Check Point Advisories

Digium Asterisk non-SIP URIs Denial-of-Service (CVE-2017-14098)

Vulnerability
Protection

Check Point Reference:	CPAI-2017-0801
Date Published:	27 Sep 2017
Severity:	High
Last Updated:	Wednesday 11 January, 2023
Source:	Digium
Industry Reference:	CVE-2017-14098
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Digium Asterisk Open Source prior to 13.17.1 Digium Asterisk Open Source prior to 14.6.1
Vulnerability Description	A denial-of-service vulnerability exists in Digium Asterisk. The vulnerability is due to improper handling of non-SIP URIs within the sanitize_tdata() function. A remote, unauthenticated attacker could exploit this vulnerability by sending specially crafted SIP packets to an Asterisk server.

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 R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Digium Asterisk non-SIP URIs Denial-of-Service 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: VoIP Enforcement Violation.
Attack Information: Digium Asterisk non-SIP URIs Denial-of-Service