Headline
CVE-2023-46243: Privilege escalation/RCE via the edit action
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions it’s possible for a user to execute any content with the right of an existing document’s content author, provided the user have edit right on it. A crafted URL of the form /xwiki/bin/edit//?content=%7B%7Bgroovy%7D%7Dprintln%28%22Hello+from+Groovy%21%22%29%7B%7B%2Fgroovy%7D%7D&xpage=view can be used to execute arbitrary groovy code on the server. This vulnerability has been patched in XWiki versions 14.10.6 and 15.2RC1. Users are advised to update. There are no known workarounds for this issue.
Impact
It’s possible for a user to execute any content with the right of an existing document’s content author, provided the user have edit right on it.
To reproduce:
- Log in as a user without programming or script right.
- Open the URL /xwiki/bin/edit//?content=%7B%7Bgroovy%7D%7Dprintln%28%22Hello+from+Groovy%21%22%29%7B%7B%2Fgroovy%7D%7D&xpage=view, where is the URL of your XWiki installation and is the path to a document whose content author has programming right (or script right) and on which the current user has edit right.
The text “Hello from Groovy!” is displayed in the page content, showing that the Groovy macro has been executed, which should not be the case for a user without programming right.
Patches
This has been patched in XWiki 14.10.6 and 15.2RC1.
Workarounds
There are no known workarounds for it.
References
- https://jira.xwiki.org/browse/XWIKI-20385
- a0e6ca0
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
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### Impact In XWiki Platform, it's possible for a user to execute any content with the right of an existing document's content author, provided the user have edit right on it. The reason for this is that the edit action sets the content without modifying the content author. To reproduce: * Log in as a user without programming or script right. * Open the URL `<xwiki-host>/xwiki/bin/edit/<document>/?content=%7B%7Bgroovy%7D%7Dprintln%28%22Hello+from+Groovy%21%22%29%7B%7B%2Fgroovy%7D%7D&xpage=view`, where `<xwiki-host>` is the URL of your XWiki installation and `<document>` is the path to a document whose content author has programming right (or script right) and on which the current user has edit right. The text "Hello from Groovy!" is displayed in the page content, showing that the Groovy macro has been executed, which should not be the case for a user without programming right. ### Patches This has been patched in XWiki 14.10.6 and 15.2RC1. ### Workarounds There are no known work...