Check Point Advisories

Microsoft Message Queuing Denial of Service (CVE-2023-21769)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0442
Date Published:	18 Jul 2023
Severity:	High
Last Updated:	Tuesday 18 July, 2023
Source:
Industry Reference:	CVE-2023-21769
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows 10 Version 1809 for 32-bit Systems Windows 10 Version 1809 for x64-based Systems Windows 10 Version 1809 for ARM64-based Systems Windows Server 2019 Windows Server 2019 (Server Core installation) Windows Server 2022 Windows Server 2022 (Server Core installation) Windows 10 Version 20H2 for x64-based Systems Windows 10 Version 20H2 for 32-bit Systems Windows 10 Version 20H2 for ARM64-based Systems Windows 11 version 21H2 for x64-based Systems Windows 11 version 21H2 for ARM64-based Systems Windows 10 Version 21H2 for 32-bit Systems Windows 10 Version 21H2 for ARM64-based Systems Windows 10 Version 21H2 for x64-based Systems Windows 11 Version 22H2 for ARM64-based Systems Windows 11 Version 22H2 for x64-based Systems Windows 10 Version 22H2 for x64-based Systems Windows 10 Version 22H2 for ARM64-based Systems Windows 10 Version 22H2 for 32-bit Systems Windows 10 for 32-bit Systems Windows 10 for x64-based Systems Windows 10 Version 1607 for 32-bit Systems Windows 10 Version 1607 for x64-based Systems Windows Server 2016 Windows Server 2016 (Server Core installation) Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2012 Windows Server 2012 (Server Core installation) Windows Server 2012 R2 Windows Server 2012 R2 (Server Core installation)
Vulnerability Description	A denial of service vulnerability exists in Microsoft Message Queuing. Successful exploitation of this vulnerability would allow a remote attacker to create a denial of service condition 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 Message Queuing Denial of Service (CVE-2023-21769) 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: Web Server Enforcement Violation.
Attack Information: Microsoft Message Queuing Denial of Service (CVE-2023-21769)