Check Point Advisories

Directory Traversal Obfuscations

Check Point Reference: CPAI-2023-0326
Date Published: 17 May 2023
Severity: Critical
Last Updated: Thursday 24 August, 2023
Protection Provided by:

Security Gateway
R81, R80, R77, R75

Who is Vulnerable?
Vulnerability Description To avoid detection by security devices, attackers might use different char encodings in HTTP(S) traffic to conceal their actions. Successful exploitation could allow an attacker to disclose confidential information or execute arbitrary code on affected systems.

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

  1. In the IPS tab, click Protections and find the Directory Traversal Obfuscations protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Server Enforcement Violation.
Attack Information:  Directory Traversal Obfuscations

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