Check Point Advisories

TLSv1.1 Deprecated Version

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0092
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?
Vulnerability Description	Secure Sockets Layer (SSL) is cryptographic protocols that provide security for communications over networks such as the Internet. SSL encrypts the segments of network connections at the Application Layer to ensure secure end-to-end transit at the Transport Layer. SSL version 3 is an older implementation of the protocol which is still commonly used. Only TLS1.1 Server Hello will be detected by this detection.

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 TLSv1.1 Deprecated Version 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: SSL Enforcement Violation.
Attack Information: TLSv1.1 Deprecated Version