Package Instance

org.xwiki.platform:xwiki-platform-oldcore makes Incorrect Use of Privileged APIs with DocumentAuthors
The Document script API returns directly a DocumentAuthors allowing to set any authors to the document, which in consequence can allow subsequent executions of scripts since this author is used for checking rights.
Example of such attack: ``` {{velocity}} $doc.setContent('{{velocity}}$xcontext.context.authorReference{{/velocity}}') $doc.authors.setContentAuthor('xwiki:XWiki.superadmin') $doc.getRenderedContent() {{/velocity}}```

XWiki Platform vulnerable to privilege escalation via properties with wiki syntax that are executed with wrong author
XWiki Platform is a generic wiki platform. Starting in version 13.10, it's possible to use the right of an existing document content author to execute a text area property. This has been patched in XWiki 14.10, 14.4.7, and 13.10.11. There are no known workarounds.

org.xwiki.platform:xwiki-platform-oldcore vulnerable to data leak through deleted documents
### Impact

Rights added to a document are not taken into account for viewing it once it's deleted. Note that this vulnerability only impact deleted documents that where containing view rights: the view rights provided on a space of a deleted document are properly checked.

### Patches

The problem has been patched in XWiki 14.10 by checking the rights of current user: only admin and deleter of the document are allowed to view it.

### Workarounds

There is no workaround for this vulnerability other than upgrading.

### References

 * Jira ticket: https://jira.xwiki.org/browse/XWIKI-16285
 * Commit: https://github.com/xwiki/xwiki-platform/commit/d9e947559077e947315bf700c5703dfc7dd8a8d7

### For more information
If you have any questions or comments about this advisory:
* Open an issue in [Jira](https://jira.xwiki.org)
* Email us at [security ML](mailto:security@xwiki.org)