Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2678 Microsoft Security Bulletin MS16-140 - Important Security Update for Boot Manager (3193479) 9 November 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Windows Publisher: Microsoft Operating System: Windows 8.1 Windows Server 2012 Windows Server 2012 R2 Windows RT 8.1 Windows 10 Windows Server 2016 Impact/Access: Reduced Security -- Unknown/Unspecified Resolution: Patch/Upgrade CVE Names: CVE-2016-7247 Original Bulletin: https://technet.microsoft.com/en-us/library/security/MS16-140 - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS16-140 - Important Security Update for Boot Manager (3193479) Published: November 8, 2016 Version: 1.0 Executive Summary This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow security feature bypass if a physically-present attacker installs an affected boot policy. This security update is rated Important for all supported editions of Windows 8.1, Windows Server 2012, Windows Server 2012 R2, Windows RT 8.1, Windows 10, and Windows Server 2016. Affected Software Windows 8.1 Windows Server 2012 and Windows Server 2012 R2 Windows RT 8.1 Windows 10 Windows Server 2016 Vulnerability Information Secure Boot Component Vulnerability – CVE-2016-7247 A security feature bypass vulnerability exists when Windows Secure Boot improperly loads a boot policy that is affected by the vulnerability. An attacker who successfully exploited this vulnerability could disable code integrity checks, allowing test-signed executables and drivers to be loaded onto a target device. The security update addresses the vulnerability by revoking affected boot policies in the firmware. The revocation protection level depends upon platform firmware. The Windows event channel Microsoft-Windows-Kernel-Boot may be used to determine the protection level provided. Note that an additional reboot is needed to view the event: Windows versions prior to Windows 10 do not log the event by default. You must enable “analytic†logging for this channel prior to installation of the patch. Windows versions 10 and higher log the event by default. Event ID 155 indicates baseline protection. Event ID 154 indicates enhanced protection. For systems that provide baseline protection, firmware updates from your OEM may be available which upgrade systems to enhanced protection. The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited Secure Boot Component Vulnerability CVE-2016-7247 No No - --------------------------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 iQIVAwUBWCJyB4x+lLeg9Ub1AQhFBw//V3WarTtivoj6a2gDpQZnxmoVcna6xqTb joVzEdnOj3ZCqGwipYmj8STZSxA2/F/VP48cnzy83Y1uSBDkwAj+uXFkoDn+uf/H s+ZIzQ7YOTcyOboKtf/7g4BAYuyuRir/9gaTqSjKtXpv4I2hqXf0B8QySKEpZsX3 6HjTB+NYTeIhh96AOnVQJNjOuwb9NxLN8H7wNShC/OMkIncWqXxH3Ro+V0a6JGbL 5Yo8d3/7ewLoP8IVMcTWKFXDpoKgZTxWMoGBQMvDcoUXeRQZJGWnMXlLmznIp582 iUSRYnXUDvsO6JQ/s1FdjAO9EmiJq6x7/fCzqnrWKD/G9zbpY5lBeRQqe43ZU6AL K/Enp/xTIDOt4SM0eneod/fhluVsLgsO4UA6xeZ6RrNJS58gVCX4W7sOf53SQgag dRClV6dGRu3XOWy4Sfv7ZEL6scm/17nJE8+dAoJpbW5jhANNQJwiL8UFOAIWRYS0 0zUGFcLdeARgo1hkwB9Ro+n+zYjzaLXfs9y1054kxImZCbj2smMAeydjLH8vgQAj 5yKZiYfM0yiwXOJJ+6UH5FuTCCZ4Zo+tLKCSgz1kgmwhgifRcYW3KDIPiyFOOtJM HIfeUrtH7WNFUzvEIPnXBcBaj/jJQJi6mNrBwUjoZ8oHHtkfOuMw0StUWk49UP7S ckVLIo8rncE= =B8MS -----END PGP SIGNATURE-----