Staying Safe in Times of Cyber Uncertainty
Check Point Advisories

Microsoft Windows NFS ONCRPC XDR Driver Information Disclosure (CVE-2022-21993)

Check Point Reference: CPAI-2022-0336
Date Published: 7 Jul 2022
Severity: High
Last Updated: Thursday 07 July, 2022
Source:
Industry Reference:CVE-2022-21993
Protection Provided by:

Security Gateway
R81, R80, R77, R75

Who is Vulnerable? Windows 10 Version 21H1 for ARM64-based Systems
Windows 10 Version 21H1 for 32-bit Systems
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows Server 2022 Azure Edition Core Hotpatch
Windows 10 Version 20H2 for x64-based Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows 10 Version 20H2 for ARM64-based Systems
Windows Server, version 20H2 (Server Core Installation)
Windows 11 for x64-based Systems
Windows 11 for ARM64-based Systems
Windows 10 Version 21H2 for 32-bit Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for x64-based Systems
Vulnerability Description An information disclosure vulnerability exists in Microsoft Windows. Successful exploitation of this vulnerability would allow a remote attacker to obtain sensitive information.

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

  1. In the IPS tab, click Protections and find the Microsoft Windows NFS ONCRPC XDR Driver Information Disclosure (CVE-2022-21993) protection using the Search tool and Edit the protection's settings.
  2. 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 NFS ONCRPC XDR Driver Information Disclosure (CVE-2022-21993)

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