Check Point Advisories

Microsoft Kerberos NULL Dereference Denial of Service (MS12-069; CVE-2012-2551)

Check Point Reference: CPAI-2012-642
Date Published: 21 Oct 2012
Severity: High
Last Updated:
Source: CVE-2012-2551
Protection Provided by:

Security Gateway

  • R71
  • R75

  • Who is Vulnerable? Windows 7 for 32-bit Systems
    Windows Server 2008 R2
    Windows Server 2008 R2 for x64-based Systems
    Vulnerability Description A denial of service vulnerability has been reported in Microsoft Kerberos.
    Update/Patch AvaliableApply patches from: MS12-069
    Vulnerability DetailsThe vulnerability is caused when Microsoft Kerberos fails to handle a specially crafted session. A remote attacker can exploit this issue by sending a specially crafted session request to the affected server. Successful exploitation would cause the server to crash, resulting in a denial of service condition.

    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, Protection tab and select the version of your choice.

    Security Gateway R75 / R71 / R70

    1. In the IPS tab, click Protections and find the Microsoft Kerberos NULL Dereference Denial of Service (MS12-069) protection using the Search tool and Edit the protection's settings.
    2. Install policy on all modules.

    SmartView Tracker will log the following entries:
    Attack Name: Windows SMB Protection Violation
    Attack Information: Microsoft Kerberos NULL Dereference Denial of Service (MS12-069)

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