Check Point Advisories

Quagga aspath_put BGP Session Drop Denial of Service (CVE-2017-16227)

Vulnerability
Protection

Check Point Reference:	CPAI-2018-0503
Date Published:	30 May 2018
Severity:	Medium
Last Updated:	Sunday 03 June, 2018
Source:	Quagga
Industry Reference:	CVE-2017-16227
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Quagga Quagga prior to 1.2.2
Vulnerability Description	A denial-of-service vulnerability exists in Quagga. The vulnerability is due to an improper calculation of AS_PATH. A remote attacker can exploit this vulnerability by sending a specially crafted request to the affected service. Successful exploitation would cause the target to crash, resulting in a denial of service condition.

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 Quagga aspath_put BGP Session Drop 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: Web Server Enforcement Violation.
Attack Information: Quagga aspath_put BGP Session Drop Denial of Service