Check Point Advisories

ESF pfSense webConfigurator firewall_aliases_edit.php Input Validation Error

Vulnerability
Protection

Check Point Reference:	CPAI-2014-1130
Date Published:	9 Mar 2014
Severity:	Medium
Last Updated:	Sunday 09 March, 2014
Source:
Protection Provided by:	Security Gateway R75 and above
Who is Vulnerable?	Electric Sheep Fencing pfSense prior to 2.1.1
Vulnerability Description	An input validation error vulnerability exists in Electric Sheep Fencing pfSense firewall. The vulnerability is due to insufficient validation of user supplied input when processing the addressN parameter in firewall_aliases_edit.php. A remote authenticated attacker could exploit this vulnerability by sending a malicious request using the vulnerable parameter to the firewall.

Protection Overview

This protection will detect and block 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, Protection tab and select the version of your choice.

Security Gateway R70 / R71 / R75 and above

In the IPS tab, click Protections and find the ESF pfSense webConfigurator firewall_aliases_edit.php Input Validation Error protection using the Search tool and Edit the protection's settings.
Install policy on all modules.

SmartView Tracker will log the following entries:

Attack Name:  Security Products Enforcement Violation.
Attack Information:  ESF pfSense webConfigurator firewall_aliases_edit.php Input Validation Error