Microsoft Security Bulletin MS16-107 - Critical

Security Update for Microsoft Office (3185852)

Published: September 13, 2016 | Updated: September 22, 2016

Version: 2.0

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, see the Affected Software and Vulnerability Severity Ratings section.

The security update addresses the vulnerabilities by correcting how:

  • Microsoft Office saves documents.
  • Click-to-Run components handle memory addresses.
  • affected versions of Office and Office components handle objects in memory.
  • Microsoft Outlook determines the end of MIME messages.

For more information about the vulnerabilities, see the Vulnerability Information section.

For more information about this update, see Microsoft Knowledge Base Article 3185852.

Affected Software and Vulnerability Severity Ratings

The following software versions or editions are affected. Versions or editions that are not listed are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see Microsoft Support Lifecycle.

The following severity ratings assume the potential maximum impact of the vulnerability. For information regarding the likelihood, within 30 days of this security bulletin's release, of the exploitability of the vulnerability in relation to its severity rating and security impact, please see the Exploitability Index in the September bulletin summary.

Microsoft Office Software (Table 1 of 2)

Affected Software Microsoft APP-V ASLR Bypass – CVE-2016-0137 Microsoft Information Disclosure Vulnerability – CVE-2016-0141 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3357 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3358 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3359 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3360 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3361 Updates Replaced*
Microsoft Office 2007
Microsoft Office 2007 Service Pack 3
(3118300)
Not applicable Important Information Disclosure Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3114893 in MS16-099
Microsoft Excel 2007 Service Pack 3
(3115459)
Not applicable Not applicable Not applicable Important Remote Code Execution Important Remote Code Execution Not applicable Not applicable 3115306 in MS16-088
Microsoft Outlook 2007
(3118303)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3114981 in MS16-099
Microsoft PowerPoint 2007 Service Pack 3
(3114744)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable 3114429 in MS16-004
Microsoft Office 2010
Microsoft Office 2010 Service Pack 2 (32-bit editions)
(3118309)
Not applicable Important Information Disclosure Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3114869 in MS16-099
Microsoft Office 2010 Service Pack 2 (64-bit editions)
(3118309)
Not applicable Important Information Disclosure Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3114869 in MS16-099
Microsoft Office 2010 Service Pack 2 (32-bit editions)
(2553432)
Not applicable Not applicable Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable None
Microsoft Office 2010 Service Pack 2 (64-bit editions)
(2553432)
Not applicable Not applicable Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable None
Microsoft Excel 2010 Service Pack 2 (32-bit editions)
(3118316)
Not applicable Not applicable Not applicable Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution 3115322 in MS16-088
Microsoft Excel 2010 Service Pack 2 (64-bit editions)
(3118316)
Not applicable Not applicable Not applicable Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution 3115322 in MS16-088
Microsoft Outlook 2010 Service Pack 2 (32-bit editions)
(3118313)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115474 in MS16-099
Microsoft Outlook 2010 Service Pack 2 (64-bit editions)
(3118313)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115474 in MS16-099
Microsoft PowerPoint 2010 Service Pack 2 (32-bit editions)
(3115467)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable 3115118 in MS16-088
Microsoft PowerPoint 2010 Service Pack 2 (64-bit editions)
(3115467)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable 3115118 in MS16-088
Microsoft Office 2013
Microsoft Office 2013 Service Pack 1 (32-bit editions)[2] Important Security Feature Bypass Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Office 2013 Service Pack 1 (64-bit editions)[2] Important Security Feature Bypass Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Office 2013 Service Pack 1 (32-bit editions)
(3118268)
Not applicable Important Information Disclosure Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3115427 in MS16-099
Microsoft Office 2013 Service Pack 1 (64-bit editions)
(3118268)
Not applicable Important Information Disclosure Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3115427 in MS16-099
Microsoft Excel 2013 Service Pack 1 (32-bit editions)
(3118284)
Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable 3115262 in MS16-088
Microsoft Excel 2013 Service Pack 1 (64-bit editions)
(3118284)
Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable 3115262 in MS16-088
Microsoft Outlook 2013 Service Pack 1 (32-bit editions)
(3118280)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115452 in MS16-099
Microsoft Outlook 2013 Service Pack 1 (64-bit editions)
(3118280)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115452 in MS16-099
Microsoft PowerPoint 2013 Service Pack 1 (32-bit editions)
(3115487)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable 3115254 in MS16-088
Microsoft PowerPoint 2013 Service Pack 1 (64-bit editions)
(3115487)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable 3115254 in MS16-088
Microsoft Office 2013 RT
Microsoft Office 2013 RT Service Pack 1[1] (3118268) Not applicable Not applicable Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3115427 in MS16-099
Microsoft Excel 2013 RT Service Pack 1[1] (3118284) Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable 3115262 in MS16-088
Microsoft Outlook 2013 RT Service Pack 1[1] (3118280) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115452 in MS16-099
Microsoft PowerPoint RT 2013 Service Pack 1[1] (3115487) Not applicable Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable 3115254 in MS16-088
Microsoft Office 2016
Microsoft Office 2016 (32-bit edition)
(3118292)
Not applicable Important Information Disclosure Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3115415 in MS16-099
Microsoft Office 2016 (64-bit edition)
(3118292)
Not applicable Important Information Disclosure Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3115415 in MS16-099
Microsoft Excel 2016 (32-bit edition)
(3118290)
Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable 3115272 in MS16-088
Microsoft Excel 2016 (64-bit edition)
(3118290)
Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable 3115272 in MS16-088
Microsoft Outlook 2016 (32-bit edition)
(3118293)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Outlook 2016 (64-bit edition)
(3118293)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Visio 2016 (32-bit editions)[2] Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Visio 2016 (64-bit editions)[2] Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Office for Mac 2011
Microsoft Word for Mac 2011[2] (3186805) Not applicable Not applicable Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3179162 in MS16-099
Microsoft Office 2016 for Mac
Microsoft Excel 2016 for Mac[2] (3186807) Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable None
Microsoft PowerPoint 2016 for Mac[2] (3186807) Not applicable Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable None
Microsoft Word 2016 for Mac[2] (3186807) Not applicable Not applicable Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3179163 in MS16-099
Microsoft Outlook 2016 for Mac[2] (3186807) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Other Office Software
Microsoft Office Compatibility Pack Service Pack 3
(2597974)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable 2596843 in MS11-094
Microsoft Office Compatibility Pack Service Pack 3
(3115462)
Not applicable Not applicable Not applicable Important Remote Code Execution Important Remote Code Execution Not applicable Not applicable 3115308 in MS16-088
Microsoft Excel Viewer
(3115463)
Not applicable Not applicable Not applicable Important Remote Code Execution Important Remote Code Execution Not applicable Not applicable 3115114 in MS16-088
Microsoft PowerPoint Viewer
(3054969)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable 3054840 in MS15-046
Microsoft Word Viewer
(3118297)
Not applicable Not applicable Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3115479 in MS16-099

[1]This update is available via Windows Update.

[2]This reference is for the Click-to-Run (C2R) version only. For more information and the current Click-to-Run version number, see Update Office 2013 or Office 365.

[3]As of September 22, 2016, the 3186805 update is available for Microsoft Office for Mac 2011, and the 3186807 update is available for Microsoft Office 2016 for Mac. For more information, see Microsoft Knowledge Base Article 3186805 and Microsoft Knowledge Base Article 3186807.

*The Updates Replaced column shows only the latest update in a chain of superseded updates. For a comprehensive list of updates replaced, go to the Microsoft Update Catalog, search for the update number, and then view update details (updates replaced information is on the Package Details tab).

Microsoft Office Software (Table 2 of 2)

Affected Software Microsoft Office Memory Corruption Vulnerability – CVE-2016-3362 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3363 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3364 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3365 Microsoft Office Spoofing Vulnerability – CVE-2016-3366 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3381 Updates Replaced*
Microsoft Office 2007
Microsoft Office 2007 Service Pack 3
(3118300)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3114893 in MS16-099
Microsoft Excel 2007 Service Pack 3
(3115459)
Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution 3115306 in MS16-088
Microsoft Outlook 2007
(3118303)
Not applicable Not applicable Not applicable Not applicable Important Spoofing Not applicable 3114981 in MS16-099
Microsoft PowerPoint 2007 Service Pack 3
(3114744)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3114429 in MS16-004
Microsoft Office 2010
Microsoft Office 2010 Service Pack 2 (32-bit editions)
(3118309)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3114869 in MS16-099
Microsoft Office 2010 Service Pack 2 (64-bit editions)
(3118309)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3114869 in MS16-099
Microsoft Office 2010 Service Pack 2 (32-bit editions)
(2553432)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Office 2010 Service Pack 2 (64-bit editions)
(2553432)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Excel 2010 Service Pack 2 (32-bit editions)
(3118316)
Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution 3115322 in MS16-088
Microsoft Excel 2010 Service Pack 2 (64-bit editions)
(3118316)
Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution 3115322 in MS16-088
Microsoft Outlook 2010 Service Pack 2 (32-bit editions)
(3118313)
Not applicable Not applicable Not applicable Not applicable Important Spoofing Not applicable 3115474 in MS16-099
Microsoft Outlook 2010 Service Pack 2 (64-bit editions)
(3118313)
Not applicable Not applicable Not applicable Not applicable Important Spoofing Not applicable 3115474 in MS16-099
Microsoft PowerPoint 2010 Service Pack 2 (32-bit editions)
(3115467)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115118 in MS16-088
Microsoft PowerPoint 2010 Service Pack 2 (64-bit editions)
(3115467)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115118 in MS16-088
Microsoft Office 2013
Microsoft Office 2013 Service Pack 1 (32-bit editions)[2] Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Office 2013 Service Pack 1 (64-bit editions)[2] Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Office 2013 Service Pack 1 (32-bit editions)
(3118268)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115427 in MS16-099
Microsoft Office 2013 Service Pack 1 (64-bit editions)
(3118268)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115427 in MS16-099
Microsoft Excel 2013 Service Pack 1 (32-bit editions)
(3118284)
Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution 3115262 in MS16-088
Microsoft Excel 2013 Service Pack 1 (64-bit editions)
(3118284)
Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution 3115262 in MS16-088
Microsoft Outlook 2013 Service Pack 1 (32-bit editions)
(3118280)
Not applicable Not applicable Not applicable Not applicable Important Spoofing Not applicable 3115452 in MS16-099
Microsoft Outlook 2013 Service Pack 1 (64-bit editions)
(3118280)
Not applicable Not applicable Not applicable Not applicable Important Spoofing Not applicable 3115452 in MS16-099
Microsoft PowerPoint 2013 Service Pack 1 (32-bit editions)
(3115487)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115254 in MS16-088
Microsoft PowerPoint 2013 Service Pack 1 (64-bit editions)
(3115487)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115254 in MS16-088
Microsoft Office 2013 RT
Microsoft Office 2013 RT Service Pack 1[1] (3118268) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115427 in MS16-099
Microsoft Excel 2013 RT Service Pack 1[1] (3118284) Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution 3115262 in MS16-088
Microsoft Outlook 2013 RT Service Pack 1[1] (3118280) Not applicable Not applicable Not applicable Not applicable Important Spoofing Not applicable 3115452 in MS16-099
Microsoft PowerPoint RT 2013 Service Pack 1[1] (3115487) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115254 in MS16-088
Microsoft Office 2016
Microsoft Office 2016 (32-bit edition)
(3118292)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115415 in MS16-099
Microsoft Office 2016 (64-bit edition)
(3118292)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115415 in MS16-099
Microsoft Excel 2016 (32-bit edition)
(3118290)
Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution 3115272 in MS16-088
Microsoft Excel 2016 (64-bit edition)
(3118290)
Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution 3115272 in MS16-088
Microsoft Outlook 2016 (32-bit edition)
(3118293)
Not applicable Not applicable Not applicable Not applicable Important Spoofing Not applicable None
Microsoft Outlook 2016 (64-bit edition)
(3118293)
Not applicable Not applicable Not applicable Not applicable Important Spoofing Not applicable None
Microsoft Visio 2016 (32-bit editions)[2] Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable None
Microsoft Visio 2016 (64-bit editions)[2] Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable None
Microsoft Office for Mac 2011
Microsoft Word for Mac 2011[2] (3186805) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3179162 in MS16-099
Microsoft Office 2016 for Mac
Microsoft Excel 2016 for Mac[2] (3186807) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft PowerPoint 2016 for Mac[2] (3186807) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None
Microsoft Word 2016 for Mac[2] (3186807) Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3179163 in MS16-099
Microsoft Outlook 2016 for Mac[2] (3186807) Not applicable Not applicable Not applicable Not applicable Important Spoofing Not applicable None
Other Office Software
Microsoft Office Compatibility Pack Service Pack 3
(2597974)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 2596843 in MS11-094
Microsoft Office Compatibility Pack Service Pack 3
(3115462)
Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution 3115308 in MS16-088
Microsoft Excel Viewer
(3115463)
Important Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution 3115114 in MS16-088
Microsoft PowerPoint Viewer
(3054969)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3054840 in MS15-046
Microsoft Word Viewer
(3118297)
Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 3115479 in MS16-099

[1]This update is available via Windows Update.

[2]This reference is for the Click-to-Run (C2R) version only. For more information and the current Click-to-Run version number, see Update Office 2013 or Office 365.

[3]As of September 22, 2016, the 3186805 update is available for Microsoft Office for Mac 2011, and the 3186807 update is available for Microsoft Office 2016 for Mac. For more information, see Microsoft Knowledge Base Article 3186805 and Microsoft Knowledge Base Article 3186807.

*The Updates Replaced column shows only the latest update in a chain of superseded updates. For a comprehensive list of updates replaced, go to the Microsoft Update Catalog, search for the update number, and then view update details (updates replaced information is on the Package Details tab).

Microsoft Office Services and Web Apps

Affected Software Microsoft Office Memory Corruption Vulnerability – CVE-2016-3357 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3358 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3360 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3362 Microsoft Office Memory Corruption Vulnerability – CVE-2016-3365 Updates Replaced*
Microsoft SharePoint Server 2007
Excel Services on Microsoft SharePoint Server 2007 Service Pack 3 (32-bit editions)
(3115112)
Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution 3114897 in MS16-042
Excel Services on Microsoft SharePoint Server 2007 Service Pack 3 (64-bit editions)
(3115112)
Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution 3114897 in MS16-042
Microsoft SharePoint Server 2010
Excel Services on Microsoft SharePoint Server 2010 Service Pack 2
(3115119)
Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution 3114871 in MS16-042
Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2
(3115466)
Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3115312 in MS16-088
Microsoft SharePoint Server 2013
Microsoft SharePoint Server 2013 Service Pack 1
(3054862)
Critical Remote Code Execution Not applicable Important Remote Code Execution Not applicable Not applicable 3039736 in MS15-046
Excel Automation Services on Microsoft SharePoint Server 2013 Service Pack 1
(3115169)
Critical Remote Code Execution Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution 3114335 in MS16-015
Word Automation Services on Microsoft SharePoint Server 2013 Service Pack 1
(3115443)
Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable 3115285 in MS16-088
Microsoft Office Web Apps 2010
Microsoft Office Web Apps 2010 Service Pack 2
(3115472)
Critical Remote Code Execution Not applicable Important Remote Code Execution Not applicable Not applicable 3115318 in MS16-088
Microsoft Office Web Apps 2013
Microsoft Office Web Apps Server 2013 Service Pack 1
(3118270)
Critical Remote Code Execution Not applicable Important Remote Code Execution Not applicable Not applicable 3115289 in MS16-088
Office Online Server
Office Online Server
(3118299)
Not applicable Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution 3115386 in MS16-088

*The Updates Replaced column shows only the latest update in a chain of superseded updates. For a comprehensive list of updates replaced, go to the Microsoft Update Catalog, search for the update KB number, and then view update details (updates replaced information is on the Package Details tab).

Update FAQ

I am being offered this update for software that is not specifically indicated as being affected in the Affected Software and Vulnerability Severity Ratings table. Why am I being offered this update?
When updates address vulnerable code that exists in a component that is shared between multiple Microsoft Office products or shared between multiple versions of the same Microsoft Office product, the update is considered to be applicable to all supported products and versions that contain the vulnerable component.

For example, when an update applies to Microsoft Office 2007 products, only Microsoft Office 2007 may be specifically listed in the Affected Software table. However, the update could apply to Microsoft Word 2007, Microsoft Excel 2007, Microsoft Visio 2007, Microsoft Compatibility Pack, Microsoft Excel Viewer, or any other Microsoft Office 2007 product that is not specifically listed in the Affected Software table. Furthermore, when an update applies to Microsoft Office 2010 products, only Microsoft Office 2010 may be specifically listed in the Affected Software table. However, the update could apply to Microsoft Word 2010, Microsoft Excel 2010, Microsoft Visio 2010, Microsoft Visio Viewer, or any other Microsoft Office 2010 product that is not specifically listed in the Affected Software table.

For more information on this behavior and recommended actions, see Microsoft Knowledge Base Article 830335. For a list of Microsoft Office products that an update may apply to, refer to the Microsoft Knowledge Base Article associated with the specific update.

Vulnerability Information

Microsoft APP-V ASLR Bypass – CVE-2016-0137

An information disclosure vulnerability exists in the way that the Click-to-Run (C2R) components handle objects in memory, which could lead to an Address Space Layout Randomization (ASLR) bypass.

An attacker who successfully exploited the information disclosure vulnerability could use the obtained information to bypass the ASLR security mechanism in Windows, which helps protect users from a broad class of vulnerabilities. The ASLR bypass by itself does not allow arbitrary code execution; however, an attacker could use the ASLR bypass in conjunction with another vulnerability, such as a remote code execution vulnerability, that could leverage the ASLR bypass to run arbitrary code.

To exploit the ASLR bypass, an attacker would have to log on to an affected system and run a specially crafted application. Workstations are primarily vulnerable to the potential ASLR bypass.

The security update addresses the ASLR bypass by correcting how C2R components handle memory addresses.

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 APP-V ASLR Bypass CVE-2016-0137 No No

Mitigating Factors

Microsoft has not identified any mitigating factors for this bypass condition.

Workarounds

Microsoft has not identified any workarounds for this bypass condition.

Microsoft Information Disclosure Vulnerability – CVE-2016-0141

An information disclosure vulnerability exists when Visual Basic macros in Office improperly exports a user’s private key from the certificate store while saving a document. An attacker who successfully exploited the vulnerability could potentially gain access to the user’s private key.

The attacker would have to use another vulnerability, or employ a social engineering technique, to obtain the saved document from the user.

The security update addresses the vulnerability by correcting how Microsoft Office saves documents.

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 Information Disclosure Vulnerability CVE-2016-0141 No No

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

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-2016-3357.

The security update addresses the vulnerabilities by correcting how Microsoft 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-2016-3357 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-3358 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-3359 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-3360 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-3361 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-3362 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-3363 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-3364 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-3365 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-3381 No No

Mitigating Factors

Microsoft has not identified any mitigating factors for these vulnerabilities.

Workarounds

Microsoft has not identified any workarounds for these vulnerabilities.

Microsoft Office Spoofing Vulnerability – CVE-2016-3366

A spoofing vulnerability exists when Microsoft Outlook does not strictly adhere to RFC2046, and improperly identifies the end of a MIME attachment. An improper MIME attachment ending may cause antivirus or antispam scanning to not work as intended.

To exploit the vulnerability, an attacker could send a specially crafted email attachment to a user in an attempt to launch a social engineering attack, such as phishing.

The security update addresses the vulnerability by correcting how Outlook determines the end of MIME messages.

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 Spoofing Vulnerability CVE-2016-3366 No No

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

Security Update Deployment

For Security Update Deployment information, see the Microsoft Knowledge Base article referenced here in the Executive Summary.

Acknowledgments

Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See Acknowledgments for more information.

Disclaimer

The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Revisions

  • V1.0 (September 13, 2016): Bulletin published.
  • V2.0 (September 22, 2016): Bulletin revised to announce the availability of the 14.6.8 update for Microsoft Office for Mac 2011 (3186805) and the 15.25 update for Microsoft Office 2016 for Mac (3186807). Customers running affected Mac software should install the appropriate update for their product to be protected from the vulnerabilities discussed in this bulletin. Customers running other Microsoft Office software do not need to take any action. See Microsoft Knowledge Base Article 3186805 and Microsoft Knowledge Base Article 3186807 for more information and download links.

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