CVE-2023-28233: Windows Secure Channel Denial of Service Vulnerability

Overview

Severity

High (CVSS 7.5)

CVSS Vector

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

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2023-Apr

Released

2023-04-11

EPSS Score

3.89% (percentile: 88.3%)

FAQ

Does this vulnerability affect all versions of TLS? No. Only those devices running TLS 1.3 are affected. For more information on supported TLS implementations please visit: https://learn.microsoft.com/en-us/windows/win32/secauthn/protocols-in-tls-ssl--schannel-ssp-

Affected Products (6)

Windows

• Windows Server 2022
• Windows Server 2022 (Server Core installation)
• Windows 11 version 21H2 for x64-based Systems
• Windows 11 version 21H2 for ARM64-based Systems
• Windows 11 Version 22H2 for ARM64-based Systems
• Windows 11 Version 22H2 for x64-based Systems

Security Updates (3)

• 5025230
• 5025224
• 5025239

Acknowledgments

<a href="https://twitter.com/trueunitysect">Quan Luo </a> with Codesafe Team of QI-ANXIN Legendsec Group

Revision History

• 2023-04-11: Information published.