Check Point Advisories

FreePBX Recording Interface File Upload Code Execution (CVE-2010-3490)

Vulnerability
Protection

Check Point Reference:	CPAI-2010-360
Date Published:	3 Nov 2010
Severity:	High
Last Updated:	Wednesday 03 November, 2010
Source:
Industry Reference:	CVE-2010-3490
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	FreePBX is an open source software implementation of a telephone Private Branch eXchange (PBX). It allows a number of attached telephones to make calls to one another, and to connect to other telephone services including the public switched telephone network. A code execution vulnerability exists in FreePBX software. The vulnerability is due to a design error in the system recordings interface while handling uploaded files. The software does not properly check the file type being uploaded as well as the user extension (phone number) that can be manipulated to trigger directory traversal. This can be exploited by remote attackers to upload malicious files at arbitrary locations and execute arbitrary code with the privileges of the user running Apache web server.

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 FreePBX Recording Interface File Upload Code Execution 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: FreePBX recording interface file upload code execution