Check Point Advisories

Microsoft Windows Remote Code Execution (CVE-2021-34527)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-1666
Date Published:	26 Feb 2023
Severity:	High
Last Updated:	Monday 16 September, 2024
Source:
Industry Reference:	CVE-2021-34527
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Windows 10 1507 prior to 10.0.10240.18969 Microsoft Windows 10 1607 prior to 10.0.14393.4470 Microsoft Windows 10 1809 prior to 10.0.17763.2029 Microsoft Windows 10 20h2 prior to 10.0.19042.1083 Microsoft Windows 10 21h2 prior to 10.0.19044.1415 Microsoft Windows 10 22h2 prior to 10.0.19045.2251 Microsoft Windows 11 21h2 prior to 10.0.22000.318 Microsoft Windows 11 22h2 prior to 10.0.22621.674 Microsoft Windows 7 32-bit Service Pack 1 Microsoft Windows 8.1 x86 (32-bit) Microsoft Windows RT 8.1 Microsoft Windows Server 2008 Service Pack 2 Microsoft Windows Server 2008 R2 Service Pack 1 Datacenter Edition on x64 Microsoft Windows Server 2012 Microsoft Windows Server 2012 R2 DataCenter Edition Microsoft Windows Server 2016 prior to 10.0.14393.4470 Microsoft Windows Server 2019 prior to 10.0.17763.2029 Microsoft Windows Server 2022 prior to 10.0.20348.230 Microsoft Windows Server 20H2 prior to 10.0.19042.1083
Vulnerability Description	A remote code execution vulnerability exists in Windows Print Spooler service. 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 Remote Code Execution (CVE-2021-34527) 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 Remote Code Execution (CVE-2021-34527)