Check Point Advisories

PHP Session Upload Progress Remote Code Execution

Vulnerability
Protection

Check Point Reference:	CPAI-2021-0733
Date Published:	29 Sep 2021
Severity:	High
Last Updated:	Wednesday 29 September, 2021
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	PHP 7.3.15-3
Vulnerability Description	A remote code execution vulnerability exists in PHP PHP_SESSION_UPLOAD_PROGRESS session. 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 PHP Session Upload Progress Remote Code Execution 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 Session Upload Progress Remote Code Execution