By Shane Cole
Tuesday, March 11, 2014, 10:50 am PT (01:50 pm ET)
Microsoft Corporation is an American multinational technology company that develops and sells a wide range of consumer and enterprise software, hardware, services, and consumer electronics.
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Published: June 10, 2014
Version: 1.0
This security update resolves one privately reported vulnerability in Microsoft Office. The vulnerability could allow remote code execution if a specially crafted file is opened in an affected version of Microsoft Word. An attacker who successfully exploited this vulnerability could gain the same user rights as 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.
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This security update is rated Important for supported editions of Microsoft Word 2007 and Microsoft Office Compatibility Pack. For more information, see the Affected and Non-Affected Software section.
The security update addresses the vulnerability by correcting the way that Microsoft Office parses specially crafted files. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry later in this bulletin.
Recommendation. Customers can configure automatic updating to check online for updates from Microsoft Update by using the Microsoft Update service. Customers who have automatic updating enabled and configured to check online for updates from Microsoft Update typically will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates from Microsoft Update and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.
For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update at the earliest opportunity using update management software, or by checking for updates using the Microsoft Update service.
See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.
Microsoft office 2011 onenote machine. Important note for Office 365 subscriptions: After September 22, 2016, Office 2011 for Mac is no longer available for installation with an Office 365 subscription. This doesn't affect one-time purchases of Office for Mac 2011 such as, Office Home and Student, Office Home and Business, or Office Professional.
The following software has been tested to determine which versions or editions are affected. Other versions or editions 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.
Affected Software
**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=bea12f29-7ca9-4ef8-975e-cfdb3eab0ccb) (2880515) | Remote Code Execution | Important | 2878237 in [MS14-017](http://go.microsoft.com/fwlink/?linkid=393531) |
**Other Office software** | ||||
[Microsoft Office Compatibility Pack Service Pack 3](https://www.microsoft.com/download/details.aspx?familyid=0e24d905-b311-4353-b51a-e8276bc07229) (2880513) | Not applicable | Remote Code Execution | Important | 2878236 in [MS14-017](http://go.microsoft.com/fwlink/?linkid=393531) |
Non-Affected Software
Office and Other Software |
Microsoft Word 2010 Service Pack 1 (32-bit editions) |
Microsoft Word 2010 Service Pack 2 (32-bit editions) |
Microsoft Word 2010 Service Pack 1 (64-bit editions) |
Microsoft Word 2010 Service Pack 2 (64-bit editions) |
Microsoft Word 2013 (32-bit editions) |
Microsoft Word 2013 Service Pack 1 (32-bit editions) |
Microsoft Word 2013 (64-bit editions) |
Microsoft Word 2013 Service Pack 1 (64-bit editions) |
Microsoft Word 2013 RT |
Microsoft Word 2013 RT Service Pack 1 |
Microsoft Office for Mac 2011 |
**Vulnerability Severity Rating and Maximum Security Impact by Affected Software** | ||
**Affected Software** | **Embedded Font Vulnerability - CVE-2014-2778** | **Aggregate Severity Rating** |
**Microsoft Office 2007** | ||
Microsoft Word 2007 Service Pack 3 | **Important** Remote Code Execution | **Important** |
**Other Office software** | ||
Microsoft Office Compatibility Pack Service Pack 3 | **Important** Remote Code Execution | **Important** |
A remote code execution vulnerability exists in the way that affected Microsoft Office software parses specially crafted files. An attacker who successfully exploited this vulnerability could take complete 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 view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2014-2778.
Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors may be helpful in your situation:
Workaround refers to a setting or configuration change that does not correct the underlying vulnerability but would help block known attack vectors before you apply the update. Microsoft has tested the following workarounds and states in the discussion whether a workaround reduces functionality:
Do not open Office files that you receive from untrusted sources or that you receive unexpectedly from trusted sources
Do not open Office files that you receive from untrusted sources or that you receive unexpectedly from trusted sources. This vulnerability could be exploited when a user opens a specially crafted file.
What is the scope of the vulnerability?
This is a remote code execution vulnerability in the context of the current user.
What causes the vulnerability?
The vulnerability is caused when Microsoft Word does not properly handle objects in memory while parsing specially crafted Office files. System memory may be corrupted in such a way that an attacker could execute arbitrary code.
What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability 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.
How could an attacker exploit the vulnerability?
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 a specially crafted file to the user and by convincing the user to open the file in an affected version of Microsoft Office software.
In a web-based attack scenario, an attacker could host a website that contains a file that is used to attempt to exploit the vulnerability. In addition, compromised websites and websites that accept or host user-provided content could contain specially crafted content that could exploit this vulnerability. An attacker would have no way to force users to visit a specially crafted website. Instead, an attacker would have to convince them to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes them to the attacker's site, and then convince them to open the specially crafted file in an affected version of Microsoft Office software.
What systems are primarily at risk from the vulnerability?
Systems where affected Microsoft Office software is used, including workstations and terminal servers, are primarily at risk. Servers could be at more risk if administrators allow users to log on to servers and to run programs. However, best practices strongly discourage allowing this.
What does the update do?
This update addresses the vulnerability by correcting the way that Microsoft Office parses specially crafted files.
When this security bulletin was issued, had this vulnerability been publicly disclosed?
No. Microsoft received information about this vulnerability through coordinated vulnerability disclosure.
When this security bulletin was issued, had Microsoft received any reports that this vulnerability was being exploited?
No. Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers when this security bulletin was originally issued.
Several resources are available to help administrators deploy security updates.
For information about these and other tools that are available, see Security Tools for IT Pros.
Reference Table
The following table contains the security update information for this software.
Security update file name | For Microsoft Word 2007: word2007-kb2880515-fullfile-x86-glb.exe |
For Microsoft Office Compatibility Pack: wordconv2007-kb2880513-fullfile-x86-glb.exe | |
Installation switches | See Microsoft Knowledge Base Article 912203 |
Restart requirement | In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart. To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart, see Microsoft Knowledge Base Article 887012. |
Removal information | Use Add or Remove Programs item in Control Panel. |
File information | For Microsoft Word 2007: See Microsoft Knowledge Base Article 2880515 |
For Microsoft Office Compatibility Pack: See Microsoft Knowledge Base Article 2880513 | |
Registry key verification | Not applicable |