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AUSCERT External Security Bulletin Redistribution
ESB-2015.0087
Vulnerability in Network Location Awareness Service Could
Allow Security Feature Bypass (3022777)
14 January 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Microsoft Windows
Publisher: Microsoft
Operating System: Windows Server 2003
Windows Vista
Windows Server 2008
Windows 7
Windows Server 2008 R2
Windows 8
Windows 8.1
Windows Server 2012
Windows Server 2012 R2
Impact/Access: Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-0006
Original Bulletin:
https://technet.microsoft.com/en-us/library/security/MS15-005
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Microsoft Security Bulletin MS15-005 - Important
Vulnerability in Network Location Awareness Service Could Allow Security
Feature Bypass (3022777)
Published: January 13, 2015
Version: 1.0
Executive Summary
This security update resolves a privately reported vulnerability in Microsoft
Windows. The vulnerability could allow security feature bypass by
unintentionally relaxing the firewall policy and/or configuration of certain
services when an attacker on the same network as the victim spoofs responses
to DNS and LDAP traffic initiated by the victim.
This security update is rated Important for all supported editions of Windows
Vista, Windows Server 2008, Windows 7, Windows Server 2008 R2, Windows 8,
Windows Server 2012, Windows 8.1, and Windows Server 2012 R2.
Affected Software
Windows Server 2003 Service Pack 2[1]
Windows Server 2003 x64 Edition Service Pack 2[1]
Windows Server 2003 with SP2 for Itanium-based Systems[1]
Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Windows 8 for 32-bit Systems
Windows 8 for x64-based Systems
Windows 8.1 for 32-bit Systems
Windows 8.1 for x64-based Systems
Windows Server 2012
Windows Server 2012 R2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core
installation)
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core
installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core
installation)
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2 (Server Core installation)
[1]Windows Server 2003 is affected, but an update is not being issued for it.
See the Update FAQ for more information.
NLA Security Feature Bypass Vulnerability - CVE-2015-0006
A security feature bypass vulnerability exists in the Network Location
Awareness (NLA) service that could unintentionally relax the firewall policy
and/or configuration of certain services. This could increase the surface
exposed to an attacker. The vulnerability is caused when the NLA service fails
to properly validate whether a domain-connected computer is connected to the
domain or to an untrusted network. The update addresses the vulnerability by
forcing mutual authentication via Kerberos.
Successful exploitation of this vulnerability requires that an attacker be
connected to the same network as the victims computer, and that the attacker
spoof responses to DNS and LDAP traffic initiated by the victim. The
vulnerability could allow an attacker to apply a domain profile to a computer
connected to an untrusted network. Client computers connected to untrusted
networks are primarily at risk from this vulnerability.
Microsoft received information about this vulnerability through coordinated
vulnerability disclosure. When this security bulletin was issued, Microsoft
had not received any information to indicate that this vulnerability had been
publicly used to attack customers.
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