XWiki Platform vulnerable to privilege escalation via properties with wiki syntax that are executed with wrong author

Impact

It's possible to use the right of an existing document content author to execute a text area property.

To reproduce:

• As an admin with programming rights, create a new user without script or programming right.
• Login with the freshly created user.
• Insert the following text in source mode in the about section:

    {{groovy}}println("hello from groovy!"){{/groovy}}

• Click "Save & View"

Patches

This has been patched in XWiki 14.10, 14.4.7, and 13.10.11.

Workarounds

No known workaround.

References

https://jira.xwiki.org/browse/XWIKI-20373

For more information

If you have any questions or comments about this advisory:

• Open an issue in Jira
• Email us at Security ML