Win32k ConsoleControl Offset Confusion
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.
Author(s)
- BITTER APT
- JinQuan
- MaDongZe
- TuXiaoYi
- LiHao
- KaLendsi
- Spencer McIntyre
Platform
Windows
Architectures
x64
Development
Module Options
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
msf > use exploit/windows/local/cve_2021_1732_win32k
msf exploit(cve_2021_1732_win32k) > show targets
...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) > exploit
- Collect and share all the information you need to conduct a successful and efficient penetration test
- Simulate complex attacks against your systems and users
- Test your defenses to make sure they’re ready
- Automate Every Step of Your Penetration Test
Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.
– Jim O’Gorman | President, Offensive Security