Check Point Advisories

Microsoft SharePoint Server Authentication Bypass (CVE-2023-29357)

Check Point Reference: CPAI-2023-0419
Date Published: 13 Jun 2023
Severity: Critical
Last Updated: Sunday 17 March, 2024
Source: Microsoft CVE-2023-29357
Industry Reference:CVE-2023-29357
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Microsoft SharePoint Server 2019
Vulnerability Description An authentication bypass vulnerability exists in Microsoft SharePoint Server. Successful exploitation of this vulnerability would allow remote attackers to gain unauthorized access into 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

  1. In the IPS tab, click Protections and find the Microsoft SharePoint Server Authentication Bypass (CVE-2023-29357) 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 SharePoint Server Authentication Bypass (CVE-2023-29357)

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