Microsoft Security Bulletin MS16-074 - Important

• 10/11/2017
• 9 minutes to read
• Contributors
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Security Update for Microsoft Graphics Component (3164036)

Published: June 14, 2016 | Updated: June 15, 2016

Version: 1.1

Executive Summary

This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow elevation of privilege if a user opens a specially crafted application.

This security update is rated Important for all supported releases of Microsoft Windows. For more information, see the Affected Software and Vulnerability Severity Ratings section.

The security update addresses the vulnerabilities by correcting how:

• The Windows Graphics Component (GDI32.dll) handles objects in memory
• The Windows kernel-mode driver (Win32k.sys) handles objects in memory and helps to prevent unintended elevation of privilege from user-mode
• The Adobe Type Manager Font Driver (ATMFD.dll) handles objects in memory

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

For more information about this update, see Microsoft Knowledge Base Article 3164036.

Affected Software and Vulnerability Severity Ratings

The following software versions or editions are affected. Versions or editions that are not listed are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see Microsoft Support Lifecycle.

The severity ratings indicated for each affected software 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 June bulletin summary.

^[2]Windows 10 updates are cumulative. The monthly security release includes all security fixes for vulnerabilities that affect Windows 10, in addition to non-security updates. The updates are available via the Microsoft Update Catalog.

Note Windows Server 2016 Technical Preview 5 is affected. Customers running this operating system are encouraged to apply the update, which is available via Windows Update.

*The Updates Replaced column shows only the latest update in any chain of superseded updates. For a comprehensive list of updates replaced, go to the Microsoft Update Catalog, search for the update KB number, and then view update details (updates replaced information is provided on the Package Details tab).

Update FAQ

Does this update contain any additional security-related changes to functionality?
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.

Vulnerability Information

Windows Graphics Component Information Disclosure Vulnerability – CVE-2016-3216

An information disclosure vulnerability exists when the Windows Graphics Component (GDI32.dll) fails to properly handle objects in memory, allowing an attacker to retrieve information that could lead to an Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited this vulnerability could cause an information disclosure to bypass the ASLR security feature that protects users from a broad class of vulnerabilities.

The security feature bypass itself does not allow arbitrary code execution. However, an attacker could use the ASLR bypass vulnerability in conjunction with another vulnerability, such as a remote code execution vulnerability, that could take advantage of the ASLR bypass to run arbitrary code.

To exploit this vulnerability, an attacker could convince a use to run a specially crafted application. The security update addresses the vulnerability by correcting how the Windows Graphics Component handles addresses in memory.

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