Check Point Advisories

Microsoft Outlook Security Feature Bypass (CVE-2023-35311)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0527
Date Published:	11 Jul 2023
Severity:	High
Last Updated:	Tuesday 11 July, 2023
Source:	Microsoft CVE-2023-35311
Industry Reference:	CVE-2023-35311
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Outlook 2016 (32-bit edition) Microsoft Outlook 2016 (64-bit edition)
Vulnerability Description	A security feature bypass vulnerability exists in Microsoft Outlook. 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 Outlook Security Feature Bypass (CVE-2023-35311) 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: Content Protection Violation.
Attack Information: Microsoft Outlook Security Feature Bypass (CVE-2023-35311)