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Check Point Advisories

Microsoft Exchange Information Disclosure (CVE-2021-33766)

Check Point Reference: CPAI-2021-0547
Date Published: 5 Sep 2021
Severity: High
Last Updated: 5 Sep 2021
Industry Reference:CVE-2021-33766
Protection Provided by:

Security Gateway
R80, R77, R75

Who is Vulnerable? Microsoft Exchange Server
Vulnerability Description An information disclosure vulnerability exists in Microsoft Exchange. Successful exploitation could result in the disclosure of 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 Exchange Information Disclosure (CVE-2021-33766) 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:  Web Server Enforcement Violation.
Attack Information:  Microsoft Exchange Information Disclosure (CVE-2021-33766)

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