Check Point Advisories

Asterisk PJSIP Information Disclosure (CVE-2018-12227)

Vulnerability
Protection

Check Point Reference:	CPAI-2018-1200
Date Published:	24 Oct 2019
Severity:	Medium
Last Updated:	Sunday 19 January, 2020
Source:
Industry Reference:	CVE-2018-12227
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Asterisk Asterisk Open Source 13.x prior to 13.21.1 47Asterisk Asterisk Open Source 14.x prior to 14.7.7 48Asterisk Asterisk Open Source 15.x prior to 15.4.1 49Asterisk Certified Asterisk 13.18-cert before 13.18-cert4 50Asterisk Certified Asterisk 13.21-cert before 13.21-cert2
Vulnerability Description	An information disclosure vulnerability has been reported in Asterisk PJSIP. Successful exploitation could result of endpoint presence disclosure to the remote user.

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

In the IPS tab, click Protections and find the Asterisk PJSIP Information Disclosure (CVE-2018-12227) 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: Media Player Enforcement Violation.
Attack Information: Asterisk PJSIP Information Disclosure (CVE-2018-12227)