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Check Point Advisories

Microsoft Windows SMB Information Disclosure (CVE-2021-28324)

Check Point Reference: CPAI-2021-0222
Date Published: 13 Apr 2021
Severity: High
Last Updated: 13 Apr 2021
Source: Microsoft CVE-2021-28324
Industry Reference:CVE-2021-28324
Protection Provided by:

Security Gateway
R80, R77, R75

Who is Vulnerable? Windows 10 Version 2004 for 32-bit Systems
Windows 10 Version 2004 for ARM64-based Systems
Windows 10 Version 2004 for x64-based Systems
Windows Server, version 2004 (Server Core installation)
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)
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 R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Microsoft Windows SMB Information Disclosure (CVE-2021-28324) 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:  Content Protection Violation.
Attack Information:  Microsoft Windows SMB Information Disclosure (CVE-2021-28324)

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