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Microsoft DNS Server Denial of Service (MS12-017; CVE-2012-0006)

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Check Point Reference: CPAI-2012-087
Date Published:
Severity:
Source: Microsoft Security Bulletin MS12-017
Industry Reference(s): CVE-2012-0006
Protection Provided by: Security Gateway
  • R70
  • R71
  • R75
Who is Vulnerable?
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP2 for Itanium-based Systems
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Vulnerability Description
A denial of service vulnerability has been reported in Microsoft DNS servers.
Update/Patch Available
Apply patches from: MS12-017
Vulnerability Details
The vulnerability is due to the way that the DNS server improperly handles objects in memory when looking up the resource record of a domain. A remote attacker may exploit this issue by sending a specially crafted DNS query to a DNS server. Successful exploitation may cause the server to crash, resulting in a denial of service condition.

Protection Overview
IPS will detect and block specially crafted DNS 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, 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, find the Microsoft DNS Server Denial of Service (MS12-017) protection using the Search tool and double-click on the protection. 
  2. In the Protection Details window, select the required profile and then click on Edit. Choose the protection's Action (Override IPS Policy with: Prevent/Detect), and apply Additional Settings. 
  3. Configure the protection to your requirements. 
  4. Install policy on all modules.

    5. How Do I Know if My Network is Under Attack?
    SmartView Tracker will log the following entries:
    Attack Name: DNS Enforcement Violation
    Attack Information: Microsoft DNS server denial of service (MS12-017)