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Secunia Security Advisory 38512

Secunia Security Advisory 38512
Posted Feb 9, 2010
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in Microsoft Windows, which can be exploited by malicious users to cause a DoS (Denial of Service).

tags | advisory, denial of service
systems | windows
SHA-256 | 3cf3aa0fa33d7cbd101a0206114d61dd7c22ed4ae4c47841bc768dd2a9c45169

Secunia Security Advisory 38512

Change Mirror Download
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Secunia integrated with Microsoft WSUS
http://secunia.com/blog/71/



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TITLE:
Microsoft Windows Kerberos Ticket Renewal Request Denial of Service

SECUNIA ADVISORY ID:
SA38512

VERIFY ADVISORY:
http://secunia.com/advisories/38512/

DESCRIPTION:
A vulnerability has been reported in Microsoft Windows, which can be
exploited by malicious users to cause a DoS (Denial of Service).

The vulnerability is caused due to a NULL pointer dereference error
in the Kerberos implementation when handling ticket renewal requests
coming from a non-Windows Kerberos domain. This can be exploited to
cause a Windows domain controller to stop responding via a specially
crafted renewal request for an existing Ticket-Granting-Ticket
(TGT).

NOTE: This vulnerability only affects domain controllers that have a
mixed-mode Kerberos realm defined.

SOLUTION:
Apply patches.

Microsoft Windows 2000 Server SP4:
http://www.microsoft.com/downloads/details.aspx?familyid=56a9afba-a6ee-4fb9-ba85-e51d9f94de27

Windows Server 2003 SP2:
http://www.microsoft.com/downloads/details.aspx?familyid=738e2fda-96fc-413d-a5c7-74b1fac1d6b3

Windows Server 2003 x64 Edition SP2:
http://www.microsoft.com/downloads/details.aspx?familyid=f8ad539d-8191-4864-977b-ad4e31c04ba0

Windows Server 2003 with SP2 for Itanium-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=d549c927-add7-4d83-bfc7-15dc35663dfb

Windows Server 2008 for 32-bit Systems (optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?familyid=75327470-0f14-4cdd-bcb7-64684c61c267

Windows Server 2008 for x64-based Systems (optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?familyid=7d0f8f81-fc10-450a-a653-06f89acba9fa

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
MS10-014 (KB977290):
http://www.microsoft.com/technet/security/Bulletin/MS10-014.mspx

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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