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Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3048019)

Published: April 14, 2015 Updated: April 21, 2015

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.

This security update is rated Critical for all supported editions of the following software:

• Microsoft Word 2007, Microsoft Office 2010, Microsoft Word 2010
• Microsoft Word Viewer, Microsoft Office Compatibility Pack
• Word Automation Services on Microsoft SharePoint Server 2010
• Microsoft Office Web Apps Server 2010

This security update is rated Important for all supported editions of the following software:

• Microsoft Word 2013
• Microsoft Office for Mac 2011, Microsoft Word for Mac 2011, Outlook for Mac for Office 365
• Word Automation Services on Microsoft SharePoint Server 2013
• Microsoft Office Web Apps Server 2013

For more information, see the Affected Software section.

The security update addresses the vulnerabilities by correcting how Microsoft Office parses specially crafted files, by correcting how Office handles files in memory, and by helping to ensure that SharePoint Server properly sanitizes user input. For more information about the vulnerabilities, see the Vulnerability Information section.

For more information about this update, see Microsoft Knowledge Base Article 3048019.

Affected Software

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.

Microsoft Office Software

**Microsoft Office Suites Software**	**Component**	**Maximum Security Impact**	**Aggregate Severity Rating**	**Updates Replaced**
**Microsoft Office 2007**
Microsoft Office 2007 Service Pack 3	[Microsoft Word 2007 Service Pack 3](https://www.microsoft.com/download/details.aspx?familyid=73f5dfd3-bd55-495a-b822-b6afb00ed368) (2965284)	Remote Code Execution	Critical	2956109 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
**Microsoft Office 2010**
[Microsoft Office 2010 Service Pack 2 (32-bit editions)](https://www.microsoft.com/download/details.aspx?familyid=9152b9ef-0ce2-4f27-a70a-c753f0b12d05) (2965236)	Not applicable	Remote Code Execution	Critical	2956138 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
[Microsoft Office 2010 Service Pack 2 (64-bit editions)](https://www.microsoft.com/download/details.aspx?familyid=86a863ad-bed3-4aea-929c-2b85c388205f) (2965236)	Not applicable	Remote Code Execution	Critical	2956138 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
Microsoft Office 2010 Service Pack 2 (32-bit editions)	[Microsoft Word 2010 Service Pack 2 (32-bit editions)](https://www.microsoft.com/download/details.aspx?familyid=7614904a-99c1-44fe-abf7-6dc7d365ef63) (2553428)	Remote Code Execution	Critical	2956139 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
Microsoft Office 2010 Service Pack 2 (64-bit editions)	[Microsoft Word 2010 Service Pack 2 (64-bit editions)](https://www.microsoft.com/download/details.aspx?familyid=be87fa00-9cf6-47a3-863c-2ed92ad5a738) (2553428)	Remote Code Execution	Critical	2956139 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
**Microsoft Office 2013 and Microsoft Office 2013 RT**
Microsoft Office 2013 Service Pack 1 (32-bit editions)	[Microsoft Word 2013 Service Pack 1 (32-bit editions)](https://www.microsoft.com/download/details.aspx?familyid=2c4bcf40-ff37-49af-b641-207bfc997936) (2965224)	Remote Code Execution	Important	2956163 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
Microsoft Office 2013 Service Pack 1 (64-bit editions)	[Microsoft Word 2013 Service Pack 1 (64-bit editions)](https://www.microsoft.com/download/details.aspx?familyid=3bad7311-e0bd-417a-89b7-7b8378a1fc52) (2965224)	Remote Code Execution	Important	2956163 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
Microsoft Office 2013 RT Service Pack 1	Microsoft Word 2013 RT Service Pack 1 (2965224) [1]	Remote Code Execution	Important	2956163 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
**Microsoft Office for Mac**
[Microsoft Outlook for Mac for Office 365](https://www.microsoft.com/download/details.aspx?familyid=65542ae1-62b8-41d8-b5ed-3a51194acb73) (3055707)	Not applicable	Elevation of Privilege	Important	None
[Microsoft Office for Mac 2011](https://www.microsoft.com/download/details.aspx?familyid=1d9eec35-7499-45e6-b403-936d84ec046b) (3051737)	Not applicable	Elevation of Privilege	Important	3018888 in [MS14-081](http://go.microsoft.com/fwlink/?linkid=519132)
Microsoft Office for Mac 2011	[Microsoft Word for Mac 2011](https://www.microsoft.com/download/details.aspx?familyid=1d9eec35-7499-45e6-b403-936d84ec046b) (3051737)	Remote Code Execution	Important	3018888 in [MS14-081](http://go.microsoft.com/fwlink/?linkid=519132)
**Other Office Software**
[Microsoft Word Viewer](https://www.microsoft.com/download/details.aspx?familyid=7b03e9ff-f67e-4e96-9831-a0cad1a13e31) (2965289)	Not applicable	Remote Code Execution	Critical	2956188 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
[Microsoft Office Compatibility Pack Service Pack 3](https://www.microsoft.com/download/details.aspx?familyid=daf8e168-0327-4623-8183-e5071b81bbf2) (2965210)	Not applicable	Remote Code Execution	Critical	2956107 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)

^[1]This update is available via [Windows Update](http://go.microsoft.com/fwlink/?linkid=21130).

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Microsoft Office Services and Web Apps

**Microsoft Office Services and Web Apps**	**Component**	**Maximum Security Impact**	**Aggregate Severity Rating**	**Updates Replaced**
**Microsoft SharePoint Server 2010**
Microsoft SharePoint Server 2010 Service Pack 2	[Word Automation Services](https://www.microsoft.com/download/details.aspx?familyid=7e9f2d0c-9e17-438a-825a-2068e3501630) (2553164)	Remote Code Execution	Critical	2956136 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
**Microsoft SharePoint Server 2013**
Microsoft SharePoint Server 2013 Service Pack 1	[Word Automation Services](https://www.microsoft.com/download/details.aspx?familyid=3ff0407a-76eb-43f8-b886-01e4e4b1c85e) (2965215)	Remote Code Execution	Important	2920731 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
**Microsoft Office Web Apps 2010**
Microsoft Office Web Apps 2010 Service Pack 2	[Microsoft Office Web Apps Server 2010 Service Pack 2](https://www.microsoft.com/download/details.aspx?familyid=69103d38-35ff-42b8-b50e-55169d5ea3bf) (2965238)	Remote Code Execution	Critical	2956069 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)
**Microsoft Office Web Apps 2013**
Microsoft Office Web Apps 2013 Service Pack 1	[Microsoft Office Web Apps Server 2013 Service Pack 1](https://www.microsoft.com/download/details.aspx?familyid=d40b7ded-c9b9-4ea9-9fb5-9d32b32f6534)[2](2965306)	Remote Code Execution	Important	2956158 in [MS15-022](http://go.microsoft.com/fwlink/?linkid=526461)

^[2] Office Web Apps Server cannot be updated via automatic updating. For recommended instructions on how to apply updates to Office Web Apps Server, see [Apply software updates to Office Web Apps Server](https://technet.microsoft.com/library/jj966220).

Update FAQ

Does this update contain any additional security-related changes to functionality?
Yes. In addition to the changes that are listed for the vulnerabilities described in this bulletin, this update includes defense-in-depth updates to Microsoft Office for Mac 2011 to help make it more secure.

I have Microsoft Word 2010 installed. Why am I not being offered the 2965236 update?
The 2965236 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 listed in the Affected Software 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.

Does this update contain any additional security-related changes?
In addition to the changes that are listed for the vulnerabilities described in this bulletin, this update includes defense-in-depth updates to help improve security-related features.

Severity Ratings and Vulnerability Identifiers

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 April bulletin summary.

Microsoft Office Software

**Vulnerability Severity Rating and Maximum Security Impact by Affected Software**
**Affected Software**	[**Microsoft Office Memory Corruption Vulnerability – CVE-2015-1641**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-1641)	[**Microsoft Office Component Use After Free Vulnerability - CVE-2015-1649**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-1649)	[**Microsoft Office Component Use After Free Vulnerability - CVE-2015-1650**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-1650)	[**Microsoft Office Component Use After Free Vulnerability - CVE-2015-1651**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-1651)	[**Microsoft Outlook App for Mac XSS Vulnerability – CVE-2015-1639**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-1639)	**Aggregate Severity Rating**
**Microsoft Office 2007**
Microsoft Word 2007 Service Pack 3	**Important** Remote Code Execution (2965284)	**Critical** Remote Code Execution (2965284)	**Important** Remote Code Execution (2965284)	**Critical** Remote Code Execution (2965284)	Not applicable	**Critical**
**Microsoft Office 2010**
Microsoft Office 2010 Service Pack 2 (32-bit editions)	**Important** Remote Code Execution (2965236)	**Critical** Remote Code Execution (2965236)	**Important** Remote Code Execution (2965236)	Not applicable	Not applicable	**Critical**
Microsoft Office 2010 Service Pack 2 (64-bit editions)	**Important** Remote Code Execution (2965236)	**Critical** Remote Code Execution (2965236)	**Important** Remote Code Execution (2965236)	Not applicable	Not applicable	**Critical**
Microsoft Word 2010 Service Pack 2 (32-bit editions)	**Important** Remote Code Execution (2553428)	**Critical** Remote Code Execution (2553428)	**Important** Remote Code Execution (2553428)	Not applicable	Not applicable	**Critical**
Microsoft Word 2010 Service Pack 2 (64-bit editions)	**Important** Remote Code Execution (2553428)	**Critical** Remote Code Execution (2553428)	**Important** Remote Code Execution (2553428)	Not applicable	Not applicable	**Critical**
**Microsoft Office 2013 and Microsoft Office 2013 RT**
Microsoft Word 2013 Service Pack 1 (32-bit editions)	**Important** Remote Code Execution (2965224)	Not applicable	**Important** Remote Code Execution (2965224)	Not applicable	Not applicable	**Important**
Microsoft Word 2013 Service Pack 1 (64-bit editions)	**Important** Remote Code Execution (2965224)	Not applicable	**Important** Remote Code Execution (2965224)	Not applicable	Not applicable	**Important**
Microsoft Word 2013 RT Service Pack 1	**Important** Remote Code Execution (2965224)	Not applicable	**Important** Remote Code Execution (2965224)	Not applicable	Not applicable	**Important**
**Microsoft Office for Mac**
Microsoft Outlook for Mac for Office 365	Not applicable	Not applicable	Not applicable	Not applicable	Not applicable	**Important** Elevation of Privilege (3055707)
Microsoft Office for Mac 2011	Not applicable	Not applicable	Not applicable	Not applicable	**Important** Elevation of Privilege (3051737)	**Important**
Microsoft Word for Mac 2011	**Important** Remote Code Execution (3051737)	Not applicable	Not applicable	Not applicable	Not applicable	**Important**
**Other Office Software**
Microsoft Word Viewer	Not applicable	**Critical** Remote Code Execution (2965289)	**Important** Remote Code Execution (2965289)	**Critical** Remote Code Execution (2965289)	Not applicable	**Critical**
Microsoft Office Compatibility Pack Service Pack 3	**Important** Remote Code Execution (2965210)	**Critical** Remote Code Execution (2965210)	**Important** Remote Code Execution (2965210)	**Critical** Remote Code Execution (2965210)	Not applicable	**Critical**

Microsoft Office Services and Web Apps

**Vulnerability Severity Rating and Maximum Security Impact by Affected Software**
**Affected Software**	[**Microsoft Office Memory Corruption Vulnerability – CVE-2015-1641**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-1641)	[**Microsoft Office Component Use After Free Vulnerability - CVE-2015-1649**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-1649)	[**Microsoft Office Component Use After Free Vulnerability - CVE-2015-1650**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-1650)	[**Microsoft Office Component Use After Free Vulnerability - CVE-2015-1651**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-1651)	[**Microsoft Outlook App for Mac XSS Vulnerability – CVE-2015-1639**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2015-1639)	**Aggregate Severity Rating**
**Microsoft SharePoint Server 2010**
Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2	**Important** Remote Code Execution (2553164)	**Critical** Remote Code Execution (2553164)	**Important** Remote Code Execution (2553164)	Not applicable	Not applicable	**Critical**
**Microsoft SharePoint Server 2013**
Word Automation Services on Microsoft SharePoint Server 2013 Service Pack 1	**Important** Remote Code Execution (2965215)	Not applicable	**Important** Remote Code Execution (2965215)	Not applicable	Not applicable	**Important**
**Microsoft Office Web Apps 2010**
Microsoft Office Web Apps Server 2010 Service Pack 2	**Important** Remote Code Execution (2965238)	**Critical** Remote Code Execution (2965238)	**Important** Remote Code Execution (2965238)	Not applicable	Not applicable	**Critical**
**Microsoft Office Web Apps 2013**
Microsoft Office Web Apps Server 2013 Service Pack 1	**Important** Remote Code Execution (2965306)	Not applicable	**Important** Remote Code Execution (2965306)	Not applicable	Not applicable	**Important**

Vulnerability Information

Microsoft Office Memory Corruption Vulnerability - CVE-2015-1641

A remote code execution vulnerability exists in Microsoft Office software when the Office software fails to properly handle rich text format files in memory.

An attacker who successfully exploited the vulnerability could use a specially crafted file to perform actions in the security context of the current user. The file could then, for example, take actions on behalf of the logged-on user with the same permissions as the current user.

Exploitation of this vulnerability 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 vulnerability 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 vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to visit it, typically by getting them to click a link in an instant messenger or email message, and then convince them to open the specially crafted file.

The security update addresses the vulnerability by correcting how Office handles files in memory.

This vulnerability has been publicly disclosed. It has been assigned Common Vulnerability and Exposure number CVE-2015-1641. Microsoft is aware of limited attacks that attempt 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.

Multiple Microsoft Office Component Use After Free Vulnerabilities

Remote code execution vulnerabilities exist in Microsoft Office software that are caused when the Office software improperly handles objects in memory while parsing specially crafted Office files. This could corrupt system memory in such a way as to allow an attacker to execute arbitrary code.

An attacker who successfully exploited these 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 complete 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 these 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 a 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 visit it, typically by getting them to click a link in an instant messenger or email message, and then convince them to open the specially crafted file.

Office 2019 For Mac

The security update addresses the vulnerabilities by correcting how Microsoft Office parses specially crafted files.

Microsoft received information about the vulnerability through coordinated vulnerability disclosure. When this security bulletin was issued, Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers.

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 Component Use After Free Vulnerability	CVE-2015-1650	No	No

Note that the Preview Pane is an attack vector for the following vulnerabilities:

Vulnerability title	CVE number	Publicly Disclosed	Exploited
Microsoft Office Component Use After Free Vulnerability	CVE-2015-1649	No	No
Microsoft Office Component Use After Free Vulnerability	CVE-2015-1651	No	No

Microsoft Office Free For Mac 2015 Free

### Mitigating Factors Microsoft has not identified any [mitigating factors](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. ### Workarounds Microsoft has not identified any [workarounds](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. Microsoft Outlook App for Mac XSS Vulnerability – CVE-2015-1639 --------------------------------------------------------------- An elevation of privilege vulnerability exists in the Microsoft Outlook for Mac app that is caused when the software improperly sanitizes HTML strings. An attacker who successfully exploited this vulnerability could read content that the attacker is not authorized to read or use the victim's identity to take actions on the targeted site or application. Exploitation of this vulnerability requires that a user views specially crafted content, which then could run a script in the context of the user. 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 specially crafted content that is designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to visit it, typically by getting them to click a link in an instant messenger or email message, and then convince them to open the specially crafted file. The security update addresses the vulnerability by correcting how Microsoft Outlook for Mac sanitizes HTML strings. Microsoft received information about the vulnerability through coordinated vulnerability disclosure. When this security bulletin was issued, Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers. ### Mitigating Factors Microsoft has not identified any [mitigating factors](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. ### Workarounds Microsoft has not identified any [workarounds](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. Security Update Deployment -------------------------- For Security Update Deployment information, see the Microsoft Knowledge Base article referenced 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](https://technet.microsoft.com/library/security/dn903755.aspx) 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 (April 14, 2015): Bulletin published. - V1.1 (April 21, 2015): Revised bulletin to announce a detection change for the 2553428 update for supported editions of Microsoft Word 2010. There were no changes to the update files. Customers who have already successfully updated their systems do not need to take any action. *Page generated 2015-04-21 12:50Z-07:00.*