Check Point Advisories

ISC BIND NSEC3-Signed Zones Queries Processing Denial of Service - Ver2 (CVE-2014-0591)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-0695
Date Published:	18 May 2015
Severity:	Critical
Last Updated:	Monday 18 May, 2015
Source:
Industry Reference:	CVE-2014-0591
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	A denial of service vulnerability exists in ISC BIND. The vulnerability is due to a failure to handle queries for NSEC3-signed zones. A remote attacker may exploit this vulnerability by sending a specially crafted query.

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

In the IPS tab, click Protections and find the ISC BIND NSEC3-Signed Zones Queries Processing Denial of Service - Ver2 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: DNS Enforcement Violation.
Attack Information: ISC BIND NSEC3-Signed Zones Queries Processing Denial of Service - Ver2