GHSA-793w-g325-hrw2 XWiki Platform vulnerable to persistent Cross-site Scripting through CKEditor Configuration pages

• Maven org.xwiki.platform:xwiki-platform-ckeditor-ui: >= 14.6-rc-1, < 14.10.6 → fixed in 14.10.6 • Maven org.xwiki.contrib:application-ckeditor-ui: >= 1.9, < 1.64.9 → fixed in 1.64.9 • Maven org.xwiki.platform:xwiki-platform-ckeditor-ui: >= 15.0-rc-1, < 15.1 → fixed in 15.1

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 • Email us at Security Mailing List