Check Point Advisories

Microsoft Windows SMB Denial of Service (CVE-2024-43642)

Vulnerability
Protection

Check Point Reference:	CPAI-2024-1058
Date Published:	12 Nov 2024
Severity:	High
Last Updated:	Tuesday 12 November, 2024
Source:	Microsoft CVE-2024-43642
Industry Reference:	CVE-2024-43642
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows Server 2025 Windows Server 2025 (Server Core installation) Windows Server 2022 Windows Server 2022 (Server Core installation) Windows 11 Version 22H2 for ARM64-based Systems Windows 11 Version 22H2 for x64-based Systems Windows 11 Version 23H2 for ARM64-based Systems Windows 11 Version 23H2 for x64-based Systems Windows Server 2022, 23H2 Edition (Server Core installation) Windows 11 Version 24H2 for ARM64-based Systems Windows 11 Version 24H2 for x64-based Systems
Vulnerability Description	A denial-of-service vulnerability exists in Microsoft Windows SMB. Successful exploitation of this vulnerability would allow a remote attacker to create a denial of service condition on the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Microsoft Windows SMB Denial of Service (CVE-2024-43642) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Windows SMB Protection Violation.
Attack Information: Microsoft Windows SMB Denial of Service (CVE-2024-43642)