Check Point Advisories

Digium Asterisk File Descriptor Denial of Service (CVE-2014-2287)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-1348
Date Published:	2 Jun 2014
Severity:	Critical
Last Updated:	Monday 02 June, 2014
Source:	CVE-2014-2287
Protection Provided by:	Security Gateway R77 R76 R75
Who is Vulnerable?	Digium Asterisk Open Source 1.8.x prior to 1.8.26.1 Digium Asterisk Open Source 11.x prior to 11.8.1 Digium Asterisk Open Source 12.x prior to 12.1.1 Digium Certified Asterisk 1.8.15 prior to 1.8.15-cert5 Digium Certified Asterisk 11.6 prior to 11.6-cert2
Vulnerability Description	A denial of service condition has been reported in Digium Asterisk. The vulnerability is due to file descriptor exhaustion from a large number of crafted SIP INVITE requests. A remote attacker can exploit this vulnerability to cause a denial of service condition.

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 R77 / R76 / R75 / R71 / R70

In the IPS tab, click Protections and find the Digium Asterisk File Descriptor Denial of Service 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:  VoIP Enforcement Violation.
Attack Information:  Digium Asterisk File Descriptor Denial of Service