Check Point Advisories

HTTP Payload CRLF Injection

Vulnerability
Protection

Check Point Reference:	CPAI-2022-0373
Date Published:	28 Jul 2022
Severity:	High
Last Updated:	Thursday 28 July, 2022
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A CRLF Injection over HTTP payload vulnerability has been reported. A remote attacker can exploit this issue by sending a specially crafted request to the victim. Successful exploitation would allow an attacker to change the server's behavior.

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 HTTP Payload CRLF Injection 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: HTTP Payload CRLF Injection