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AUSCERT External Security Bulletin Redistribution
ESB-2014.1186
Microsoft Security Advisory 2982792: Improperly Issued
Digital Certificates Could Allow Spoofing
18 July 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: Microsoft Windows
Publisher: Microsoft
Operating System: Windows
Impact/Access: Provide Misleading Information -- Remote with User Interaction
Resolution: Patch/Upgrade
Original Bulletin:
https://technet.microsoft.com/library/security/2982792
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Microsoft Security Advisory 2982792
Improperly Issued Digital Certificates Could Allow Spoofing
Published: July 10, 2014 | Updated: July 17, 2014
Version: 2.0
General Information
Executive Summary
Microsoft is aware of improperly issued SSL certificates that could be used in
attempts to spoof content, perform phishing attacks, or perform
man-in-the-middle attacks. The SSL certificates were improperly issued by the
National Informatics Centre (NIC), which operates subordinate CAs under root
CAs operated by the Government of India Controller of Certifying Authorities
(CCA), which are CAs present in the Trusted Root Certification Authorities
Store. This issue affects all supported releases of Microsoft Windows.
Microsoft is not currently aware of attacks related to this issue.
The subordinate CA has been misused to issue SSL certificates for multiple
sites, including Google web properties. These SSL certificates could be used
to spoof content, perform phishing attacks, or perform man-in-the-middle
attacks against web properties. The subordinate CAs may also have been used to
issue certificates for other, currently unknown sites, which could be subject
to similar attacks.
To help protect customers from potentially fraudulent use of this digital
certificate, Microsoft is updating the Certificate Trust list (CTL) for all
supported releases of Microsoft Windows to remove the trust of certificates
that are causing this issue.
Recommendation. An automatic updater of revoked certificates is included in
supported editions of Windows 8, Windows 8.1, Windows RT, Windows RT 8.1,
Windows Server 2012, and Windows Server 2012 R2, and for devices running
Windows Phone 8 or Windows Phone 8.1. For these operating systems or devices,
customers do not need to take any action because the CTL will be updated
automatically.
For systems running Windows Vista, Windows 7, Windows Server 2008, or Windows
Server 2008 R2 that are using the automatic updater of revoked certificates
(see Microsoft Knowledge Base Article 2677070 for details), customers do not
need to take any action because the CTL will be updated automatically.
For systems running Windows Vista, Windows 7, Windows Server 2008, or Windows
Server 2008 R2, and that do not have the automatic updater of revoked
certificates installed, this update is not available. To receive this update,
customers must install the automatic updater of revoked certificates (see
Microsoft Knowledge Base Article 2677070 for details). Customers in
disconnected environments and who are running Windows Vista, Windows 7,
Windows 8, Windows Server 2008, Windows Server 2008 R2, or Windows Server 2012
can install update 2813430 to receive this update (see Microsoft Knowledge
Base Article 2813430 for details).
For customers running Windows Server 2003, Microsoft recommends that the
2982792 update be applied immediately using update management software, by
checking for updates using the Microsoft Update service, or by downloading and
applying the update manually.
Affected Software
This advisory discusses the following software.
Affected Software
Operating System
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 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 RT
Windows RT 8.1
Windows Server 2012
Windows Server 2012 R2
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 2012 (Server Core installation)
Windows Server 2012 R2 (Server Core installation)
Affected Devices
Windows Phone 8
Windows Phone 8.1
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