Check Point Advisories

ESF pfSense webgui deletefile Directory Traversal (CVE-2015-2295)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-0538
Date Published:	7 May 2015
Severity:	High
Last Updated:	Thursday 07 May, 2015
Source:	ESF
Industry Reference:	CVE-2015-2295
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Electric Sheep Fencing pfSense prior to 2.2.1
Vulnerability Description	A directory traversal vulnerability has been reported in Electric Sheep Fencing pfSense firewall. This vulnerability is due to insufficient validation of the deletefile HTTP request parameter in "/system_firmware_restorefullbackup.php". By convincing an authenticated user to click on a crafted link, a remote attacker can exploit this vulnerability to delete arbitrary files on the target system with root privileges.

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, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the ESF pfSense webgui deletefile Directory Traversal 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: Security Products Enforcement Violation.
Attack Information: ESF pfSense webgui deletefile Directory Traversal