CVE-2024-41947: XWiki Platform XSS through conflict resolution
Impact
By creating a conflict when another user with more rights is currently editing a page, it is possible to execute JavaScript snippets on the side of the other user, which compromises the confidentiality, integrity and availability of the whole XWiki installation.
To reproduce on a XWiki instance, a user with admin rights needs to edit a document without saving right away. Then, as another user without any other right than edit on the specific document, change the whole content to <script>alert('XSS')</script>. When the admin user then saves the document, a conflict popup appears. If they select "Fix each conflict individually" and see an alert displaying "XSS", then the instance is vulnerable.
Patches
This has been patched in XWiki 15.10.8 and 16.3.0RC1.
Workarounds
We're not aware of any workaround except upgrading.
References
https://jira.xwiki.org/browse/XWIKI-21626 https://github.com/xwiki/xwiki-platform/commit/821d43ec45e67d45a6735a0717b9b77fffc1cd9f
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
Other sources
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. By creating a conflict when another user with more rights is currently editing a page, it is possible to execute JavaScript snippets on the side of the other user, which compromises the confidentiality, integrity and availability of the whole XWiki installation. This has been patched in XWiki 15.10.8 and 16.3.0RC1.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-41947?
CVE-2024-41947 is considered a critical vulnerability due to its potential to execute unauthorized JavaScript and compromise XWiki installations.
How do I fix CVE-2024-41947?
To fix CVE-2024-41947, upgrade to version 16.3.0-rc-1 or 15.10.8 of the affected package org.xwiki.platform:xwiki-platform-web-templates.
What systems are affected by CVE-2024-41947?
CVE-2024-41947 affects all XWiki installations from version 11.8 to 16.3.0 and specifically the org.xwiki.platform:xwiki-platform-web-templates package.
What is the impact of CVE-2024-41947?
The impact of CVE-2024-41947 includes potential execution of JavaScript on another user's session, compromising the confidentiality, integrity, and availability of the XWiki.
How can I determine if my XWiki installation is vulnerable to CVE-2024-41947?
You can determine if your XWiki installation is vulnerable to CVE-2024-41947 by checking if you are running versions of XWiki between 11.8 and 16.3.0.