Check Point Advisories

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

Check Point Reference: CPAI-2014-0941
Date Published: 25 Feb 2014
Severity: Critical
Last Updated: Sunday 27 July, 2014
Source: ISC AA-01078
Industry Reference:CVE-2014-0591
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? ISC BIND 9.6.x prior to 9.6-ESV-R10-P2
ISC BIND 9.7.x
ISC BIND 9.8.x prior to 9.8.6-P2
ISC BIND 9.9.x prior to 9.9.4-P2
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

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

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