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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2146 Microsoft Security Bulletin MS16-112: Important - Security Update for Windows Lock Screen (3178469) 14 September 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Windows Publisher: Microsoft Operating System: Windows Impact/Access: Increased Privileges -- Console/Physical Resolution: Patch/Upgrade CVE Names: CVE-2016-3302 Original Bulletin: https://technet.microsoft.com/en-us/library/security/MS16-112 - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS16-112: Important - Security Update for Windows Lock Screen (3178469) Executive Summary This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if Windows improperly allows web content to load from the Windows lock screen. This security update is rated Important for all supported editions of Windows 8.1, Windows RT 8.1, Windows Server 2012 R2, and Windows 10. Affected Software Windows 8.1 Windows Server 2012 R2 Windows RT 8.1 Windows 10 Windows Server 2012 R2 (Server Core installation) Vulnerability Information Windows Lock Screen Elevation of Privilege Vulnerability - CVE-2016-3302 An elevation of privilege vulnerability exists when Windows improperly allows web content to load from the Windows lock screen. To exploit the vulnerability, an attacker with physical access to a users computer could either connect to a maliciously configured WiFi hotspot or insert a mobile broadband adaptor in the users computer. An attacker who successfully exploited the vulnerability could potentially execute code on a user's locked computer. However, the attacker would have no way to either force a user to connect to the hotspot or control the default browser selection on the users computer. The security update addresses the vulnerability by correcting the behavior of the Windows lock screen to prevent unintended web content from loading. 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 Windows Lock Screen Elevation of Privilege Vulnerability CVE-2016-3302 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 iQIVAwUBV9iNoIx+lLeg9Ub1AQjSHQ/8Cf+8rGiP5T4HZQFIG5nCh5G/Y2TSDeIF BQNLYdCd22Pn62JzCkGlvvnacbxyfHrI9394AbOw4tFpzKzJwU8fT3Qc9Ma7V9sp 0/RxPYcHoRtQz96g7guJtHhl+uvGe4SmrZsZWyLU+v5VpxxQQW/xun276g4RmTEq T05kO5+CVcRb0TjdAOmo3Isz0teOAr72m1uPJ3DL8F+qcBSziU/KQp76+f0uJN8e 70CtuEIY1W86KAfwXo5Sm61szIvsoAIeFIluCD6gB4AEsllGav4jlWWscm3M9Xuu G04dO2rrXRU0MGCQU3Yo9hhZ2HWAqvbw6eYLIzBhZwnZtWU0e6sw7LZRM4Jx1qJl CDW3P/ysQwb5uzg2g4oYQemjQdHtX6lrEUnEoTFzqBCoaj5bdellE1k+cfytJxup TMnhisikHkLXCu2GY6tG3UXreev2DrZNdY0UMFPsPav2L8jtzxn0lh3UJCY887A2 bFR0SIqmpPxoGyRyQralTpdNeYAzLObXl68ZDBqpQQAzKW5a9+o8C1/d6lLXARvm iXLaWgpoImJFPo8HZs7h+FaIkVO8uzxF5k8J4Sk8clyiC8eXcVf+CS4ykffgm+0l VLmF2GblU32gt5U9yIUYShkrU0Ojnw52T1DauYU5NC+If2IpeAnWiUs4h1hlFPYl vH5133PYVyU= =bPrl -----END PGP SIGNATURE-----