Check Point Advisories

Common Path Bash Obfuscations

Vulnerability
Protection

Check Point Reference:	CPAI-2023-0381
Date Published:	15 Jun 2023
Severity:	High
Last Updated:	Wednesday 16 August, 2023
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Known exploits could potentially bypass security products by using question marks and asterisks as wild card in common path. Obfuscated exploits might not be detected by IDS and IPS systems, thus allowing attackers to successfully attack the target web server.

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 Common Path Bash Obfuscations 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: Common Path Bash Obfuscations