Package Instance

Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
XWiki Platform is a generic wiki platform. Starting in 4.5-rc-1 and prior to versions 14.10.15, 15.5.2, and 15.7-rc-1, the search administration interface does not properly escape the id and label of search user interface extensions, allowing the injection of XWiki syntax containing script macros including Groovy macros that allow remote code execution, impacting the confidentiality, integrity and availability of the whole XWiki instance. This attack can be executed by any user who can edit some wiki page like the user's profile (editable by default) as user interface extensions that will be displayed in the search administration can be added on any document by any user. The necessary escaping has been added in XWiki 14.10.15, 15.5.2 and 15.7RC1. As a workaround, the patch can be applied manually applied to the page `XWiki.SearchAdmin`.

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.

XWiki Platform: Remote code execution as guest via DatabaseSearch
XWiki's database search allows remote code execution through the search text. This allows remote code execution for any visitor of a public wiki or user of a closed wiki as the database search is by default accessible for all users. This impacts the confidentiality, integrity and availability of the whole XWiki installation.