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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.0923 Microsoft Security Bulletin MS16-042 - Security Update for Microsoft Office - Critical (3148775) 13 April 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Office Microsoft SharePoint Publisher: Microsoft Operating System: Windows OS X Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2016-0139 CVE-2016-0136 CVE-2016-0127 CVE-2016-0122 Original Bulletin: https://technet.microsoft.com/en-us/library/security/MS16-042 - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS16-042 - Security Update for Microsoft Office - Critical (3148775) Document Metadata Bulletin Number: MS16-042 Bulletin Title: Security Update for Microsoft Office Severity: Critical KB Article: 3148775 Version: 1.0 Published Date: April 12, 2016 Executive Summary This security update resolves vulnerabilities in Microsoft Office. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted Microsoft Office file. An attacker who successfully exploited the vulnerabilities could run arbitrary code in the context of the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights. Affected Software Microsoft Office 2007 Microsoft Office 2010 Microsoft Office 2013 Microsoft Office 2013 RT Microsoft Office 2016 Microsoft Office for Mac 2011 Microsoft Office 2016 for Mac Microsoft Office Compatibility Pack Service Pack 3 Microsoft Excel Viewer Microsoft Word Viewer Microsoft SharePoint Server 2007 Microsoft SharePoint Server 2010 Microsoft SharePoint Server 2013 Microsoft Office Web Apps 2010 Microsoft Office Web Apps 2013 Vulnerability Information Multiple Microsoft Office Memory Corruption Vulnerabilities Multiple remote code execution vulnerabilities exist in Microsoft Office software when the Office software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerabilities could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. Exploitation of the vulnerabilities requires that a user open a specially crafted file with an affected version of Microsoft Office software. Note that where the severity is indicated as Critical in the Affected Software and Vulnerability Severity Ratings table, the Preview Pane is an attack vector for CVE-2016-0127. In an email attack scenario an attacker could exploit the vulnerabilities by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file that is designed to exploit the vulnerabilities. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince them to open the specially crafted file. The security update addresses the vulnerabilities by correcting how Office handles objects in memory. The following tables contain links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited Microsoft Office Memory Corruption Vulnerability CVE-2016-0122 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-0127 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-0136 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-0139 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. 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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 iQIVAwUBVw1v536ZAP0PgtI9AQJacBAAge2yqm6kR8X7h8Iyqy2NdARlXhYyIxbG VYv2kMwRLZGyacjjF1bQZe/d8mTijSFbgwzwqY1/+3Ui/YYViGt4XD8qpsJG3k8l QhaEgcE+t8mVVN4Lu97x5uHDhEPL0cS1UMAQbzMQcYmreLQBZhHsnqiSDYBnLbNB 15q9iBvCw7abO+RWkLnofE3h2F6klJV+gnuf0AMrjhbfWtV/4Y8wB21b6ae+qQv5 dToXKYQcgy9Srww5DHf+lR6lbh0YIHNOr/JvfySjEXvsuV5etBmorTUFFu8np/J0 1/1sYtuauDQdCO9CWD1GW6hmQFuCphao86i0X7UjNaiTpd32xSNvqgHs4CVhjIIB 1pqYoi/bsSRAMvfAJwRj3YcCKFG89B9r1aJ1GcvnHfTIr9xGdeSv1QtyejUscntS bYJyYWOFBP7WpRp71/TrMLkpo+R/c17w8xyGFEAuRyOJXk1Kz4dfRykV04taadIY Y3zWx8l5mIvIH3hS2wuc8qDE7xg92mgVoj5//MbJpn8Wo0WWD+1spmioKaxPkum5 5azO7lg4HO/Uhy3NtLZvGEvD6NTHrn6QPMWD2QRa0LG3upZqAjLysOi8XKM3ouSS ayRJ2vKe0P0AmER0f955NYj7oJ74gMbghhfOWuWEl4HhBRa390FtPCXjArB9KHVU OC67FGpwx08= =5aNL -----END PGP SIGNATURE-----