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XWiki Platform: Remote code execution from account via SearchSuggestSourceSheet
Any user with edit right on any page can execute any code on the server by adding an object of type `XWiki.SearchSuggestSourceClass` to their user profile or any other page. This compromises the confidentiality, integrity and availability of the whole XWiki installation.
To reproduce on an instance, as a user without script nor programming rights, add an object of type `XWiki.SearchSuggestSourceClass` to your profile page. On this object, set every possible property to `}}}{{async}}{{groovy}}println("Hello from Groovy!"){{/groovy}}{{/async}}` (i.e., name, engine, service, query, limit and icon). Save and display the page, then append `?sheet=XWiki.SearchSuggestSourceSheet` to the URL. If any property displays as `Hello from Groovy!}}}`, then the instance is vulnerable. |