Microsoft Security Bulletin MS14-051 - Critical

Cumulative Security Update for Internet Explorer (2976627)

Published: August 12, 2014 | Updated: June 17, 2015

Version: 1.4

General Information

Executive Summary

This security update resolves one publicly disclosed and twenty-five privately reported vulnerabilities in Internet Explorer. The most severe of these vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited these vulnerabilities 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.

This security update is rated Critical for Internet Explorer 6 (IE 6), Internet Explorer 7 (IE 7), Internet Explorer 8 (IE 8), Internet Explorer 9 (IE 9), Internet Explorer 10 (IE 10), and Internet Explorer 11 (IE 11) on affected Windows clients, and Moderate for Internet Explorer 6 (IE 6), Internet Explorer 7 (IE 7), Internet Explorer 8 (IE 8), Internet Explorer 9 (IE 9), Internet Explorer 10 (IE 10), and Internet Explorer 11 (IE 11) on affected Windows servers. For more information, see the Affected and Non-Affected Software section.

The security update addresses the vulnerabilities by modifying the way that Internet Explorer handles objects in memory, and by adding additional permission validations to Internet Explorer. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry later in this bulletin.

Recommendation. Most customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871. For customers who do not have automatic updating enabled, the steps in Turn automatic updating on or off can be used to enable automatic updating.

For enterprise installations, or administrators and end users who want to install this security update manually (including customers who have not enabled automatic updating), Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service. The updates are also available via the download links in the Affected Software table in this bulletin.

For additional guidance, see the Detection and Deployment Tools and Guidance section in this bulletin.

Knowledge Base Article

  • Knowledge Base Article: 2976627
  • File Information: Yes
  • SHA1/SHA2 hashes: Yes
  • Known issues: Yes

Affected and Non-Affected Software

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 

Operating System Component Maximum Security Impact Aggregate Severity Rating Updates Replaced
Internet Explorer 6
Windows Server 2003 Service Pack 2 Internet Explorer 6  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Server 2003 x64 Edition Service Pack 2 Internet Explorer 6  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Server 2003 with SP2 for Itanium-based Systems Internet Explorer 6  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Internet Explorer 7
Windows Server 2003 Service Pack 2 Internet Explorer 7  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Server 2003 x64 Edition Service Pack 2 Internet Explorer 7  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Server 2003 with SP2 for Itanium-based Systems Internet Explorer 7  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Vista Service Pack 2 Internet Explorer 7  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Vista x64 Edition Service Pack 2 Internet Explorer 7  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Server 2008 for 32-bit Systems Service Pack 2 Internet Explorer 7  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Server 2008 for x64-based Systems Service Pack 2 Internet Explorer 7  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Server 2008 for Itanium-based Systems Service Pack 2 Internet Explorer 7  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Internet Explorer 8
Windows Server 2003 Service Pack 2 Internet Explorer 8  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Server 2003 x64 Edition Service Pack 2 Internet Explorer 8  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Vista Service Pack 2 Internet Explorer 8  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Vista x64 Edition Service Pack 2 Internet Explorer 8  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Server 2008 for 32-bit Systems Service Pack 2 Internet Explorer 8  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Server 2008 for x64-based Systems Service Pack 2 Internet Explorer 8  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows 7 for 32-bit Systems Service Pack 1 Internet Explorer 8  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows 7 for x64-based Systems Service Pack 1 Internet Explorer 8  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Server 2008 R2 for x64-based Systems Service Pack 1 Internet Explorer 8  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 Internet Explorer 8  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Internet Explorer 9
Windows Vista Service Pack 2 Internet Explorer 9  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Vista x64 Edition Service Pack 2 Internet Explorer 9  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Server 2008 for 32-bit Systems Service Pack 2 Internet Explorer 9  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows Server 2008 for x64-based Systems Service Pack 2 Internet Explorer 9  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows 7 for 32-bit Systems Service Pack 1 Internet Explorer 9  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows 7 for x64-based Systems Service Pack 1 Internet Explorer 9  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Server 2008 R2 for x64-based Systems Service Pack 1 Internet Explorer 9  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Internet Explorer 10
Windows 7 for 32-bit Systems Service Pack 1 Internet Explorer 10  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows 7 for x64-based Systems Service Pack 1 Internet Explorer 10  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Server 2008 R2 for x64-based Systems Service Pack 1 Internet Explorer 10  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows 8 for 32-bit Systems Internet Explorer 10  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows 8 for x64-based Systems Internet Explorer 10  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Server 2012 Internet Explorer 10  (2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows RT Internet Explorer 10[1]  (2976627) Remote Code Execution Critical 2962872 in MS14-037
Internet Explorer 11
Windows 7 for 32-bit Systems Service Pack 1 Internet Explorer 11 [2](2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows 7 for x64-based Systems Service Pack 1 Internet Explorer 11 [2](2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Server 2008 R2 for x64-based Systems Service Pack 1 Internet Explorer 11 [2](2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows 8.1 for 32-bit Systems Internet Explorer 11 [3](2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows 8.1 for x64-based Systems Internet Explorer 11 [3](2976627) Remote Code Execution Critical 2962872 in MS14-037
Windows Server 2012 R2 Internet Explorer 11 [3](2976627) Remote Code Execution Moderate 2962872 in MS14-037
Windows RT 8.1 Internet Explorer 11[1][3]  (2976627) Remote Code Execution Critical 2962872 in MS14-037

[1]This update is available via Windows Update.

[2]This update is for systems that have the 2929437 update installed. See the Update FAQ for more information.

[3]This update is for systems that have the 2919355 update installed. See the Update FAQ for more information.

Non-Applicable Software

Operating System Component
Server Core installation
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Not applicable
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Not applicable
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Not applicable
Windows Server 2012 (Server Core installation) Not applicable
Windows Server 2012 R2 (Server Core installation) Not applicable

Update FAQ

I am running Internet Explorer 11 on Windows 8.1, Windows Server 2012 R2, or Windows RT 8.1. Why am I not being offered the 2976627 update?
To be offered any security updates on Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2, the 2919355 update must be installed on the system.  For more information, see Microsoft Knowledge Base Article 2919355.

I am running Internet Explorer 11 on Windows 7 or Windows Server 2008 R2. Why am I not being offered the 2976627 update?
To be offered any security updates for Internet Explorer 11 on Windows 7 or Windows Server 2008 R2, update 2929437 must be installed on the system. For more information, see Microsoft Knowledge Base Article 2929437.

For Internet Explorer 11 are there any prerequisites for the 2976627 update?
Yes. Customers running Windows 8.1, Windows Server 2012 R2, or Windows RT 8.1 must first install the 2919355 update released in April, 2014 before installing the 2976627 update. For more information about the prerequisite update, see Microsoft Knowledge Base Article 2919355.

Customers running Internet Explorer 11 on Windows 7 or Windows Server 2008 R2, must first install the 2929437 update released in April, 2014 before installing the 2976627 update. For more information about this prerequisite update, see Microsoft Knowledge Base Article 2929437.

How are Server Core installations affected by the vulnerabilities addressed in this bulletin?
The vulnerabilities addressed by this update do not affect supported editions of Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, or Windows Server 2012 R2 as indicated in the Non-Applicable Software table, when installed using the Server Core installation option. For more information on this installation option, see the TechNet articles, Managing a Server Core Installation: Overview, Servicing a Server Core Installation, and Server Core and Full Server Integration Overview.

I am using an older release of the software discussed in this security bulletin. What should I do?
The affected software listed in this bulletin has been tested to determine which releases are affected. Other releases are past their support life cycle. For more information about the product lifecycle, see the Microsoft Support Lifecycle website.

It should be a priority for customers who have older releases of the software to migrate to supported releases to prevent potential exposure to vulnerabilities. To determine the support lifecycle for your software release, see Select a Product for Lifecycle Information. For more information about service packs for these software releases, see Service Pack Lifecycle Support Policy.

Customers who require custom support for older software must contact their Microsoft account team representative, their Technical Account Manager, or the appropriate Microsoft partner representative for custom support options. Customers without an Alliance, Premier, or Authorized Contract can contact their local Microsoft sales office. For contact information, see the Microsoft Worldwide Information website, select the country in the Contact Information list, and then click Go to see a list of telephone numbers. When you call, ask to speak with the local Premier Support sales manager. For more information, see the Microsoft Support Lifecycle Policy FAQ.

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 August bulletin summary. For more information, see Microsoft Exploitability Index.

In the following table: Where specified, Critical, Important, and Moderate values indicate severity ratings. For more information, see Security Bulletin Severity Rating System. Where specified, RCE (Remote Code Execution), EoP (Elevation of Privilege), and Security Feature Bypass indicate maximum impact.

For example, Windows Clients: Critical / RCE specifies that the vulnerability is Critical severity with impact of remote code execution for the affected version of Internet Explorer running on a Windows client operating system. Windows Servers: Moderate / RCE specifies that the vulnerability is Moderate severity with impact of remote code execution for the affected version of Internet Explorer running on a Windows server operating system. Windows Clients and Servers:Moderate / Security Feature Bypass specifies that the vulnerability is Moderate severity with impact of security feature bypass for the affected version of Internet Explorer running on either a Windows client or Windows server operating system.

Severity Ratings and Impact

CVE number Vulnerability Title Internet Explorer 6 Internet Explorer 7 Internet Explorer 8 Internet Explorer 9 Internet Explorer 10 Internet Explorer 11
CVE-2014-2774 Internet Explorer Memory Corruption Vulnerability Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-2784 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-2796 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-2808 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-2810 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-2811 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-2817 Internet Explorer Elevation of Privilege Vulnerability Windows Servers:\ Moderate / EoP Windows Clients:\ Important / EoP\ \ Windows Servers:\ Moderate / EoP Windows Clients:\ Important / EoP\ \ Windows Servers:\ Moderate / EoP Windows Clients:\ Important / EoP\ \ Windows Servers:\ Moderate / EoP Windows Clients:\ Important / EoP\ \ Windows Servers:\ Moderate / EoP Windows Clients:\ Important / EoP\ \ Windows Servers:\ Moderate / EoP
CVE-2014-2818 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Not applicable
CVE-2014-2819 Internet Explorer Elevation of Privilege Vulnerability Not applicable Windows Clients:\ Important / EoP\ \ Windows Servers:\ Moderate / EoP Windows Clients:\ Important / EoP\ \ Windows Servers:\ Moderate / EoP Windows Clients:\ Important / EoP\ \ Windows Servers:\ Moderate / EoP Windows Clients:\ Important / EoP\ \ Windows Servers:\ Moderate / EoP Windows Clients:\ Important / EoP\ \ Windows Servers:\ Moderate / EoP
CVE-2014-2820 Internet Explorer Memory Corruption Vulnerability Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE number Vulnerability Title Internet Explorer 6 Internet Explorer 7 Internet Explorer 8 Internet Explorer 9 Internet Explorer 10 Internet Explorer 11
CVE-2014-2821 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Not applicable Not applicable
CVE-2014-2822 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-2823 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-2824 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Not applicable Not applicable Not applicable
CVE-2014-2825 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-2826 Internet Explorer Memory Corruption Vulnerability Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-2827 Internet Explorer Memory Corruption Vulnerability Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-4050 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-4051 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-4052 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Not applicable
CVE number Vulnerability Title Internet Explorer 6 Internet Explorer 7 Internet Explorer 8 Internet Explorer 9 Internet Explorer 10 Internet Explorer 11
CVE-2014-4055 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-4056 Internet Explorer Memory Corruption Vulnerability Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Not applicable
CVE-2014-4057 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-4058 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-4063 Internet Explorer Memory Corruption Vulnerability Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-4067 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-8985 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-4145 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE
CVE-2014-6354 Internet Explorer Memory Corruption Vulnerability Not applicable Not applicable Not applicable Not applicable Not applicable Windows Clients:\ Critical / RCE\ \ Windows Servers:\ Moderate / RCE

Multiple Internet Explorer Elevation of Privilege Vulnerabilities

Multiple elevation of privilege vulnerabilities exist in Internet Explorer. An attacker who successfully exploited these vulnerabilities could elevate privileges in affected versions of Internet Explorer. These vulnerabilities by themselves do not allow arbitrary code to be run. However, these vulnerabilities could be used in conjunction with another vulnerability (e.g., a remote code execution vulnerability) that could take advantage of the elevated privileges when running arbitrary code.

To view any of these vulnerabilities as a standard entry in the Common Vulnerabilities and Exposures list, click a link in the following table:

Vulnerability title CVE number
Internet Explorer Elevation of Privilege Vulnerability CVE-2014-2817
Internet Explorer Elevation of Privilege Vulnerability CVE-2014-2819

Mitigating Factors

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:

  • In a web-based attack scenario, an attacker could take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that is used to exploit these vulnerabilities. In all cases, however, 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 getting them to open an attachment sent through email.
  • These vulnerabilities by themselves do not allow arbitrary code to be run. The vulnerabilities would have to 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 these vulnerabilities to cause the arbitrary code to run at a medium integrity level (permissions of the current user).

Workarounds

Microsoft has not identified any workarounds for these vulnerabilities.

FAQ

What is the scope of the vulnerabilities? 
These are elevation of privilege vulnerabilities.

What causes the vulnerabilities? 
These vulnerabilities are caused when Internet Explorer does not properly validate permissions under specific conditions, potentially allowing script to be run with elevated privileges.

What might an attacker use these vulnerabilities to do? 
An attacker who successfully exploited these vulnerabilities could elevate privileges in affected versions of Internet Explorer.

These vulnerabilities by themselves do not allow arbitrary code to be run. However, these vulnerabilities could be used in conjunction with another vulnerability (e.g., a remote code execution vulnerability) that could take advantage of the elevated privileges when running arbitrary code.

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 these vulnerabilities to cause the arbitrary code to run at a medium integrity level (permissions of the current user).

How could an attacker exploit these vulnerabilities? 
In a web-based attack scenario, an attacker could host a website that is used to attempt to exploit these vulnerabilities. In addition, compromised websites and websites that accept or host user-provided content could contain specially crafted content that could exploit these vulnerabilities. In all cases, however, 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. For example, an attacker could trick users into clicking a link that takes them to the attacker's site.

What systems are primarily at risk from these vulnerabilities? 
Systems where Internet Explorer is used frequently, such as workstations or terminal servers, are at the most risk from these vulnerabilities.

What does the update do? 
The update addresses the vulnerabilities by adding additional permission validations to Internet Explorer.

When this security bulletin was issued, had these vulnerabilities been publicly disclosed? 
Consult the following table:

CVE number Publicly Disclosed
CVE-2014-2817 No
CVE-2014-2819 Yes

When this security bulletin was issued, had Microsoft received any reports that these vulnerabilities are being exploited? 
Consult the following table:

CVE number Exploited
CVE-2014-2817 Yes
CVE-2014-2819 No

Multiple Memory Corruption Vulnerabilities in Internet Explorer

Remote code execution vulnerabilities exist when Internet Explorer improperly accesses objects in memory. These vulnerabilities could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user.

To view any of these vulnerabilities as a standard entry in the Common Vulnerabilities and Exposures list, click a link in the following table:

Vulnerability title CVE number
Internet Explorer Memory Corruption Vulnerability CVE-2014-2774
Internet Explorer Memory Corruption Vulnerability CVE-2014-2784
Internet Explorer Memory Corruption Vulnerability CVE-2014-2796
Internet Explorer Memory Corruption Vulnerability CVE-2014-2808
Internet Explorer Memory Corruption Vulnerability CVE-2014-2810
Internet Explorer Memory Corruption Vulnerability CVE-2014-2811
Internet Explorer Memory Corruption Vulnerability CVE-2014-2818
Internet Explorer Memory Corruption Vulnerability CVE-2014-2820
Internet Explorer Memory Corruption Vulnerability CVE-2014-2821
Internet Explorer Memory Corruption Vulnerability CVE-2014-2822
Internet Explorer Memory Corruption Vulnerability CVE-2014-2823
Internet Explorer Memory Corruption Vulnerability CVE-2014-2824
Internet Explorer Memory Corruption Vulnerability CVE-2014-2825
Internet Explorer Memory Corruption Vulnerability CVE-2014-2826
Internet Explorer Memory Corruption Vulnerability CVE-2014-2827
Internet Explorer Memory Corruption Vulnerability CVE-2014-4050
Internet Explorer Memory Corruption Vulnerability CVE-2014-4051
Internet Explorer Memory Corruption Vulnerability CVE-2014-4052
Internet Explorer Memory Corruption Vulnerability CVE-2014-4055
Internet Explorer Memory Corruption Vulnerability CVE-2014-4056
Internet Explorer Memory Corruption Vulnerability CVE-2014-4057
Internet Explorer Memory Corruption Vulnerability CVE-2014-4058
Internet Explorer Memory Corruption Vulnerability CVE-2014-4063
Internet Explorer Memory Corruption Vulnerability CVE-2014-4067
Internet Explorer Memory Corruption Vulnerability CVE-2014-8985
Internet Explorer Memory Corruption Vulnerability CVE-2014-4145
Internet Explorer Memory Corruption Vulnerability CVE-2014-6354

Mitigating Factors

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:

  • In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit these vulnerabilities through Internet Explorer, and then convince a user to view the website. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit these vulnerabilities. In all cases, however, 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 getting them to open an attachment sent through email.
  • An attacker who successfully exploited these vulnerabilities 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.
  • By default, all supported versions of Microsoft Outlook, Microsoft Outlook Express, and Windows Mail open HTML email messages in the Restricted sites zone. The Restricted sites zone, which disables script and ActiveX controls, helps reduce the risk of an attacker being able to use these vulnerabilities to execute malicious code. If a user clicks a link in an email message, the user could still be vulnerable to exploitation of these vulnerabilities through the web-based attack scenario.
  • By default, Internet Explorer on Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 runs in a restricted mode that is known as Enhanced Security Configuration. This mode mitigates these vulnerabilities. See the FAQ section for these vulnerabilities for more information about Internet Explorer Enhanced Security Configuration.

Workarounds

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:

  • Configure Internet Explorer to prompt before running Active Scripting or to disable Active Scripting in the Internet and Local intranet security zone
    You can help protect against exploitation of these vulnerabilities by changing your settings to prompt before running Active Scripting or to disable Active Scripting in the Internet and Local intranet security zone. To do this, perform the following steps:

    1. In Internet Explorer, click Internet Options on the Tools menu.
    2. Click the Security tab.
    3. Click Internet, and then click Custom Level.
    4. Under Settings, in the Scripting section, under Active Scripting, click Prompt or Disable, and then click OK.
    5. Click Local intranet, and then click Custom Level.
    6. Under Settings, in the Scripting section, under Active Scripting, click Prompt or Disable, and then click OK.
    7. Click OK two times to return to Internet Explorer.

    Note Disabling Active Scripting in the Internet and Local intranet security zones may cause some websites to work incorrectly. If you have difficulty using a website after you change this setting, and you are sure the site is safe to use, you can add that site to your list of trusted sites. This will allow the site to work correctly.

    Impact of workaround. There are side effects to prompting before running Active Scripting. Many websites that are on the Internet or on an intranet use Active Scripting to provide additional functionality. For example, an online e-commerce site or banking site may use Active Scripting to provide menus, ordering forms, or even account statements. Prompting before running Active Scripting is a global setting that affects all Internet and intranet sites. You will be prompted frequently when you enable this workaround. For each prompt, if you feel you trust the site that you are visiting, click Yes to run Active Scripting. If you do not want to be prompted for all these sites, use the steps outlined in "Add sites that you trust to the Internet Explorer Trusted sites zone".

    Add sites that you trust to the Internet Explorer Trusted sites zone

    After you set Internet Explorer to require a prompt before it runs ActiveX controls and Active Scripting in the Internet zone and in the Local intranet zone, you can add sites that you trust to the Internet Explorer Trusted sites zone. This will allow you to continue to use trusted websites exactly as you do today, while helping to protect you from this attack on untrusted sites. We recommend that you add only sites that you trust to the Trusted sites zone.

    To do this, perform the following steps:

    1. In Internet Explorer, click Tools, click Internet Options, and then click the Security tab.
    2. In the Select a web content zone to specify its current security settings box, click Trusted Sites, and then click Sites.
    3. If you want to add sites that do not require an encrypted channel, click to clear the Require server verification (https:) for all sites in this zone check box.
    4. In the Add this website to the zone box, type the URL of a site that you trust, and then click Add.
    5. Repeat these steps for each site that you want to add to the zone.
    6. Click OK two times to accept the changes and return to Internet Explorer.

    Note Add any sites that you trust not to take malicious action on your system. Two in particular that you may want to add are *.windowsupdate.microsoft.com and *.update.microsoft.com. These are the sites that will host the update, and it requires an ActiveX Control to install the update.

  • Set Internet and Local intranet security zone settings to "High" to block ActiveX Controls and Active Scripting in these zones
    You can help protect against exploitation of these vulnerabilities by changing your settings for the Internet security zone to block ActiveX controls and Active Scripting. You can do this by setting your browser security to High.

    To raise the browsing security level in Internet Explorer, perform the following steps:

    1. On the Internet Explorer Tools menu, click Internet Options.
    2. In the Internet Options dialog box, click the Security tab, and then click Internet.
    3. Under Security level for this zone, move the slider to High. This sets the security level for all websites you visit to High.
    4. Click Local intranet.
    5. Under Security level for this zone, move the slider to High. This sets the security level for all websites you visit to High.
    6. Click OK to accept the changes and return to Internet Explorer.

    Note If no slider is visible, click Default Level, and then move the slider to High.

    Note Setting the level to High may cause some websites to work incorrectly. If you have difficulty using a website after you change this setting, and you are sure the site is safe to use, you can add that site to your list of trusted sites. This will allow the site to work correctly even with the security setting set to High.

    Impact of workaround. There are side effects to blocking ActiveX Controls and Active Scripting. Many websites that are on the Internet or on an intranet use ActiveX or Active Scripting to provide additional functionality. For example, an online e-commerce site or banking site may use ActiveX Controls to provide menus, ordering forms, or even account statements. Blocking ActiveX Controls or Active Scripting is a global setting that affects all Internet and intranet sites. If you do not want to block ActiveX Controls or Active Scripting for such sites, use the steps outlined in "Add sites that you trust to the Internet Explorer Trusted sites zone".

    Add sites that you trust to the Internet Explorer Trusted sites zone

    After you set Internet Explorer to block ActiveX controls and Active Scripting in the Internet zone and in the Local intranet zone, you can add sites that you trust to the Internet Explorer Trusted sites zone. This will allow you to continue to use trusted websites exactly as you do today, while helping to protect yourself from this attack on untrusted sites. We recommend that you add only sites that you trust to the Trusted sites zone.

    To do this, perform the following steps:

    1. In Internet Explorer, click Tools, click Internet Options, and then click the Security tab.
    2. In the Select a web content zone to specify its current security settings box, click Trusted Sites, and then click Sites.
    3. If you want to add sites that do not require an encrypted channel, click to clear the Require server verification (https:) for all sites in this zone check box.
    4. In the Add this website to the zone box, type the URL of a site that you trust, and then click Add.
    5. Repeat these steps for each site that you want to add to the zone.
    6. Click OK two times to accept the changes and return to Internet Explorer.

    Note Add any sites that you trust not to take malicious action on your system. Two in particular that you may want to add are *.windowsupdate.microsoft.com and *.update.microsoft.com. These are the sites that will host the update, and it requires an ActiveX Control to install the update.

FAQ

What is the scope of the vulnerabilities? 
These are remote code execution vulnerabilities in the context of the current user.

What causes the vulnerabilities? 
When Internet Explorer improperly accesses an object in memory, it could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user.

What might an attacker use the vulnerabilities to do? 
An attacker who successfully exploited these vulnerabilities could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited these vulnerabilities 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.

How could an attacker exploit the vulnerabilities? 
An attacker could host a specially crafted website that is designed to exploit these vulnerabilities through Internet Explorer, and then convince a user to view the website. The attacker could also take advantage of compromised websites and websites that accept or host user-provided content or advertisements. These websites could contain specially crafted content that could exploit these vulnerabilities. In all cases, however, 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 getting them to open an attachment sent through email.

What systems are primarily at risk from the vulnerabilities? 
Systems where Internet Explorer is used frequently, such as workstations or terminal servers, are at the most risk from these vulnerabilities.

I am running Internet Explorer on Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, or Windows Server 2012 R2. Does this mitigate these vulnerabilities? 
Yes. By default, Internet Explorer on Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 runs in a restricted mode that is known as Enhanced Security Configuration. Enhanced Security Configuration is a group of preconfigured settings in Internet Explorer that can reduce the likelihood of a user or administrator downloading and running specially crafted web content on a server. This is a mitigating factor for websites that you have not added to the Internet Explorer Trusted sites zone.

Does EMET help mitigate attacks that could attempt to exploit these vulnerabilities? 
Yes. The Enhanced Mitigation Experience Toolkit (EMET) enables users to manage security mitigation technologies that help make it more difficult for attackers to exploit vulnerabilities in a given piece of software. EMET helps to mitigate these vulnerabilities in Internet Explorer on systems where EMET is installed and configured to work with Internet Explorer.

For more information about EMET, see The Enhanced Mitigation Experience Toolkit.

What does the update do? 
The update addresses the vulnerabilities by modifying the way that Internet Explorer handles objects in memory.

When this security bulletin was issued, had these vulnerabilities been publicly disclosed? 
Consult the following table:

CVE number Publicly Disclosed
CVE-2014-2774 No
CVE-2014-2784 No
CVE-2014-2796 No
CVE-2014-2808 No
CVE-2014-2810 No
CVE-2014-2811 No
CVE-2014-2818 No
CVE-2014-2820 No
CVE-2014-2821 No
CVE-2014-2822 No
CVE-2014-2823 No
CVE-2014-2824 No
CVE-2014-2825 No
CVE-2014-2826 No
CVE-2014-2827 No
CVE-2014-4050 No
CVE-2014-4051 No
CVE-2014-4052 No
CVE-2014-4055 No
CVE-2014-4056 No
CVE-2014-4057 No
CVE-2014-4058 No
CVE-2014-4063 No
CVE-2014-4067 No
CVE-2014-8985 No
CVE-2014-4145 No
CVE-2014-6354 No

When this security bulletin was issued, had Microsoft received any reports that these vulnerabilities are being exploited?
Consult the following table:

CVE number Exploited
CVE-2014-2774 No
CVE-2014-2784 No
CVE-2014-2796 No
CVE-2014-2808 No
CVE-2014-2810 No
CVE-2014-2811 No
CVE-2014-2818 No
CVE-2014-2820 No
CVE-2014-2821 No
CVE-2014-2822 No
CVE-2014-2823 No
CVE-2014-2824 No
CVE-2014-2825 No
CVE-2014-2826 No
CVE-2014-2827 No
CVE-2014-4050 No
CVE-2014-4051 No
CVE-2014-4052 No
CVE-2014-4055 No
CVE-2014-4056 No
CVE-2014-4057 No
CVE-2014-4058 No
CVE-2014-4063 No
CVE-2014-4067 No
CVE-2014-8985 No
CVE-2014-4145 No
CVE-2014-6354 No

Detection and Deployment Tools and Guidance

Several resources are available to help administrators deploy security updates. 

  • Microsoft Baseline Security Analyzer (MBSA) lets administrators scan local and remote systems for missing security updates and common security misconfigurations. 
  • Windows Server Update Services (WSUS), Systems Management Server (SMS), and System Center Configuration Manager help administrators distribute security updates. 
  • The Update Compatibility Evaluator components included with Application Compatibility Toolkit aid in streamlining the testing and validation of Windows updates against installed applications. 

For information about these and other tools that are available, see Security Tools for IT Pros

Security Update Deployment

Windows Server 2003 (all editions)

Reference Table

The following table contains the security update information for this software.

Security update file names For Internet Explorer 6 for all supported 32-bit editions of Windows Server 2003:\ WindowsServer2003-KB2976627-x86-ENU.exe
  For Internet Explorer 6 for all supported x64-based editions of Windows Server 2003:\ WindowsServer2003-KB2976627-x64-ENU.exe
  For Internet Explorer 6 for all supported Itanium-based editions of Windows Server 2003:\ WindowsServer2003-KB2976627-ia64-ENU.exe
  For Internet Explorer 7 for all supported 32-bit editions of Windows Server 2003:\ IE7-WindowsServer2003-KB2976627-x86-ENU.exe
  For Internet Explorer 7 for all supported x64-based editions of Windows Server 2003:\ IE7-WindowsServer2003-KB2976627-x64-ENU.exe
  For Internet Explorer 7 for all supported Itanium-based editions of Windows Server 2003:\ IE7-WindowsServer2003-KB2976627-ia64-ENU.exe
  For Internet Explorer 8 for all supported 32-bit editions of Windows Server 2003:\ IE8-WindowsServer2003-KB2976627-x86-ENU.exe
  For Internet Explorer 8 for all supported x64-based editions of Windows Server 2003:\ IE8-WindowsServer2003-KB2976627-x64-ENU.exe
Installation switches See Microsoft Knowledge Base Article 262841
Update log file For Internet Explorer 6 for all supported 32-bit editions, x64-based editions, and Itanium-based editions of Windows Server 2003:\ KB2976627.log
  For Internet Explorer 7 for all supported 32-bit editions, x64-based editions, and Itanium-based editions of Windows Server 2003:\ KB2976627-IE7.log
  For Internet Explorer 8 for all supported 32-bit editions and x64-based editions of Windows Server 2003:\ KB2976627-IE8.log
Restart requirement Yes, you must restart your system after you apply this security update.
Removal information For Internet Explorer 6 for all supported 32-bit editions, x64-based editions, and Itanium-based editions of Windows Server 2003:\ Use Add or Remove Programs item in Control Panel or the Spuninst.exe utility located in the Use the Spuninst.exe utility, located in the %Windir%$NTUninstallKB2976627$\Spuninst folder
  For Internet Explorer 7 for all supported 32-bit editions, x64-based editions, and Itanium-based editions of Windows Server 2003:\ Use Add or Remove Programs item in Control Panel or the Spuninst.exe utility located in the %Windir%\ie7updates\KB2976627-IE7\spuninst folder
  For Internet Explorer 8 for all supported 32-bit editions and x64-based editions of Windows Server 2003:\ Use Add or Remove Programs item in Control Panel or the Spuninst.exe utility located in the %Windir%\ie8updates\KB2976627-IE8\spuninst folder
File information See Microsoft Knowledge Base Article 2976627
Registry key verification For Internet Explorer 6 for all supported 32-bit editions, x64-based editions, and Itanium-based editions of Windows Server 2003:\ HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Server 2003\SP3\KB2976627\Filelist
  For Internet Explorer 7 for all supported 32-bit editions, x64-based editions, and Itanium-based editions of Windows Server 2003:\ HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Server 2003\SP0\KB2976627-IE7\Filelist
  For Internet Explorer 8 for all supported 32-bit editions and x64-based editions of Windows Server 2003:\ HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Server 2003\SP0\KB2976627-IE8\Filelist

 

Windows Vista (all editions)

Reference Table

The following table contains the security update information for this software.

Security update file names For Internet Explorer 7 in all supported 32-bit editions of Windows Vista:\ Windows6.0-KB2976627-x86.msu
  For Internet Explorer 7 in all supported x64-based editions of Windows Vista:\ Windows6.0-KB2976627-x64.msu
  For Internet Explorer 8 in all supported 32-bit editions of Windows Vista:\ IE8-Windows6.0-KB2976627-x86.msu
  For Internet Explorer 8 in all supported x64-based editions of Windows Vista:\ IE8-Windows6.0-KB2976627-x64.msu
  For Internet Explorer 9 for all supported 32-bit editions of Windows Vista:\ IE9-Windows6.0-KB2976627-x86.msu
  For Internet Explorer 9 for all supported x64-based editions of Windows Vista:\ IE9-Windows6.0-KB2976627-x64.msu
Installation switches See Microsoft Knowledge Base Article 934307
Restart requirement Yes, you must restart your system after you apply this security update.
Removal information WUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates and select from the list of updates.
File information See Microsoft Knowledge Base Article 2976627
Registry key verification Note A registry key does not exist to validate the presence of this update.

 

Windows Server 2008 (all editions)

Reference Table

The following table contains the security update information for this software.

Security update file names For Internet Explorer 7 in all supported 32-bit editions of Windows Server 2008:\ Windows6.0-KB2976627-x86.msu
  For Internet Explorer 7 in all supported x64-based editions of Windows Server 2008:\ Windows6.0-KB2976627-x64.msu
  For Internet Explorer 7 in all supported Itanium-based editions of Windows Server 2008:\ Windows6.0-KB2976627-ia64.msu
  For Internet Explorer 8 in all supported 32-bit editions of Windows Server 2008:\ IE8-Windows6.0-KB2976627-x86.msu
  For Internet Explorer 8 in all supported x64-based editions of Windows Server 2008:\ IE8-Windows6.0-KB2976627-x64.msu
  For Internet Explorer 9 for all supported 32-bit editions of Windows Server 2008:\ IE9-Windows6.0-KB2976627-x86.msu
  For Internet Explorer 9 in all supported x64-based editions of Windows Server 2008:\ IE9-Windows6.0-KB2976627-x64.msu
Installation switches See Microsoft Knowledge Base Article 934307
Restart requirement Yes, you must restart your system after you apply this security update.
Removal information WUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates and select from the list of updates.
File information See Microsoft Knowledge Base Article 2976627
Registry key verification Note A registry key does not exist to validate the presence of this update.

 

Windows 7 (all editions)

Reference Table

The following table contains the security update information for this software.

Security update file name For Internet Explorer 8 in all supported 32-bit editions of Windows 7:\ Windows6.1-KB2976627-x86.msu
  For Internet Explorer 8 in all supported x64-based editions of Windows 7:\ Windows6.1-KB2976627-x64.msu
  For Internet Explorer 9 for all supported 32-bit editions of Windows 7:\ IE9-Windows6.1-KB2976627-x86.msu
  For Internet Explorer 9 for all supported x64-based editions of Windows 7:\ IE9-Windows6.1-KB2976627-x64.msu
  For Internet Explorer 10 for Windows 7 for 32-bit Systems Service Pack 1:\ IE10-Windows6.1-KB2976627-x86.msu
  For Internet Explorer 10 for Windows 7 for x64-based Systems Service Pack 1:\ IE10-Windows6.1-KB2976627-x64.msu
  For Internet Explorer 11 for Windows 7 for 32-bit Systems Service Pack 1:\ IE11-Windows6.1-KB2976627-x86.msu
  For Internet Explorer 11 for Windows 7 for x64-based Systems Service Pack 1:\ IE11-Windows6.1-KB2976627-x64.msu
Installation switches See Microsoft Knowledge Base Article 934307
Restart requirement Yes, you must restart your system after you apply this security update.
Removal information To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates and select from the list of updates.
File information See Microsoft Knowledge Base Article 2976627
Registry key verification Note A registry key does not exist to validate the presence of this update.

 

Windows Server 2008 R2 (all editions)

Reference Table

The following table contains the security update information for this software.

Security update file name For Internet Explorer 8 in all supported x64-based editions of Windows Server 2008 R2:\ Windows6.1-KB2976627-x64.msu
  For Internet Explorer 8 in all supported Itanium-based editions of Windows Server 2008 R2:\ Windows6.1-KB2976627-ia64.msu
  For Internet Explorer 9 for all supported x64-based editions of Windows Server 2008 R2:\ IE9-Windows6.1-KB2976627-x64.msu
  For Internet Explorer 10 for Windows Server 2008 R2 for x64-based Systems Service Pack 1:\ IE10-Windows6.1-KB2976627-x64.msu
  For Internet Explorer 11 for Windows Server 2008 R2 for x64-based Systems Service Pack 1:\ IE11-Windows6.1-KB2976627-x64.msu
Installation switches See Microsoft Knowledge Base Article 934307
Restart requirement Yes, you must restart your system after you apply this security update.
Removal information To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates and select from the list of updates.
File information See Microsoft Knowledge Base Article 2976627
Registry key verification Note A registry key does not exist to validate the presence of this update.

 

Windows 8 and Windows 8.1 (all editions)

Reference Table

The following table contains the security update information for this software.

Security update file name For Internet Explorer 10 in all supported 32-bit editions of Windows 8:\ Windows8-RT-KB2976627-x86.msu
  For Internet Explorer 10 in all supported x64-based editions of Windows 8:\ Windows8-RT-KB2976627-x64.msu
  For Internet Explorer 11 in all supported 32-bit editions of Windows 8.1:\ Windows8.1-KB2976627-x86.msu
  For Internet Explorer 11 in all supported x64-based editions of Windows 8.1:\ Windows8.1-KB2976627-x64.msu
Installation switches See Microsoft Knowledge Base Article 934307
Restart requirement Yes, you must restart your system after you apply this security update.
Removal information To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates**.**
File information See Microsoft Knowledge Base Article 2976627
Registry key verification Note A registry key does not exist to validate the presence of this update.

 

Windows Server 2012 and Windows Server 2012 R2 (all editions)

Reference Table

The following table contains the security update information for this software.

Security update file name For Internet Explorer 10 in all supported editions of Windows Server 2012:\ Windows8-RT-KB2976627-x64.msu
  For Internet Explorer 11 in all supported editions of Windows Server 2012 R2:\ Windows8.1-KB2976627-x64.msu
Installation switches See Microsoft Knowledge Base Article 934307
Restart requirement Yes, you must restart your system after you apply this security update.
Removal information To uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File information See Microsoft Knowledge Base Article 2976627
Registry key verification Note A registry key does not exist to validate the presence of this update.

 

Windows RT and Windows RT 8.1 (all editions)

Reference Table

The following table contains the security update information for this software.

Deployment This update is available via Windows Update.
Restart Requirement Yes, you must restart your system after you apply this security update.
Removal Information Click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File information Not applicable

 

Acknowledgments

Microsoft thanks the following for working with us to help protect customers:

  • AbdulAziz Hariri of HP's Zero Day Initiative for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2774)
  • Yujie Wen of Qihoo 360 for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2784)
  • Bo Qu of Palo Alto Networks for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2796)
  • Chen Zhang (demi6od) of NSFOCUS Security Team for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2808)
  • Chen Zhang (demi6od) of NSFOCUS Security Team for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2810)
  • IronRock, working with VeriSign iDefense Labs, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2811)
  • James Forshaw of Context Information Security for reporting the Internet Explorer Elevation of Privilege Vulnerability (CVE-2014-2817)
  • AbdulAziz Hariri of HP's Zero Day Initiative for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2818)
  • Zeguang Zhao of Team509 and Liang Chen of KeenTeam (@K33nTeam), working with HP's Zero Day Initiative, for reporting the Internet Explorer Elevation of Privilege Vulnerability (CVE-2014-2819)
  • Arthur Gerkis, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2820)
  • Bo Qu of Palo Alto Networks for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2821)
  • Bo Qu of Palo Alto Networks for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2822)
  • Chen Zhang (demi6od) of NSFOCUS Security Team for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2823)
  • Yuki Chen of Qihoo 360 for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2824)
  • Chen Zhang (demi6od) of NSFOCUS Security Team for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2825)
  • Chen Zhang (demi6od) of NSFOCUS Security Team for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2826)
  • Simon Zuckerbraun of HP's Zero Day Initiative for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-2827)
  • Omair, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4050)
  • Peter 'corelanc0d3r' Van Eeckhoutte of Corelan, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4051)
  • An anonymous researcher, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4052)
  • Simon Zuckerbraun of HP's Zero Day Initiative for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4055)
  • Peter 'corelanc0d3r' Van Eeckhoutte of Corelan, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4056)
  • Yuki Chen of Trend Micro, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4057)
  • Sky, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4058)
  • An anonymous researcher, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4063)
  • Wei Wang of VulnHunt for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4067)
  • lokihardt@ASRT, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4067)
  • Omair, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-4145)
  • Omair, working with HP's Zero Day Initiative, for reporting the Internet Explorer Memory Corruption Vulnerability (CVE-2014-6354)

Other Information

Microsoft Active Protections Program (MAPP)

To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please go to the active protections websites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.

Support

How to obtain help and support for this security update

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 (August 12, 2014): Bulletin published.
  • V1.1 (October 8, 2014): Added CVE-2014-4145 as a vulnerability addressed by this update. This is an informational change only. Customers who have already successfully installed the update do not have to take any action.
  • V1.2 (December 19, 2014): Added CVE-2014-6354 as a vulnerability addressed by this update. This is an informational change only. Customers who have already successfully installed the update do not have to take any action.
  • V1.3 (June 3, 2015): Added CVE-2014-4078 as a vulnerability addressed by this update. This is an informational change only. Customers who have already successfully installed the update do not have to take any action.
  • V1.4 (June 17, 2015): Replaced CVE number CVE-2014-4078 with CVE number CVE-2014-8985. This is an informational change only. The CVE description was not changed. Customers who have already successfully installed the update do not need to take any action.

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