Microsoft Security Bulletin MS16-148 - Critical

Security Update for Microsoft Office (3204068)

Published: December 13, 2016 | Updated: December 21, 2016

Version: 1.1

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 initializes variables.
  • Microsoft Office validates input
  • Microsoft Office rechecks registry values
  • Microsoft Office parses file formats
  • Affected versions of Office and Office components handle objects in memory
  • Microsoft Office for Mac Autoupdate Validates Packages.

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

For more information about this update, see Microsoft Knowledge Base Article 3204068.

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 December bulletin summary.

Note Please see the Security Update Guide for a new approach to consuming the security update information. You can customize your views and create affected software spreadsheets, as well as download data via a restful API. For more information, please see the Security Updates Guide FAQ. As a reminder, the Security Updates Guide will be replacing security bulletins as of February 2017. Please see our blog post, Furthering our commitment to security updates, for more details.

Microsoft Office Software (Table 1 of 2)

Affected Software Microsoft Office Security Feature Bypass Vulnerability – CVE-2016-7262 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7264 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7265 Microsoft Office Security Feature Bypass Vulnerability – CVE-2016-7266 Microsoft Office Security Feature Bypass Vulnerability – CVE-2016-7267 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7268 Updates Replaced*
Microsoft Office 2007
Microsoft Excel 2007 Service Pack 3
(3128019)
Important Remote Code Execution Important Information Disclosure Important Remote Code Execution Important Remote Code Execution Not applicable Not applicable 3118395 in MS16-133
Microsoft Word 2007 Service Pack 3
(3128025)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure 3127949 in MS16-133
Microsoft Office 2010
Microsoft Office 2010 Service Pack 2 (32-bit editions)
(3128032)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure 3127951 in MS16-133
Microsoft Office 2010 Service Pack 2 (64-bit editions)
(3128032)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure 3127951 in MS16-133
Microsoft Excel 2010 Service Pack 2 (32-bit editions)
(3128037)
Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution Moderate Security Feature Bypass Not applicable 3118390 in MS16-133
Microsoft Excel 2010 Service Pack 2 (64-bit editions)
(3128037)
Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution Moderate Security Feature Bypass Not applicable 3118390 in MS16-133
Microsoft Word 2010 Service Pack 2 (32-bit editions)
(3128034)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure 3127953 in MS16-133
Microsoft Word 2010 Service Pack 2 (64-bit editions)
(3128034)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure 3127953 in MS16-133
Microsoft Office 2013
Microsoft Excel 2013 Service Pack 1 (32-bit editions)
(3128008)
Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution Moderate Security Feature Bypass Not applicable 3127921 in MS16-133
Microsoft Excel 2013 Service Pack 1 (64-bit editions)
(3128008)
Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution Moderate Security Feature Bypass Not applicable 3127921 in MS16-133
Microsoft Office 2013 RT
Microsoft Excel 2013 RT Service Pack 1[1] (3128008) Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution Moderate Security Feature Bypass Not applicable 3127921 in MS16-133
Microsoft Office 2016
Microsoft Excel 2016 (32-bit edition)
(3128016)
Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution Moderate Security Feature Bypass Not applicable 3127904 in MS16-133
Microsoft Excel 2016 (64-bit edition)
(3128016)
Important Remote Code Execution Not applicable Important Remote Code Execution Important Remote Code Execution Moderate Security Feature Bypass Not applicable 3127904 in MS16-133
Other Office Software
Microsoft Office Compatibility Pack Service Pack 3
(3128022)
Important Remote Code Execution Important Information Disclosure Important Remote Code Execution Important Remote Code Execution Not applicable Not applicable 3127889 in MS16-133
Microsoft Office Compatibility Pack Service Pack 3
(3128024)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure 3127948 in MS16-133
Microsoft Excel Viewer
(3128023)
Important Remote Code Execution Important Information Disclosure Important Remote Code Execution Important Remote Code Execution Not applicable Not applicable 3127893 in MS16-133
Microsoft Word Viewer
(3128044)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure 3127962 in MS16-133

[1]This update is available via Windows Update.

*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 Uniscribe Remote Code Execution Vulnerability CVE-2016-7274 Microsoft Office OLE DLL Side Loading Vulnerability – CVE-2016-7275 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7276 Microsoft Office Memory Corruption Vulnerability – CVE-2016-7277 Microsoft Office Memory Corruption Vulnerability – CVE-2016-7289 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7290 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7291 Updates
Replaced\
*
Microsoft Office 2007
Microsoft Office 2007 Service Pack 3
(3128020)
Not applicable Not applicable Important Information Disclosure Not applicable Not applicable Not applicable Not applicable 3118396 in MS16-133
Microsoft Office 2007 Service Pack 3
(2883033)
Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 2878233 in MS14-036
Microsoft Word 2007 Service Pack 3
(3128025)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure Important Information Disclosure 3127949 in MS16-133
Microsoft Office 2010
Microsoft Office 2010 Service Pack 2 (32-bit editions)
(3118380)
Not applicable Important Remote Code Execution Important Information Disclosure Not applicable Not applicable Not applicable Not applicable 3118309 in MS16-107
Microsoft Office 2010 Service Pack 2 (64-bit editions)
(3118380)
Not applicable Important Remote Code Execution Important Information Disclosure Not applicable Not applicable Not applicable Not applicable 3118309 in MS16-107
Microsoft Office 2010 Service Pack 2 (32-bit editions)
(3128032)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure Important Information Disclosure 3127951 in MS16-133
Microsoft Office 2010 Service Pack 2 (64-bit editions)
(3128032)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure Important Information Disclosure 3127951 in MS16-133
Microsoft Office 2010 Service Pack 2 (32-bit editions)
(2889841)
Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 2881071 in MS14-036
Microsoft Office 2010 Service Pack 2 (64-bit editions)
(2889841)
Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable 2881071 in MS14-036
Microsoft Word 2010 Service Pack 2 (32-bit editions)
(3128034)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure Important Information Disclosure 3127953 in MS16-133
Microsoft Word 2010 Service Pack 2 (64-bit editions)
(3128034)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure Important Information Disclosure 3127953 in MS16-133
Microsoft Publisher 2010 Service Pack 2 (32-bit editions)
(3114395)
Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable 2817478 in MS15-116
Microsoft Publisher 2010 Service Pack 2 (64-bit editions)
(3114395)
Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable 2817478 in MS15-116
Microsoft Office 2013
Microsoft Office 2013 Service Pack 1 (32-bit editions)
(3127968)
Not applicable Important Remote Code Execution Important Information Disclosure Not applicable Not applicable Not applicable Not applicable 3118284 in MS16-107
Microsoft Office 2013 Service Pack 1 (64-bit editions)
(3127968)
Not applicable Important Remote Code Execution Important Information Disclosure Not applicable Not applicable Not applicable Not applicable 3118284 in MS16-107
Microsoft Office 2013 RT
Microsoft Office 2013 RT Service Pack 1[1] (3127968) Not applicable Important Remote Code Execution Important Information Disclosure Not applicable Not applicable Not applicable Not applicable 3118284 in MS16-107
Microsoft Office 2016
Microsoft Office 2016 (32-bit edition)
(3127986)
Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable Not applicable Not applicable 3118292 in MS16-107
Microsoft Office 2016 (64-bit edition)
(3127986)
Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable Not applicable Not applicable 3118292 in MS16-107
Microsoft Office 2016 (32-bit edition) [2] Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable None
Microsoft Office 2016 (64-bit edition) [2] Not applicable Not applicable Not applicable Important Remote Code Execution Not applicable Not applicable Not applicable None
Other Office Software
Microsoft Office Compatibility Pack Service Pack 3
(3128024)
Not applicable Not applicable Not applicable Not applicable Not applicable Important Information Disclosure Important Information Disclosure 3127948 in MS16-133
Microsoft Word Viewer
(3128043)
Not applicable Not applicable Important Information Disclosure Not applicable Not applicable Not applicable Not applicable 3118297 in MS16-107
Microsoft Word Viewer
(3127995)
Critical Remote Code Execution Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable None

[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 Office 365 client update channel releases.

*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 for Mac (Table 1 of 2)

Affected Software Microsoft Office Memory Corruption Vulnerability – CVE-2016-7263 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7264 Microsoft Office Security Feature Bypass Vulnerability – CVE-2016-7266 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7268 Microsoft Office Elevation of Privilege Vulnerability – CVE-2016-7300 Updates Replaced*
Microsoft Office for Mac 2011
Microsoft Excel for Mac 2011
(3198808)
Important Remote Code Execution Important Information Disclosure Not applicable Not applicable Not applicable 3198807 in MS16-133
Microsoft Word for Mac 2011
(3198808)
Not applicable Not applicable Not applicable Important Information Disclosure Not applicable 3198807 in MS16-133
Microsoft Office 2016 for Mac
Microsoft Excel 2016 for Mac
(3198800)
Important Remote Code Execution Important Information Disclosure Important Remote Code Execution Not applicable Not applicable 3198798in MS16-133
Other Office for Mac Software
Microsoft Auto Updater for Mac[1] Not applicable Not applicable Not applicable Not applicable Important Elevation of Privilege None

[1]A new version of the Mac AutoUpdate is available. Customers will be prompted to upgrade which is required before installing any other Office for Mac updates.

*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 for Mac (Table 2 of 2)

Affected Software GDI Information Disclosure Vulnerability – CVE-2016-7257 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7290 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7291 Uniscribe Remote Code Execution Vulnerability CVE-2016-7274 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7276 Updates Replaced*
Microsoft Office for Mac 2011
Microsoft Office for Mac 2011
(3198808)
Important Information Disclosure Not applicable Not applicable Critical Remote Code Execution Important Information Disclosure 3198807 in MS16-133
Microsoft Word for Mac 2011
(3198808)
Not applicable Important Information Disclosure Important Information Disclosure Not applicable Not applicable 3198807 in MS16-133
Microsoft Office 2016 for Mac
Microsoft Office 2016 for Mac
(3198800)
Important Information Disclosure Not applicable Not applicable Critical Remote Code Execution Important Information Disclosure 3198798 in MS16-133
Microsoft Excel 2016 for Mac
(3198800)
Not applicable Not applicable Not applicable Not applicable Important Remote Code Execution 3198798 in MS16-133

*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 Information Disclosure Vulnerability – CVE-2016-7265 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7268 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7290 Microsoft Office Information Disclosure Vulnerability – CVE-2016-7291 Updates Replaced*
Microsoft SharePoint Server 2007
Excel Services on Microsoft SharePoint Server 2007 Service Pack 3 (32-bit edition)
(3127892)
Important Information Disclosure Not applicable Not applicable Not applicable 3115112 in MS16-107
Excel Services on Microsoft SharePoint Server 2007 Service Pack 3 (64-bit edition)
(3127892)
Important Information Disclosure Not applicable Not applicable Not applicable 3115112 in MS16-107
Microsoft SharePoint Server 2010
Excel Services on Microsoft SharePoint Server 2010 Service Pack 2
(3128029)
Important Information Disclosure Not applicable Not applicable Not applicable 3118381 in MS16-133
Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2
(3128026)
Not applicable Important Information Disclosure Important Information Disclosure Important Information Disclosure 3127950 in MS16-133
Microsoft Office Web Apps 2010
Microsoft Office Web Apps 2010 Service Pack 2
(3128035)
Not applicable Important Information Disclosure Important Information Disclosure Important Information Disclosure 3127954 in MS16-133

*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 have Microsoft Word 2010 installed. Why am I not being offered the 3128032 update?
The 3128032 update only applies to systems running specific configurations of Microsoft Office 2010. Some configurations will not be offered the update.

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

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-2016-7298.

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-2016-7263 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-7277 No No
Microsoft Office Memory Corruption Vulnerability CVE-2016-7289 No No

Mitigating Factors

Microsoft has not identified any mitigating factors for these vulnerabilities.

Workarounds

Microsoft has not identified any workarounds for these vulnerabilities.

Uniscribe Remote Code Execution Vulnerability CVE-2016-7274

A remote code execution vulnerability exists in Windows due to the way Windows Uniscribe handles objects in the memory. An attacker who successfully exploited this vulnerability 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.

There are multiple ways an attacker could exploit this vulnerability.

  • In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit this vulnerability and then convince a user to view the website. An attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by getting them to click a link in an email message or in an Instant Messenger message that takes users to the attacker's website, or by opening an attachment sent through email.
  • In a file sharing attack scenario, an attacker could provide a specially crafted document file that is designed to exploit this vulnerability, and then convince a user to open the document file.

The security update addresses these vulnerabilities by correcting how the Windows Uniscribe handles objects in the 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
Uniscribe Remote Code Execution Vulnerability CVE-2016-7274 No No

Mitigating Factors

Microsoft has not identified any mitigating factor for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

Microsoft Office OLE DLL Side Loading Vulnerability – CVE-2016-7275

A remote code execution vulnerability exists when Microsoft Office improperly validates input before loading libraries. An attacker who successfully exploited the vulnerability could take control of an 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.

To exploit the vulnerability, an attacker would need access to the local system and the ability to execute a specially crafted application on the system.

The security update addresses the vulnerability by correcting how Microsoft Office validates input before loading libraries.

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 OLE DLL Side Loading Vulnerability CVE-2016-7275 No No

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

Microsoft Office Security Feature Bypass Vulnerability – CVE-2016-7267

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.

The security update addresses the vulnerability by correcting how Office software handles the parsing of file formats.

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 Security Feature Bypass Vulnerability CVE-2016-7267 No No

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

Microsoft Office Security Feature Bypass Vulnerability – CVE-2016-7262

A security feature bypass vulnerability exists when Microsoft Office improperly handles input. An attacker who successfully exploited the vulnerability could execute arbitrary commands.

In a file sharing attack scenario, an attacker could provide a specially crafted document file that is designed to exploit the vulnerability, and then convince users to open the document file and interact with the document by clicking on a specific cell.

The update addresses the vulnerability by correcting how Microsoft Office handles input.

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 Security Feature Bypass Vulnerability CVE-2016-7262 No No

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

Microsoft Office Security Feature Bypass Vulnerability – CVE-2016-7266

A security feature bypass vulnerability exists when Microsoft Office improperly checks registry settings when an attempt is made to run embedded content. An attacker who successfully exploited the vulnerability could execute arbitrary commands. In a file sharing attack scenario, an attacker could provide a specially crafted document file that is designed to exploit the vulnerability, and then convince users to attempt to open the document multiple times.

The update addresses the vulnerability by correcting how Microsoft Office checks registry settings when a user attempts to open or execute embedded content.

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 Security Feature Bypass Vulnerability CVE-2016-7266 No No

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

GDI Information Disclosure Vulnerability – CVE-2016-7257

An information disclosure vulnerability exists when Microsoft Office fails to properly handle objects in memory, allowing an attacker to retrieve information that could lead to an Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited this vulnerability could cause an information disclosure to bypass the ASLR security feature that protects users from a broad class of vulnerabilities.

The security feature bypass itself does not allow arbitrary code execution. However, an attacker could use the ASLR bypass vulnerability in conjunction with another vulnerability, such as a remote code execution vulnerability, that could take advantage of the ASLR bypass to run arbitrary code.

To exploit this vulnerability, an attacker could convince a use to run a specially crafted application. The security update addresses the vulnerability by correcting how Microsoft Office handles addresses 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
GDI Information Disclosure Vulnerability CVE-2016-7257 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 Information Disclosure Vulnerabilities

Multiple information disclosure vulnerabilities exist when affected Microsoft Office software reads out of bound memory, which could disclose the contents of memory. An attacker who successfully exploited the vulnerabilities could view out of bound memory.

Exploitation of the vulnerabilities requires that a user open a specially crafted file with an affected version of Microsoft Office software.

The security update addresses the vulnerabilities by properly initializing affected variables.

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 Information Disclosure Vulnerability CVE-2016-7264 No No
Microsoft Office Information Disclosure Vulnerability CVE-2016-7265 No No
Microsoft Office Information Disclosure Vulnerability CVE-2016-7268 No No
Microsoft Office Information Disclosure Vulnerability CVE-2016-7276 No No
Microsoft Office Information Disclosure Vulnerability CVE-2016-7290 No No
Microsoft Office Information Disclosure Vulnerability CVE-2016-7291 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 (MAU) Office Elevation of Privilege Vulnerability – CVE-2016-7300

An elevation of privilege vulnerability exists when the Microsoft AutoUpdate (MAU) application for Mac improperly validates updates before executing them. An attacker who successfully exploited the vulnerability who already has the ability to execute code on a system could elevate privileges. To exploit the vulnerability, the attacker could place a crafted executable in a specific location used by the update application to execute arbitrary code in a privileged context.

This update addresses the vulnerability by ensuring that the Microsoft AutoUpdate (MAU) for Mac properly validates packages prior to installing them.

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 (MAU) Office Elevation of Privilege Vulnerability CVE-2016-7300 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 (December 13, 2016): Bulletin published.
  • V1.1 (December 21, 2016): Revised bulletin to correct a CVE ID. CVE-2016-7298 has been changed to CVE-2016-7274, and the vulnerability information has been updated. This is an informational change only. Customers who have successfully installed the updates do not need to take any further action.

Page generated 2016-12-21 10:09-08:00.