Microsoft Security Bulletin MS13-008 – Out-Of-Band Critical Security Update for Internet Explorer (2799329)
This security update resolves one publicly disclosed vulnerability in Internet Explorer. The vulnerability could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. 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.
This security update is rated Critical for Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on Windows clients and Moderate for Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on Windows servers. Internet Explorer 9 and Internet Explorer 10 are not affected. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by modifying the way that Internet Explorer handles objects in memory. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.
This security update also addresses the vulnerability first described in Microsoft Security Advisory 2794220.
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. Customers who have not enabled automatic updating need to check for updates 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 immediately using update management software, or by checking for updates using the Microsoft Update service.
Known Issues. None
Affected and Non-Affected Software: see the Security Bulletin.
Some Frequently Asked Questions (FAQ) Related to This Security Update, for all FAQ’s see the Security Bulletin.
Is this update, MS13-008, a cumulative security update for Internet Explorer?
No. This security update, MS13-008, only addresses the vulnerability described in this bulletin.
Do I need to install the last cumulative security update for Internet Explorer, MS12-077?
Yes. In all cases MS13-008 protects customers from the vulnerability discussed in this bulletin. However, customers who have not installed the latest cumulative security update for Internet Explorer may experience compatibility issues after installing the MS13-008 update.
Customers need to ensure that the latest cumulative security update for Internet Explorer, MS12-077, is installed to avoid compatibility issues.
If I applied the automated Microsoft Fix it solution for Internet Explorer in Microsoft Security Advisory 2794220, do I need to undo the workaround before applying this update?
Customers who implemented the Microsoft Fix it solution, “MSHTML Shim Workaround,” in Microsoft Security Advisory 2794220, do not need to undo the Microsoft Fix it solution before applying this update.
However, since the workaround is no longer needed, customers may wish to undo the workaround after installing this update. See the vulnerability workarounds in this bulletin for more information on how to undo this workaround.
Where are the file information details?
Refer to the reference tables in the Security Update Deployment section for the location of the file information details.
Where are the hashes of the security updates?
The SHA1 and SHA2 hashes of the security updates can be used to verify the authenticity of downloaded security update packages. For the hash information pertaining to this update, see Microsoft Knowledge Base Article 2799329.
How are Server Core installations affected by the vulnerability addressed in this bulletin?
The vulnerability addressed by this update does not affect supported editions of Windows Server 2008, Windows Server 2008 R2, or Windows Server 2012 as indicated in the Non-Affected Software table, when installed using the Server Core installation option.
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