CVE-2023-46244: Privilege escalation in Xwiki platform

Impact

In XWiki Platform, it's possible for a user to write a script in which any velocity content is executed with the right of any other document content author.

To reproduce:

As a user with script but not programming right, create a document with the following content:

{{velocity}} #set($main = $xwiki.getDocument('AppWithinMinutes.DynamicMessageTool')) $main.setTitle('$doc.getDocument().getContentAuthor()') $main.getPlainTitle() {{/velocity}}

Since this API require programming right and the user does not have it, the expected result is $doc.document.authors.contentAuthor (not executed script), unfortunately with the security vulnerability we get XWiki.superadmin which shows that the title was executed with the right of the unmodified document.

Patches

This has been patched in XWiki 14.10.7 and 15.2-RC-1.

Workarounds

There are no known workarounds for it.

References

https://jira.xwiki.org/browse/XWIKI-20624 https://github.com/xwiki/xwiki-platform/commit/11a9170dfe63e59f4066db67f84dbfce4ed619c6 https://jira.xwiki.org/browse/XWIKI-20625 https://github.com/xwiki/xwiki-platform/commit/41d7dca2d30084966ca6a7ee537f39ee8354a7e3

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