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             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0516
          Unauthorized Digital Certificates Could Allow Spoofing
                                4 June 2012

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Access Confidential Data       -- Remote/Unauthenticated
                   Provide Misleading Information -- Remote/Unauthenticated
Resolution:        Patch/Upgrade

Original Bulletin: 
   http://technet.microsoft.com/en-us/security/advisory/2718704

Comment: Details on the Microsoft TechNet Blogs are available here:
         http://blogs.technet.com/b/msrc/archive/2012/06/03/microsoft-releases-security-advisory-2718704.aspx

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Microsoft Security Advisory (2718704)
Unauthorized Digital Certificates Could Allow Spoofing

Published: Sunday, June 03, 2012

Version: 1.0


General Information

Executive Summary

Microsoft is aware of active attacks using unauthorized digital certificates 
derived from a Microsoft Certificate Authority. An unauthorized certificate 
could be used to spoof content, perform phishing attacks, or perform 
man-in-the-middle attacks. This issue affects all supported releases of 
Microsoft Windows.

Microsoft is providing an update for all supported releases of Microsoft 
Windows. The update revokes the trust of the following intermediate CA 
certificates:

    Microsoft Enforced Licensing Intermediate PCA (2 certificates)
    Microsoft Enforced Licensing Registration Authority CA (SHA1)

Recommendation. For supported releases of Microsoft Windows, Microsoft 
recommends that customers apply the update immediately using update management 
software, or by checking for updates using the Microsoft Update service. For 
more information, see the Suggested Actions section of this advisory. For 
affected devices, no update is available at this time.


Advisory Details

Issue References

For more information about this issue, see the following references:

References	                        Identification

Microsoft Knowledge Base Article	2718704 

Affected Software and Devices

This advisory discusses the following affected software and devices.

Operating System
Windows XP Service Pack 3
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP2 for Itanium-based Systems
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
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1

Server Core installation option
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 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

Affected Devices
Windows Mobile 6.x
Windows Phone 7
Windows Phone 7.5


Other Information

Microsoft Active Protections Program (MAPP)

To improve security protections for customers, Microsoft provides vulnerability 
information to major security software providers in advance of each monthly 
security update release. Security software providers can then use this 
vulnerability information to provide updated protections to customers via their 
security software or devices, such as antivirus, network-based intrusion 
detection systems, or host-based intrusion prevention systems. To determine 
whether active protections are available from security software providers, 
please visit the active protections websites provided by program partners, 
listed in Microsoft Active Protections Program (MAPP) Partners.


Feedback

You can provide feedback by completing the Microsoft Help and Support form, 
Customer Service Contact Us.


Support

Customers in the United States and Canada can receive technical support from 
Security Support. For more information about available support options, see 
Microsoft Help and Support.

International customers can receive support from their local Microsoft 
subsidiaries. For more information about how to contact Microsoft for 
international support issues, visit International Support.

Microsoft TechNet Security provides additional information about security in 
Microsoft products.


Disclaimer

The information provided in this advisory is provided "as is" without warranty 
of any kind. Microsoft disclaims all warranties, either express or implied, 
including the warranties of merchantability and fitness for a particular purpose. 
In no event shall Microsoft Corporation or its suppliers be liable for any 
damages whatsoever including direct, indirect, incidental, consequential, loss 
of business profits or special damages, even if Microsoft Corporation or its 
suppliers have been advised of the possibility of such damages. Some states do 
not allow the exclusion or limitation of liability for consequential or 
incidental damages so the foregoing limitation may not apply.


Revisions

    V1.0 (June 3, 2012): Advisory published.

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===========================================================================
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Internet Email: auscert@auscert.org.au
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