Check Point Advisories

Asterisk Skinny Channel Driver Remote Denial of Service (CVE-2007-4280)

Check Point Reference: CPAI-2015-1208
Date Published: 14 Oct 2015
Severity: Low
Last Updated: Thursday 09 June, 2016
Source:
Industry Reference:CVE-2007-4280
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Digium Asterisk Open Source 1.4.x
Digium AsteriskNOW pre-release -beta7
Digium Asterisk Appliance 1.0.x - 1.0.3
Digium Asterisk Appliance Developer Kit 0.x.x - 0.7.0
Vulnerability Description Asterisk is vulnerable to a denial of service attack, caused by a vulnerability in the Skinny channel driver. By sending a specially-crafted "CAPABILITIES_RES_MESSAGE" packet with an overly large capabilities count, a remote attacker with an authenticated session could exploit this vulnerability causing the driver to crash.

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

  1. In the IPS tab, click Protections and find the Asterisk Skinny Channel Driver Remote Denial of Service protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  VoIP Enforcement Violation.
Attack Information:  Asterisk Skinny Channel Driver Remote Denial of Service

×
  Feedback
This website uses cookies for its functionality and for analytics and marketing purposes. By continuing to use this website, you agree to the use of cookies. For more information, please read our Cookies Notice.
OK