Check Point Advisories

Microsoft Windows NTLM Information Disclosure

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0135
Date Published:	22 Mar 2023
Severity:	High
Last Updated:	Wednesday 22 March, 2023
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Windows 10 Microsoft Windows 11
Vulnerability Description	An information disclosure vulnerability exists in the NTLM component of Microsoft Windows. Successful exploitation of this vulnerability would allow remote attackers to gain access to sensitive information and 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

In the IPS tab, click Protections and find the Microsoft Windows NTLM Information Disclosure 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 Windows NTLM Information Disclosure