Check Point Advisories

PowerDNS Recursor Denial of Service (CVE-2014-3614)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-1922
Date Published:	23 Oct 2014
Severity:	High
Last Updated:	Thursday 20 November, 2014
Source:	PowerDNS.COM BV
Industry Reference:	CVE-2014-3614
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	PowerDNS PowerDNS Recursor 3.6.0
Vulnerability Description	A denial-of-service vulnerability has been found in PowerDNS Recursor. The vulnerability is due to insufficient validation of DNS queries. A remote unauthenticated attacker could exploit this vulnerability by sending maliciously crafted DNS queries to a vulnerable server. Successful exploitation would result in a crash of the server process leading to denial of service to legitimate users.

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 PowerDNS Recursor 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: DNS Enforcement Violation.
Attack Information: PowerDNS Recursor Denial of Service