Microsoft Security Bulletin MS15-116 - Important

Security Update for Microsoft Office to Address Remote Code Execution (3104540)

Published: November 10, 2015

Version: 1.0

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 Office handles objects in memory
  • Ensuring that Internet Explorer prevents affected Office applications from being instantiated via a COM control
  • Correcting how Microsoft Outlook validates and sanitizes HTML input

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

For more information about this update, see Microsoft Knowledge Base Article 3104540

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 November bulletin summary.  

Microsoft Office Software

Vulnerability Severity Rating and Maximum Security Impact by Affected Software

Affected Software

Microsoft Office Elevation of Privilege Vulnerability – CVE-2015-2503

Microsoft Office Memory Corruption Vulnerability – CVE-2015-6038

Microsoft Office Memory Corruption Vulnerability – CVE-2015-6091

Microsoft Office Memory Corruption Vulnerability – CVE-2015-6092

Microsoft Office Memory Corruption Vulnerability – CVE-2015-6093

Microsoft Office Memory Corruption Vulnerability – CVE-2015-6094

Microsoft Outlook for Mac Spoofing Vulnerability – CVE-2015-6123

Updates Replaced*

Microsoft Office 2007

Microsoft Office 2007 Service Pack 3
(3101555)

Not applicable

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

3085544 in MS15-046

Microsoft Access 2007 Service Pack 3
(2596614)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Excel 2007 Service Pack 3
(3101554)

Important
Elevation of Privilege

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3085615 in MS15-110

Microsoft InfoPath 2007 Service Pack 3
(2687406)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2687439 in MS12-066

Microsoft OneNote 2007 Service Pack 3
(2889915)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2596857 in MS14-048

Microsoft PowerPoint 2007 Service Pack 3
(3085548)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3055051 in MS15-081

Microsoft Project 2007 Service Pack 3
(2596770)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Publisher 2007 Service Pack 3
(2880506)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2817565 in MS14-020

Microsoft Visio 2007 Service Pack 3
(3101553)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3085542 in MS15-110

Microsoft Word 2007 Service Pack 3
(3085552)

Important
Elevation of Privilege

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

3055052 in MS15-081

Microsoft Office 2007 IME (Japanese) Service Pack 3
(2899473)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2889913 in MS14-078

Microsoft Office 2010

Microsoft Office 2010 Service Pack 2 (32-bit editions)
(3101521)

Not applicable

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

2687501 in MS12-057

Microsoft Office 2010 Service Pack 2 (64-bit editions)
(3101521)

Not applicable

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

2687501 in MS12-057

Microsoft Office 2010 Service Pack 2 (32-bit editions)
(3101529)

Not applicable

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

3055037 in MS15-081

Microsoft Office 2010 Service Pack 2 (64-bit editions)
(3101529)

Not applicable

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

3055037 in MS15-081

Microsoft Access 2010 Service Pack 2 (32-bit editions)
(3101544)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Access 2010 Service Pack 2 (64-bit editions)
(3101544)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Excel 2010 Service Pack 2 (32-bit editions)
(3101543)

Important
Elevation of Privilege

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

3085609 in MS15-110

Microsoft Excel 2010 Service Pack 2 (64-bit editions)
(3101543)

Important
Elevation of Privilege

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

3085609 in MS15-110

Microsoft InfoPath 2010 Service Pack 2 (32-bit editions)
(2878230)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2687422 in MS13-035

Microsoft InfoPath 2010 Service Pack 2 (64-bit editions)
(2878230)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2687422 in MS13-035

Microsoft OneNote 2010 Service Pack 2 (32-bit editions)
(3054978)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft OneNote 2010 Service Pack 2 (64-bit editions)
(3054978)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft PowerPoint 2010 Service Pack 2 (32-bit editions)
(3085594)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3055033 in MS15-081

Microsoft PowerPoint 2010 Service Pack 2 (64-bit editions)
(3085594)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3055033 in MS15-081

Microsoft Project 2010 Service Pack 2 (32-bit editions)
(3085614)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Project 2010 Service Pack 2 (64-bit editions)
(3085614)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Publisher 2010 Service Pack 2 (32-bit editions)
(2817478)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2553147 in MS13-042

Microsoft Publisher 2010 Service Pack 2 (64-bit editions)
(2817478)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2553147 in MS13-042

Microsoft Visio 2010 Service Pack 2 (32-bit editions)
(3101526)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3085514 in MS15-110

Microsoft Visio 2010 Service Pack 2 (64-bit editions)
(3101526)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3085514 in MS15-110

Microsoft Word 2010 Service Pack 2 (32-bit editions)
(2965313)

Important
Elevation of Privilege

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

2553428 in MS15-033

Microsoft Word 2010 Service Pack 2 (64-bit editions)
(2965313)

Important
Elevation of Privilege

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

2553428 in MS15-033

Microsoft Pinyin IME 2010 (32-bit version)
(2899516)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2687413 in MS13-075

Microsoft Pinyin IME 2010 (64-bit version)
(2899516)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2687413 in MS13-075

Microsoft Office 2013

Microsoft Office 2013 Service Pack 1 (32-bit editions)
(3101360)

Not applicable

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

2956151 in MS15-022

Microsoft Office 2013 Service Pack 1 (64-bit editions)
(3101360)

Not applicable

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

2956151 in MS15-022

Microsoft Access 2013 Service Pack 1 (32-bit editions)
(3085584)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Access 2013 Service Pack 1 (64-bit editions)
(3085584)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Excel 2013 Service Pack 1 (32-bit editions)
(3101499)

Important
Elevation of Privilege

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

3085583 in MS15-110

Microsoft Excel 2013 Service Pack 1 (64-bit editions)
(3101499)

Important
Elevation of Privilege

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

3085583 in MS15-110

Microsoft InfoPath 2013 Service Pack 1 (32-bit editions)
(3054793)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft InfoPath 2013 Service Pack 1 (64-bit editions)
(3054793)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft OneNote 2013 Service Pack 1 (32-bit editions)
(3101371)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft OneNote 2013 Service Pack 1 (64-bit editions)
(3101371)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft PowerPoint 2013 Service Pack 1 (32-bit editions)
(3101359)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3055029 in MS15-081

Microsoft PowerPoint 2013 Service Pack 1 (64-bit editions)
(3101359)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3055029 in MS15-081

Microsoft Project 2013 Service Pack 1 (32-bit editions)
(3101506)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Project 2013 Service Pack 1 (64-bit editions)
(3101506)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Publisher 2013 Service Pack 1 (32-bit editions)
(3085561)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Publisher 2013 Service Pack 1 (64-bit editions)
(3085561)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Visio 2013 Service Pack 1 (32-bit editions)
(3101365)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3054929 in MS15-081

Microsoft Visio 2013 Service Pack 1 (64-bit editions)
(3101365)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3054929 in MS15-081

Microsoft Word 2013 Service Pack 1 (32-bit editions)
(3101370)

Important
Elevation of Privilege

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

3055030 in MS15-081

Microsoft Word 2013 Service Pack 1 (64-bit editions)
(3101370)

Important
Elevation of Privilege

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

3055030 in MS15-081

Microsoft Office 2013 RT

Microsoft Office 2013 RT Service Pack 1
(3101360)[1]

Not applicable

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

2956151 in MS15-022

Microsoft Excel 2013 RT Service Pack 1
(3101499)[1]

Important
Elevation of Privilege

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

3085583 in MS15-110

Microsoft OneNote 2013 RT Service Pack 1
(3101371)[1]

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft PowerPoint 2013 RT Service Pack 1
(3101359)[1]

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3055029 in MS15-081

Microsoft Word 2013 RT Service Pack 1
(3101370)[1]

Important
Elevation of Privilege

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

3055030 in MS15-081

Microsoft Office 2016

Microsoft Office 2016 (32-bit edition)
(3101512)

Not applicable

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

None

Microsoft Office 2016 (64-bit edition)
(3101512)

Not applicable

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

None

Microsoft Office 2016 (32-bit edition)
(3101514)

Not applicable

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

None

Microsoft Office 2016 (64-bit edition)
(3101514)

Not applicable

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

None

Microsoft Access 2016 (32-bit edition)
(2910978)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Access 2016 (64-bit edition)
(2910978)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Excel 2016 (32-bit edition)
(3101510)

Important
Elevation of Privilege

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

2920693 in MS15-110

Microsoft Excel 2016 (64-bit edition)
(3101510)

Important
Elevation of Privilege

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

2920693 in MS15-110

Microsoft OneNote 2016 (32-bit edition)
(2920726)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft OneNote 2016 (64-bit edition)
(2920726)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft PowerPoint 2016 (32-bit edition)
(3101509)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft PowerPoint 2016 (64-bit edition)
(3101509)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Project 2016 (32-bit edition)
(2920698)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Project 2016 (64-bit edition)
(2920698)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Publisher 2016 (32-bit edition)
(2920680)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Publisher 2016 (64-bit edition)
(2920680)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

None

Microsoft Visio 2016 (32-bit edition)
(3101507)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2920708 in MS15-081

Microsoft Visio 2016 (64-bit edition)
(3101507)

Important
Elevation of Privilege

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

2920708 in MS15-081

Microsoft Word 2016 (32-bit edition)
(3101513)

Important
Elevation of Privilege

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

2920691 in MS15-081

Microsoft Word 2016 (64-bit edition)
(3101513)

Important
Elevation of Privilege

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

2920691 in MS15-081

Microsoft Office for Mac 2011

Microsoft Excel for Mac 2011
(3102924)

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Important
Spoofing

3097266 in MS15-110

Microsoft Office 2016 for Mac

Microsoft Excel 2016 for Mac
(3102925)

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Important
Spoofing

3097264 in MS15-110

Other Office Software

Microsoft Office Compatibility Pack Service Pack 3
(3101558)

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3085618 in MS15-110

Microsoft Office Compatibility Pack Service Pack 3
(3085551)

Not applicable

Not applicable

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

2986254 in MS15-081

Microsoft Excel Viewer
(3101560)

Not applicable

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

3085619 in MS15-110

Microsoft Word Viewer
(3101564)

Not applicable

Not applicable

Important
Remote Code Execution

Important
Remote Code Execution

Not applicable

Not applicable

Not applicable

3055053 in MS15-081

[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 KB number, and then view update details (updates replaced information is on the Package Details tab).

Microsoft Office Services and Web Apps

Vulnerability Severity Rating and Maximum Security Impact by Affected Software

Affected Software

Microsoft Office Memory Corruption Vulnerability – CVE-2015-6038

Microsoft Office Memory Corruption Vulnerability – CVE-2015-6093

Microsoft Office Memory Corruption Vulnerability – CVE-2015-6094

Updates Replaced*

Microsoft SharePoint Server 2007

Excel Services on Microsoft SharePoint Server 2007 Service Pack 3 (32-bit editions)
(3101559)

Important
Remote Code Execution

Not applicable

Not applicable

3054994 in MS15-110

Excel Services on Microsoft SharePoint Server 2007 Service Pack 3 (64-bit editions)
(3101559)

Important
Remote Code Execution

Not applicable

Not applicable

3054994 in MS15-110

Microsoft SharePoint Server 2010

Excel Services on Microsoft SharePoint Server 2010 Service Pack 2
(3101525)

Important
Remote Code Execution

Not applicable

Not applicable

3085596 in MS15-110

Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2
(3085511)

Not applicable

Important
Remote Code Execution

Not applicable

3054960 in MS15-081

Microsoft SharePoint Server 2013

Excel Services on Microsoft SharePoint Server 2013 Service Pack 1
(3101364)

Important
Remote Code Execution

Not applicable

Important
Remote Code Execution

3085568 in MS15-110

Word Automation Services on Microsoft SharePoint Server 2013 Service Pack 1
(3085477)

Not applicable

Important
Remote Code Execution

Not applicable

3054858 in MS15-081

Microsoft Office Web Apps 2010

Microsoft Office Web Apps 2010 Service Pack 2
(3101533)

Not applicable

Important
Remote Code Execution

Not applicable

3085520 in MS15-110

Microsoft Office Web Apps 2013

Microsoft Office Web Apps Server 2013 Service Pack 1
(3101367)

Not applicable

Important
Remote Code Execution

Not applicable

3085571 in MS15-110

*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).

Microsoft Communications Platforms and Software

Software

Microsoft Office Elevation of Privilege Vulnerability – CVE-2015-2503

Updates Replaced

Skype for Business 2016

Skype for Business 2016 (32-bit)
(3085634)

Important
Elevation of Privilege

2910994 in MS15-097

Skype for Business Basic 2016 (32-bit)
(3085634)

Important
Elevation of Privilege

2910994 in MS15-097

Skype for Business 2016 (64-bit)
(3085634)

Important
Elevation of Privilege

2910994 in MS15-097

Skype for Business Basic 2016 (64-bit)
(3085634)

Important
Elevation of Privilege

2910994 in MS15-097

Microsoft Lync 2013 (Skype for Business)

Microsoft Lync 2013 Service Pack 1 (32-bit)
(Skype for Business)[1]
(3101496)

Important
Elevation of Privilege

3085500 in MS15-097

Microsoft Lync Basic 2013 Service Pack 1 (32-bit)[1]
(Skype for Business Basic)
(3101496)

Important
Elevation of Privilege

3085500 in MS15-097

Microsoft Lync 2013 Service Pack 1 (64-bit)
(Skype for Business)[1]
(3101496)

Important
Elevation of Privilege

3085500 in MS15-097

Microsoft Lync Basic 2013 Service Pack 1 (64-bit)[1]
(Skype for Business Basic)
(3101496)

Important
Elevation of Privilege

3085500 in MS15-097

[1]Before installing this update, you must have update 2965218 and security update 3039779 installed. See the Update FAQ for more information.

I have Microsoft Word 2010 installed. Why am I not being offered the 3101529 update?
The 3101529 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.

For example, 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 example, when an update applies to Microsoft Office 2013 products, only Microsoft Office 2013 may be specifically listed in the Affected Software table. However, the update could apply to Microsoft Word 2013, Microsoft Excel 2013, Microsoft Visio 2013, or any other Microsoft Office 2013 product that is not specifically listed in the Affected Software table.

Why are some of the update files listed in this bulletin also denoted in MS15-123 - Security Update for Skype for Business and Lync to Address Information Disclosure? 
Several of the update files listed in this bulletin (MS15-116) are also denoted in MS15-123 because of overlaps in affected software. Although the two bulletins address separate security vulnerabilities, the security updates have been consolidated where possible and appropriate. For this reason, some identical update files are present in both of these bulletins.

Note that identical update files shipping with multiple bulletins do not need to be installed more than once.

Are there any prerequisites for any of the updates offered in this bulletin for affected editions of Microsoft Lync 2013 (Skype for Business)? 
Yes. Customers running affected editions of Microsoft Lync 2013 (Skype for Business) must first install the 2965218 update for Office 2013 released in April, 2015, and then the 3039779 security update released in May, 2015. For more information about these two prerequisite updates, see:

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.

The security update addresses the vulnerabilities by correcting how Office handles objects in memory.

The following tables contain links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list:

Vulnerability title

CVE number

Publicly disclosed

Exploited

Microsoft Office Memory Corruption Vulnerability

CVE-2015-6038

No

No

Microsoft Office Memory Corruption Vulnerability

CVE-2015-6091

No

No

Microsoft Office Memory Corruption Vulnerability

CVE-2015-6092

No

No

Microsoft Office Memory Corruption Vulnerability

CVE-2015-6093

No

No

Microsoft Office Memory Corruption Vulnerability

CVE-2015-6094

No

No

 

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for these vulnerabilities. 

Microsoft Office Elevation of Privilege Vulnerability – CVE-2015-2503

An elevation of privilege vulnerability exists in Microsoft Office software when an attacker instantiates an affected Office application via a COM control. An attacker who successfully exploited the vulnerability could gain elevated privileges and break out of the Internet Explorer sandbox.

To successfully exploit this vulnerability, an attacker would have to take advantage of an existing vulnerability in Internet Explorer by tricking a user into downloading a specially crafted application.

Most likely, this vulnerability would be used in conjunction with another vulnerability that allowed remote code execution. For example, an attacker could exploit another vulnerability to run arbitrary code through Internet Explorer, but due to the context in which processes are launched by Internet Explorer, the code might be restricted to run at a low integrity level (very limited permissions). However, an attacker could, in turn, exploit this vulnerability to cause the arbitrary code to run at a medium integrity level (permissions of the current user).

The security update addresses the vulnerability by ensuring that Internet Explorer prevents affected Office applications from being instantiated via a COM control.

This vulnerability has been publicly disclosed. It has been assigned Common Vulnerability and Exposure number CVE-2015-2503. At the time this security bulletin was originally issued, Microsoft was unaware of any attack attempting to exploit this vulnerability.

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

Microsoft has not identified any workarounds for this vulnerability. 

Microsoft Outlook for Mac Spoofing Vulnerability – CVE-2015-6123

A spoofing vulnerability exists when Microsoft Outlook for Mac does not sanitize HTML or treat it in a safe manner. An attacker who successfully exploited this vulnerability could trick a user by redirecting them to a malicious website. The malicious website could spoof content or be used as a pivot to chain an attack with other vulnerabilities in web services.

For this vulnerability to be exploited, a user must preview a maliciously crafted email from an attacker where they would unknowingly be redirected to a malicious URL.

The update addresses the vulnerability by correcting how Microsoft Outlook validates and sanitizes HTML input. Microsoft received information about the vulnerability through coordinated vulnerability disclosure. At the time this security bulletin was originally issued, Microsoft was unaware of any attack attempting to exploit this vulnerability.

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. 

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.

  • V1.0 (November 10, 2015): Bulletin published.
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