Microsoft Security Bulletin MS16-148 - Critical

Security Update for Microsoft Office (3204068)

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

Version: 1.1

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.

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).

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.

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.


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

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

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  • 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.
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