Check Point Advisories

Facebook Fizz Integer Overflow Denial of Service (CVE-2019-3560)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-1528
Date Published:	26 Nov 2019
Severity:	High
Last Updated:	Tuesday 26 November, 2019
Source:
Industry Reference:	CVE-2019-3560
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Fizz
Vulnerability Description	A denial-of-service vulnerability exists in Facebook Fizz. The vulnerability is due to an integer overflow in the handling of TLS 1.3 early data requests. A successful attack could create a denial of service condition to the Discovery service.

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 R80 / R77 / R75

In the IPS tab, click Protections and find the Facebook Fizz Integer Overflow Denial of Service (CVE-2019-3560) 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: Facebook Fizz Integer Overflow Denial of Service (CVE-2019-3560)