CVE-2022-35751: Windows Hyper-V Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.8)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2022-Aug

Released

2022-08-09

Last Updated

2022-08-19

EPSS Score

6.58% (percentile: 91.2%)

FAQ

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to win a race condition. What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges. According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? Successful exploitation of this vulnerability could allow a Hyper-V guest to affect the functionality of the Hyper-V host.

Affected Products (23)

Windows

• Windows 10 Version 1809 for x64-based Systems
• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows 10 Version 21H1 for x64-based Systems
• Windows Server 2022
• Windows Server 2022 (Server Core installation)
• Windows Server, version 20H2 (Server Core Installation)
• Windows 11 version 21H2 for x64-based Systems
• Windows 10 Version 21H2 for x64-based Systems
• Windows 10 for x64-based Systems
• Windows 10 Version 1607 for x64-based Systems
• Windows Server 2016
• Windows Server 2016 (Server Core installation)
• Windows 8.1 for x64-based systems

ESU

• Windows 7 for x64-based Systems Service Pack 1
• Windows Server 2008 for x64-based Systems Service Pack 2
• Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
• Windows Server 2008 R2 for x64-based Systems Service Pack 1
• Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
• Windows Server 2012
• Windows Server 2012 (Server Core installation)
• Windows Server 2012 R2
• Windows Server 2012 R2 (Server Core installation)

Security Updates (14)

• 5016623
• 5016616
• 5016627
• 5016629
• 5016639
• 5016622
• 5016676
• 5016679
• 5016681
• 5016683
• 5016669
• 5016686
• 5016672
• 5016684

Acknowledgments

<a href="https://twitter.com/securiteam_ssd">Yongil Lee</a> with <a href="https://ssd-disclosure.com/">SSD Secure Disclosure</a>, liuquan of K360 Security, Phan Thanh Duy (@PTDuy), Le Huu Quang Linh (@linhlhq) of STAR Labs working with Trend Micro Zero Day Initiative

Revision History

• 2022-08-09: Information published.
• 2022-08-19: Added an acknowledgement. This is an informational change only.