Check Point Advisories

Multiple DNS NO SUCH NAME Error Responses (CVE-2012-0006)

Vulnerability
Protection

Check Point Reference:	CPAI-2013-2937
Date Published:	22 Sep 2013
Severity:	N/A
Last Updated:	Sunday 15 September, 2013
Source:
Industry Reference:	CVE-2012-0006
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description	The Domain Name System (DNS) is an hierarchical distributed naming system for computers, services, or any resource connected to the Internet or a private network. When a DNS client needs to look up a name used in a program, it queries DNS servers to resolve the name. If the query names are non-existent or wildcard-matching domain names, the server response will contain "No such name" response. There are cases in which certain traffic, although not intended for malicious use, is very unsafe, since it may transfer shellcode which is undetectable by IPS.

Protection Overview

IPS will detect and block Multiple DNS "No Such Name" error responses.

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 / R71 / R70

In the IPS tab, click Protections and find the Multiple DNS NO SUCH NAME Error Responses 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: Multiple DNS NO SUCH NAME Error Responses