <version>15.1</version> for org.xwiki.platform:xwiki-platform-ckeditor-ui

References