Check Point Advisories

Microsoft Office Security Feature Bypass (CVE-2023-21715)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0077
Date Published:	14 Feb 2023
Severity:	High
Last Updated:	Tuesday 14 February, 2023
Source:	Microsoft CVE-2023-21715
Industry Reference:	CVE-2023-21715
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft 365 Apps for Enterprise for 64-bit Systems Microsoft 365 Apps for Enterprise for 32-bit Systems
Vulnerability Description	A security bypass vulnerability exists in Microsoft Office. Successful exploitation of this vulnerability would allow remote attackers to bypass security tests and protocols 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 Office Security Feature Bypass (CVE-2023-21715) 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 Office Security Feature Bypass (CVE-2023-21715)