org.xwiki.platform:xwiki-platform-wiki-ui-mainwiki Eval Injection vulnerability

Impact

Any user with view rights WikiManager.DeleteWiki can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the wikiId url parameter.

A proof of concept exploit is to open /xwiki/bin/view/WikiManager/DeleteWiki?wikiId=%22+%2F%7D%7D+%7B%7Basync+async%3D%22true%22+cached%3D%22false%22+context%3D%22doc.reference%22%7D%7D%7B%7Bgroovy%7D%7Dprintln%28%22Hello+from+groovy%21%22%29%7B%7B%2Fgroovy%7D%7D%7B%7B%2Fasync%7D%7D where is the URL of your XWiki installation.

Patches

The problem has been patched on XWiki 13.10.11, 14.4.7, and 14.10.

Workarounds

The issue can be fixed manually applying this patch.

If you have any questions or comments about this advisory:

• Open an issue in Jira XWiki.org
• Email us at Security Mailing List