Date: 15 December 2010
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AUSCERT External Security Bulletin Redistribution
Vulnerability in Windows Netlogon Service Could Allow Denial
of Service (2207559)
15 December 2010
AusCERT Security Bulletin Summary
Product: Windows Netlogon Service
Operating System: Windows Server 2003
Windows Server 2008
Impact/Access: Denial of Service -- Existing Account
CVE Names: CVE-2010-2742
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Microsoft Security Bulletin MS10-101 - Important
Vulnerability in Windows Netlogon Service Could Allow Denial of Service
Published: December 14, 2010
This security update resolves a privately reported vulnerability in the
Netlogon RPC Service on affected versions of Windows Server that are
configured to serve as domain controllers. The vulnerability could allow
denial of service if an attacker sends a specially crafted RPC packet to the
Netlogon RPC Service interface on an affected system. An attacker requires
administrator privileges on a machine that is joined to the same domain as
the affected domain controller in order to exploit this vulnerability.
This security update is rated Important for all supported editions of Windows
Server 2003, Windows Server 2008 (except Itanium-based editions), and Windows
Server 2008 R2 (except Itanium-based editions). For more information, see the
subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by correcting the validation
of user-provided data in the Netlogon RPC Service interface. For more
information about the vulnerability, see the Frequently Asked Questions (FAQ)
subsection for the specific vulnerability entry under the next section,
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*
Windows Server 2008 for 32-bit Systems Service Pack 2*
Windows Server 2008 for x64-based Systems*
Windows Server 2008 for x64-based Systems Service Pack 2*
Windows Server 2008 R2 for x64-based Systems*
*Server Core installation affected.
Netlogon RPC Null dereference DOS Vulnerability - CVE-2010-2742
A remote authenticated denial of service vulnerability exists in
implementations of the Netlogon RPC Service on affected versions of
Windows Server. An attacker who successfully exploited this vulnerability
could cause affected versions of the Windows Server to restart.
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