Check Point Advisories

Microsoft Windows Network File System Remote Code Execution (CVE-2022-26937)

Vulnerability
Protection

Check Point Reference:	CPAI-2022-0241
Date Published:	17 May 2022
Severity:	Critical
Last Updated:	Monday 06 March, 2023
Source:	Microsoft CVE-2022-26937
Industry Reference:	CVE-2022-26937
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows Server 2019 Windows Server 2019 (Server Core installation) Windows Server 2022 Windows Server 2022 (Server Core installation) Windows Server, version 20H2 (Server Core Installation) Windows Server 2016 Windows Server 2016 (Server Core installation) Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 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)
Vulnerability Description	A remote code execution vulnerability exists in Microsoft Windows. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code 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 Network File System Remote Code Execution (CVE-2022-26937) 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: NFS Protection Violation.
Attack Information: Microsoft Windows Network File System Remote Code Execution (CVE-2022-26937)