Check Point Advisories

PHP-Based URL Obfuscation Techniques

Vulnerability
Protection

Check Point Reference:	CPAI-2022-0040
Date Published:	6 Apr 2022
Severity:	High
Last Updated:	Thursday 27 October, 2022
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Known exploits could potentially bypass security products by using PHP functions as obfuscation techniques. Obfuscated exploits might not be detected by IDS and IPS systems, thus allowing attackers to successfully attack the target web client.

Protection Overview

This protection will detect obfuscated URLs.

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 PHP-Based URL Obfuscation Techniques 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: PHP-Based URL Obfuscation Techniques