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DNS ANY Request Malformed Payload Denial of Service


Check Point Reference: CPAI-2012-1295
Date Published:
Source: ISC
Protection Provided by: Security Gateway
  • R70
  • R71
  • R75
Who is Vulnerable?
DNS servers
Vulnerability Description
A denial of service vulnerability has been reported in DNS servers.
Vulnerability Details
The vulnerability is due to the way that the DNS server improperly handles objects in memory. A remote attacker can exploit this issue by sending a specially crafted DNS ANY query to a DNS server. Successful exploitation would cause the server to crash, resulting in a denial of service condition.

Protection Overview
IPS will detect and block specially crafted DNS queries sent to the server.

In order for the protection to be activated, update your product to the latest update. For information on how to update , go to SBP-2006-05, Protection tab and select the version of your choice.

To configure the defense, select your product from the list below and follow the related protection steps.

Security Gateway R75 / R71 / R70

How Can I Protect My Network?

  1. In the IPS tab, click Protections and find the DNS ANY Request Malformed Payload Denial of Service protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: DNS Enforcement Violation
Attack Information: DNS ANY Request Malformed Payload Denial of Service