Check Point Advisories

Netgate pfSense Command Injection (CVE-2018-4021)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-0308
Date Published:	12 Feb 2019
Severity:	High
Last Updated:	Sunday 28 May, 2023
Source:
Industry Reference:	CVE-2018-4021
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Netgate pfSense version 2.6.0 prior to patch 13425
Vulnerability Description	A command injection vulnerability exists in Netgate pfSense. Successful exploitation results in the execution of arbitrary commands as the root user on the target 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 Netgate pfSense Command 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: Netgate pfSense Command Injection