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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.1716 Microsoft Security Bulletin MS16-088 - Critical 13 July 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Office Publisher: Microsoft Operating System: Windows OS X Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Reduced Security -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2016-3284 CVE-2016-3283 CVE-2016-3282 CVE-2016-3281 CVE-2016-3280 CVE-2016-3279 CVE-2016-3278 Original Bulletin: https://technet.microsoft.com/en-us/library/security/MS16-088 - --------------------------BEGIN INCLUDED TEXT-------------------- Microsoft Security Bulletin MS16-088 - Critical Security Update for Microsoft Office (3170008) Published: July 12, 2016 Version: 1.0 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. For more information about the vulnerabilities, see the Affected Software section. Microsoft Office Software Microsoft Office 2007 Microsoft Excel 2007 Service Pack 3 Microsoft Word 2007 Service Pack 3 Microsoft Office 2010 Microsoft Office 2010 Service Pack 2 (32-bit editions) Microsoft Office 2010 Service Pack 2 (64-bit editions) Microsoft Excel 2010 Service Pack 2 (32-bit editions) Microsoft Excel 2010 Service Pack 2 (64-bit editions) Microsoft Outlook 2010 Service Pack 2 (32-bit editions) Microsoft Outlook 2010 Service Pack 2 (64-bit editions) Microsoft PowerPoint 2010 Service Pack 2 (32-bit editions) Microsoft PowerPoint 2010 Service Pack 2 (64-bit editions) Microsoft Word 2010 Service Pack 2 (32-bit editions) Microsoft Word 2010 Service Pack 2 (64-bit editions) Microsoft Office 2013 Microsoft Excel 2013 Service Pack 1 (32-bit editions) Microsoft Excel 2013 Service Pack 1 (64-bit editions) Microsoft Outlook 2013 Service Pack 1 (32-bit editions) Microsoft Outlook 2013 Service Pack 1 (64-bit editions) Microsoft PowerPoint 2013 Service Pack 1 (32-bit editions) Microsoft PowerPoint 2013 Service Pack 1 (64-bit editions) Microsoft Word 2013 Service Pack 1 (32-bit editions) Microsoft Word 2013 Service Pack 1 (64-bit editions) Microsoft Office 2013 RT Microsoft Excel 2013 RT Service Pack 1 Microsoft Outlook 2013 RT Service Pack 1 Microsoft PowerPoint 2013 RT Service Pack 1[1] Microsoft Word 2013 RT Service Pack 1[1] Microsoft Office 2016 Microsoft Excel 2016 (32-bit edition) Microsoft Excel 2016 (64-bit edition) Microsoft Outlook 2016 (32-bit edition) Microsoft Outlook 2016 (64-bit edition) Microsoft Word 2016 (32-bit edition) Microsoft Word 2016 (64-bit edition) Microsoft Office for Mac 2011 Microsoft Excel for Mac 2011 Microsoft Word for Mac 2011 Microsoft Office 2016 for Mac Microsoft Excel 2016 for Mac Microsoft Word 2016 for Mac Other Office Software Microsoft Office Compatibility Pack Service Pack 3 Microsoft Excel Viewer Microsoft Word Viewer [1]This update is available via Windows Update. Microsoft Office Services and Web Apps Microsoft SharePoint Server 2010 Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2 Microsoft SharePoint Server 2013 Word Automation Services on Microsoft SharePoint Server 2013 Service Pack 1 Microsoft SharePoint Server 2016 Microsoft Office Web Apps 2010 Service Pack 2 Microsoft Office Web Apps Server 2013 Service Pack 1 Office Online Server 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. 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. 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-2016-3280, CVE-2016-3281, and CVE-2016-3282. The security update addresses the vulnerabilities by correcting how Office 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 Microsoft Office Memory Corruption Vulnerability CVE-2016-3278 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-3280 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-3281 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-3282 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-3283 No No Microsoft Office Memory Corruption Vulnerability CVE-2016-3284 No No Microsoft Office Security Feature Bypass Vulnerability CVE-2016-3279 A security feature bypass vulnerability exists in Microsoft Office software when the Office software improperly handles the parsing of file formats. The security feature bypass by itself does not allow arbitrary code execution. However, to successfully exploit the vulnerability, an attacker would have to use it in conjunction with another vulnerability, such as a remote code execution vulnerability, to take advantage of the security feature bypass vulnerability and run arbitrary code. To exploit the vulnerability would require that an attacker convince a user to open a specially crafted file with an affected version of Microsoft Office software. Vulnerability title CVE number Publicly disclosed Exploited Microsoft Security Feature Bypass Vulnerability CVE-2016-3279 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 iQIVAwUBV4WQ2Yx+lLeg9Ub1AQgHzQ//aZbFMTAFVVl+fEzU5Bd4+Ski14woXW36 CDJ9RxVxv4uiHKeKtDwcLsj6j1oF4+Dt6IcERma6zAd6QqQeVbjHVyQc6BHcARkw RljiHJ+wRtyhqbxBfhWmdoEnScXX1qP604fsQtsniERaexinXnpntZpjCGyBjtRq hlPyFKwNGHHvaRfrvIWxZxw9J7cWpzkeSRUWx07Lmw1pnMiq4gY3S8swYPG2zFN6 GFjR2naVLax2PhXHC5F4MTeZUWSRZ3wohxdpgxNVAaP9/xBP5i0NVfvEdaJ3FAPw JuRqDgwgpTYZ/2Y+BURJUfO5VC8jprTN8u0pBkHVqRM8qZ0HgCWzI7LtxLKXhwUA NxpXDYtnqSXLvT2muEo38HSyq8SE3j1EZPyxAX+zhLPl+ib6UaMQNmeaxfXg3KwW +DzT1Oi/qkmdbiCBXEMJbCwH/+RFEnvNBpEIPBcSizyuuZO10XaZoy4ra3uoH38Q JqfdLH+AMRhCIAV12v1dQHSt+dWc+DdbNLv366HqbpToTtqC46fcIXHMl68oNQ2T ocLHvEn5tIkqgOTi+4VsX8UNaLwbOHWgWHdslrZ1WU/7MBIKl9IW9f8WmFCHIaou Ie1eVVPlGi6Gu1uPWkvWIzkWT2CO9nF9FYq8agQQBXvgvanAvDY1Tl0rE6F4hB8T F2N9u5W/aLk= =1fJK -----END PGP SIGNATURE-----