Microsoft Security Advisory (2607712)
Fraudulent Digital Certificates Could Allow Spoofing
Published: | Updated:
Microsoft is aware of active attacks using at least one fraudulent digital certificate issued by DigiNotar, a certification authority present in the Trusted Root Certification Authorities Store. A fraudulent certificate could be used to spoof content, perform phishing attacks, or perform man-in-the-middle attacks against all Web browser users including users of Internet Explorer. While this is not a vulnerability in a Microsoft product, this issue affects all supported releases of Microsoft Windows.
Microsoft is continuing to investigate this issue. Based on preliminary investigation, Microsoft is providing a new update (KB2616676) on September 13, 2011 for all supported releases of Microsoft Windows that revokes the trust of the following DigiNotar root certificates by placing them into the Microsoft Untrusted Certificate Store:
- DigiNotar Root CA
- DigiNotar Root CA G2
- DigiNotar PKIoverheid CA Overheid
- DigiNotar PKIoverheid CA Organisatie - G2
- DigiNotar PKIoverheid CA Overheid en Bedrijven
- DigiNotar Root CA Issued by Entrust (2 certificates)
- DigiNotar Services 1024 CA Issued by Entrust
- DigiNotar Cyber CA Issued by GTE CyberTrust (3 certificates)
Recommendation. Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service. Please see the Suggested Actions section of this advisory for more information.
Known Issues. Microsoft Knowledge Base Article 2616676 documents the currently known issues that customers may experience when installing this update. The article also documents recommended solutions for these issues.
For more information about this issue, see the following references:
|Microsoft Knowledge Base Article||2616676|
This advisory discusses the following software and devices.
|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 and Windows 7 for 32-bit Systems Service Pack 1|
|Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1|
|Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1*|
|Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1|
*Server Core installation affected. This advisory applies to supported editions of Windows Server 2008 or Windows Server 2008 R2 as indicated, whether or not installed using the Server Core installation option. For more information on this installation option, see the TechNet articles, Managing a Server Core Installation and Servicing a Server Core Installation. Note that the Server Core installation option does not apply to certain editions of Windows Server 2008 and Windows Server 2008 R2; see Compare Server Core Installation Options.
|Windows Mobile 6.x|
|Windows Phone 7|
|Windows Phone 7.5|
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 Web sites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.
- You can provide feedback by completing the Microsoft Help and Support form, Customer Service Contact Us.
- 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.
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.
- V1.0 (August 29, 2011): Advisory published.
- V2.0 (August 29, 2011): Revised to correct erroneous advisory number.
- V3.0 (September 6, 2011): Revised to announce the release of an update that addresses this issue.
- V4.0 (September 13, 2011): Revised to announce the release of the KB2616676 update that addresses the issue described in this advisory.
- V4.1 (September 13, 2011): Revised to announce the availability of the KB2616676 update for the Windows Developer Preview release. See the Update FAQ in this advisory for more information.
- V5.0 (September 19, 2011): Revised to announce the rerelease of the KB2616676 update. See the Update FAQ in this advisory for more information.