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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.0886.2 Microsoft Security Advisory (2607712) Fraudulent Digital Certificates Could Allow Spoofing 30 August 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Windows Publisher: Microsoft Operating System: Windows XP Windows Server 2003 Windows Vista Windows Server 2008 Windows 7 Impact/Access: Provide Misleading Information -- Remote with User Interaction Resolution: Mitigation Original Bulletin: http://www.microsoft.com/technet/security/advisory/260771.mspx Revision History: August 30 2011: Revised to correct erroneous advisory number August 30 2011: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Advisory (2607712) Fraudulent Digital Certificates Could Allow Spoofing Published: August 29, 2011 Version: 2.0 General Information Executive Summary Microsoft is aware of at least one fraudulent digital certificate issued by DigiNotar, a certification authority present in the Trusted Root Certification Authorities Store, on all supported releases of Microsoft Windows. Although this is not a vulnerability in a Microsoft product, Microsoft is taking action to protect customers. Microsoft has been able to confirm that one digital certificate affects all subdomains of google.com and may 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. Microsoft is continuing to investigate how many more certificates have been fraudulently issued. As a precautionary measure, Microsoft has removed the DigiNotar root certificate from the Microsoft Certificate Trust List. All supported editions of Windows Vista, Windows 7, Windows Server 2008, and Windows Server 2008 R2 use the Microsoft Certificate Trust List to validate the trust of a certification authority. Users of these operating systems will be presented with an invalid certificate error when they browse to a Web site or try to install programs signed by the DigiNotar root certificate. In those cases users should follow the instructions in the message. Microsoft will release a future update to address this issue for all supported editions of Windows XP and Windows Server 2003. Microsoft is continuing to investigate this issue and may release future updates to help protect customers. Affected Software 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. Revisions V1.0 (August 29, 2011): Advisory published. V2.0 (August 29, 2011): Revised to correct erroneous advisory number. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBTlxvTu4yVqjM2NGpAQL70BAAly5s68446PB4I0qu3rgQ4crtChWXQq5V fU9B2Wxe9gbZ8XTmxDjbqpKTHqqqclbMSUUtAYVgEVbJ/Zy06LfkNx52XRwD9rzp YQSnoTy37bc97K1MBHLY4oJChFL7cUOidPd7QTq7kYEFE+AT0fMdF4Fgd58j8rS8 mq+EB2cEzW29ZvSkvq+CIlKlXaYW3OCgnVoZGAuuKVruW9EBfOgjgmIj9UZ46pkj Cxv5IWur0Uv0aGtfXcvYE1H95ODYbB3cQ6zC279JUdX0gBFC6uej7Kgy8byQEpQw /vfAEAIxZXgMvOyUQV9WLpykOqMUbYhpS53bUwJolqKDQiaU0/vGeNb5X6PMU4S1 s+T8LVgVUgupXV1nAICrVZVqytVYm9jAa3nznkXy6zFG+74naMDBOEDupnUaJB4w nagoSu8K9uVxpuBGgH8NCrHErYhJZjV65s+kEolUDwig1t63Z+KXiumKhnZjF7iM cHe1W3VtM7RDDqyuPoK+oz/pQxF5cDUlsEk7+8GT0/wMq5Ve5xUwV6ZyQOTR3YU/ ILyj3WgxEFkobfFNe5Y5dZZ7dUZJMpflKoU/juHhCCd4OLi2MYtvbyYqRp0QdzJv CB7SnHGgmcEVgHXuJ8DlCzucOjc2TNaaFTSu+44DgeF0jRokl3b2i884OCCwRXvq wdxbK+W85lM= =YrFw -----END PGP SIGNATURE-----