Check Point Advisories

Digium Asterisk Denial of Service (CVE-2018-7286)

Check Point Reference: CPAI-2019-0055
Date Published: 17 Jan 2019
Severity: High
Last Updated: Sunday 20 January, 2019
Industry Reference:CVE-2018-7286
Protection Provided by:

Security Gateway
R81, R80, R77, R75

Who is Vulnerable? Digium Asterisk Open Source 13.x prior to 13.19.2
Digium Asterisk Open Source 14.x prior to 14.7.6
Digium Asterisk Open Source 15.x prior to 15.2.2
Digium Certified Asterisk 13.18 prior to 13.18-cert3
Vulnerability Description A denial of service vulnerability exists in Digium Asterisk. The vulnerability is due to improper handling of prematurely closed TCP connections after a SIP INVITE request. Successful exploitation could result in denial of service conditions on the target service.

Protection Overview

This protection detects 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 Digium Asterisk Denial of Service (CVE-2018-7286) 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:  Application Servers Protection Violation.
Attack Information:  Digium Asterisk Denial of Service (CVE-2018-7286)

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