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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.1496 Microsoft Security Bulletin MS16-073 - Important: Security Update for Windows Kernel-Mode Drivers (3164028) 15 June 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Windows Publisher: Microsoft Operating System: Windows Impact/Access: Administrator Compromise -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2016-3232 CVE-2016-3221 CVE-2016-3218 Original Bulletin: https://technet.microsoft.com/en-us/library/security/MS16-073 - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS16-073 - Important: Security Update for Windows Kernel-Mode Drivers (3164028) Executive Summary This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application. This security update is rated Important for all supported releases of Microsoft Windows. For more information, see the Affected Software and Vulnerability Severity Ratings section. The security update addresses the vulnerabilities by correcting how the Windows kernel-mode driver handles objects in memory, and by correcting VPCI memory handling. Affected Software Operating System Windows Vista Windows Server 2008 Windows 7 Windows Server 2008 R2 Windows 8.1 Windows Server 2012 Windows Server 2012 R2 Windows RT 8.1 Windows 10 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 Service Pack 1 (Server Core installation) Windows Server 2012 (Server Core installation) Windows Server 2012 R2 (Server Core installation) Vulnerability Information Multiple Win32k Elevation of Privilege Vulnerabilities Multiple elevation of privilege vulnerabilities exist in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited the vulnerabilities could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit the vulnerabilities, an attacker would first have to log on to the target system. An attacker could then run a specially crafted application that could exploit the vulnerabilities and take control over an affected system. The update addresses the vulnerabilities by correcting how the Windows kernel-mode driver handles objects in memory. 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 Win32k Elevation of Privilege Vulnerability CVE-2016-3218 No No Win32k Elevation of Privilege Vulnerability CVE-2016-3221 No No Windows Virtual PCI Information Disclosure Vulnerability - CVE-2016-3232 An information disclosure vulnerability exists when the Windows Virtual PCI (VPCI) virtual service provider (VSP) fails to properly handle uninitialized memory. An attacker who successfully exploited this vulnerability could potentially disclose contents of memory to which they should not have access. To exploit the vulnerability, an attacker would first have to log on to the target system. An attacker could then run a specially crafted application that could exploit the vulnerability. The vulnerability would not allow an attacker to execute code or to elevate user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. The update addresses the vulnerability by correcting VPCI memory handling. 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 Virtual PCI Information Disclosure Vulnerability CVE-2016-3232 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. 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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 iQIVAwUBV2C7D4x+lLeg9Ub1AQgmrg//dMpgXCyq4zfN13Lm6puUdc8JaFmJ2Nzq 7uOJ6IdI8qAe9Cjt8V0J29hGJQarTdsINZRMvSeE4py/acP6NPzF9G4DYJYbdh5y MR/PiiKWj/MMB5WKpc3tBBSRQIQYcMeft9YFCP38jfUS3L0OSbpdoZJoSq5fqWlt WxqaLeZPwwHpr+xoXb/SqWPDWpzvU3oWFhnXz8MzYGnc/wnWOPB+jLYROI4IASZf aM16x0R0iHwktObnDD/GPG3N4AxsfKl8KSXxDMCWtgyt3oAAN9quJtlAwBRLS2xQ Go4Y4aYiWytXRY/yx1G4uR0NRCAdygUPM7D3rSsusTre9Nw2hSMFrwUR2ollyno1 8o0mKaXO5zmfkUO+k1qi+5lTHi4BiV1T6eGlDZP8RS73O66lEZGjJGkST2AvhaTe RJIcktkEAAzxkQCioI/TZpebT8X9RaTv+Ho3mG9zENMBtWap1gKNoGkjuQnbNRds Gds+FIsDGyp3LtFpIaeh8i4NA60kL9c0wwIXEYs+QtSOUaWvnZ/EHcpJZfXrPwLT +CdJ7QUXzPYInoSNSEtesvnKamF6FkjtLtt+NdJY3CaiQjeUZOX2QaCUFK2ByM3E MfGcBsT0AgpUgLl540n3RND7WnQwl8rb1a7HvcF9xPtE0NxGV7kU/3FPJW40pwMq k4t95EJGKMQ= =1TVV -----END PGP SIGNATURE-----