Check Point Advisories

Microsoft Windows Active Directory Privilege Escalation (CVE-2021-42278; CVE-2021-42287)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-1165
Date Published:	27 Apr 2022
Severity:	High
Last Updated:	Thursday 11 January, 2024
Source:
Industry Reference:	CVE-2021-42278 CVE-2021-42287
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Windows Server 2008 Service Pack 2 Standard without Hyper-v Edition on x86 Microsoft Windows Server 2008 R2 Service Pack 1 on x64 Microsoft Windows Server 2012 Standard Edition on x86 Microsoft Windows Server 2012 R2 Microsoft Windows Server 2016 Standard Edition on X86 Microsoft Windows Server 2016 20H2 Microsoft Windows Server 2016 2004 Microsoft Windows Server 2019 Standard Edition on x86 Microsoft Windows Server 2022 - Standard Edition on X64
Vulnerability Description	A privilege escalation vulnerability exists in Microsoft Windows Active Directory. Successful exploitation of this vulnerability would allow a remote attacker to gain unauthorized access to 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 Active Directory Privilege Escalation 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 Active Directory Privilege Escalation