Check Point Advisories

Windows PPTP Protocol Use After Free (CVE-2022-21972)

Vulnerability
Protection

Check Point Reference:	CPAI-2022-0822
Date Published:	17 Nov 2022
Severity:	High
Last Updated:	Wednesday 14 December, 2022
Source:
Industry Reference:	CVE-2022-21972
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows 10 version 1909 for 32-bit systems Windows 10 version 1909 for x64-based systems Windows 10 version 1909 for ARM64-based systems Windows 10 version 21H1 for x64-based systems Windows 10 version 21H1 for ARM64-based systems Windows 10 version 21H1 for 32-bit systems 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 for x64-based systems Windows 11 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
Vulnerability Description	A use-after-free vulnerability exists in Windows PPTP Protocol. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code 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 Windows PPTP Protocol Use After Free (CVE-2022-21972) 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: Windows PPTP Protocol Use After Free (CVE-2022-21972)