Description
The cms-fuer-motorrad-werkstaetten plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to and including 1.0.0. This is due to missing nonce validation on all eight AJAX deletion handlers: vehicles_cfmw_d_vehicle, contacts_cfmw_d_contact, suppliers_cfmw_d_supplier, receipts_cfmw_d_receipt, positions_cfmw_d_position, catalogs_cfmw_d_article, stock_cfmw_d_item, and settings_cfmw_d_catalog. None of these handlers call check_ajax_referer() or wp_verify_nonce(), nor do they perform any capability checks via current_user_can(). This makes it possible for unauthenticated attackers to delete arbitrary vehicles, contacts, suppliers, receipts, positions, catalog articles, stock items, or entire supplier catalogs via a forged request, provided they can trick a logged-in user into performing an action such as clicking a link to a malicious page.
References
https://www.wordfence.com/threat-intel/vulnerabilities/id/6895a774-7e78-4ab2-a2b3-2a333f258778?source=cve
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-vehicles.php#L98
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-vehicles.php#L100
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-suppliers.php#L108
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-stock.php#L101
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-settings.php#L191
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-receipts.php#L92
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-positions.php#L119
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-contacts.php#L93
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/trunk/includes/cfmw-catalogs.php#L88
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-vehicles.php#L98
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-vehicles.php#L100
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-suppliers.php#L108
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-stock.php#L101
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-settings.php#L191
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-receipts.php#L92
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-positions.php#L119
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-contacts.php#L93
https://plugins.trac.wordpress.org/browser/cms-fuer-motorrad-werkstaetten/tags/1.0.0/includes/cfmw-catalogs.php#L88
