Microsoft Security Advisory 4022344
Security Update for Microsoft Malware Protection Engine
Published: May 8, 2017 | Updated: May 12, 2017
Version: 1.2
Executive Summary
Microsoft is releasing this security advisory to inform customers that an update to the Microsoft Malware Protection Engine addresses a security vulnerability that was reported to Microsoft.
The update addresses a vulnerability that could allow remote code execution if the Microsoft Malware Protection Engine scans a specially crafted file. An attacker who successfully exploited this vulnerability could execute arbitrary code in the security context of the LocalSystem account and take control of the system.
The Microsoft Malware Protection Engine ships with several Microsoft antimalware products. See the Affected Software section for a list of affected products. Updates to the Microsoft Malware Protection Engine are installed along with the updated malware definitions for the affected products. Administrators of enterprise installations should follow their established internal processes to ensure that the definition and engine updates are approved in their update management software, and that clients consume the updates accordingly.
Typically, no action is required of enterprise administrators or end users to install updates for the Microsoft Malware Protection Engine, because the built-in mechanism for the automatic detection and deployment of updates will apply the update within 48 hours of release. The exact time frame depends on the software used, Internet connection, and infrastructure configuration.
The information in this advisory is also available in the Security Update Guide referenced by CVE-2017-0290.
Advisory Details
Issue References
For more information about this issue, see the following references:
**References** | **Identification** |
**Last version of the Microsoft Malware Protection Engine affected by this vulnerability** | Version 1.1.13701.0 |
**First version of the Microsoft Malware Protection Engine with this vulnerability addressed** | Version 1.1.13704.0 |
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.
**Antimalware Software** | **Microsoft Malware Protection Engine Remote Code Execution Vulnerability- CVE-2017-0290** |
Microsoft Forefront Endpoint Protection 2010 | **Critical** Remote Code Execution |
Microsoft Endpoint Protection | **Critical** Remote Code Execution |
Microsoft System Center Endpoint Protection | **Critical** Remote Code Execution |
Microsoft Security Essentials | **Critical** Remote Code Execution |
Windows Defender for Windows 7 | **Critical** Remote Code Execution |
Windows Defender for Windows 8.1 | **Critical** Remote Code Execution |
Windows Defender for Windows RT 8.1 | **Critical** Remote Code Execution |
Windows Defender for Windows 10, Windows 10 1511, Windows 10 1607, Windows Server 2016, Windows 10 1703 | **Critical** Remote Code Execution |
Windows Intune Endpoint Protection | **Critical** Remote Code Execution |
Microsoft Exchange Server 2013 | **Critical** Remote Code Execution |
Microsoft Exchange Server 2016 | **Critical** Remote Code Execution |
Microsoft Windows Server 2008 R2 | **Critical** Remote Code Execution |
Exploitability Index
The following table provides an exploitability assessment of each of the vulnerabilities addressed this month. The vulnerabilities are listed in order of bulletin ID then CVE ID. Only vulnerabilities that have a severity rating of Critical or Important in the bulletins are included.
How do I use this table?
Use this table to learn about the likelihood of code execution and denial of service exploits within 30 days of security bulletin release, for each of the security updates that you may need to install. Review each of the assessments below, in accordance with your specific configuration, to prioritize your deployment of this month's updates. For more information about what these ratings mean, and how they are determined, please see Microsoft Exploitability Index.
In the columns below, "Latest Software Release" refers to the subject software, and "Older Software Releases" refers to all older, supported releases of the subject software, as listed in the "Affected Software" and "Non-Affected Software" tables in the bulletin.
**CVE ID** | **Vulnerability Title** | **Exploitability Assessment for Latest Software Release** |
**Exploitability Assessment for Older Software Release** |
**Denial of Service Exploitability Assessment** |
CVE-2017-0290 | Scripting Engine Memory Corruption Vulnerability | 2 - Exploitation Less Likely | 2 - Exploitation Less Likely | Not applicable |
Verify that the update is installed
Customers should verify that the latest version of the Microsoft Malware Protection Engine and definition updates are being actively downloaded and installed for their Microsoft antimalware products.For more information on how to verify the version number for the Microsoft Malware Protection Engine that your software is currently using, see the section, "Verifying Update Installation", in Microsoft Knowledge Base Article 2510781.
For affected software, verify that the Microsoft Malware Protection Engine version is 1.1.13704.0 or later.
If necessary, install the update
Administrators of enterprise antimalware deployments should ensure that their update management software is configured to automatically approve and distribute engine updates and new malware definitions. Enterprise administrators should also verify that the latest version of the Microsoft Malware Protection Engine and definition updates are being actively downloaded, approved and deployed in their environment.For end-users, the affected software provides built-in mechanisms for the automatic detection and deployment of this update. For these customers, the update will be applied within 48 hours of its availability. The exact time frame depends on the software used, Internet connection, and infrastructure configuration. End users that do not wish to wait can manually update their antimalware software.
For more information on how to manually update the Microsoft Malware Protection Engine and malware definitions, refer to Microsoft Knowledge Base Article 2510781.
Acknowledgments
Microsoft thanks the following for working with us to help protect customers:
- Natalie Silvanovich and Tavis Ormandy of Google Project Zero
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 visit the active protections websites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.
Feedback
- You can provide feedback by completing the Microsoft Help and Support form, Customer Service Contact Us.
Support
- Customers in the United States and Canada can receive technical support from Security Support. For more information, see Microsoft Help and Support.
- International customers can receive support from their local Microsoft subsidiaries. For more information, see International Support.
- Microsoft TechNet Security provides additional information about security in Microsoft products.
Disclaimer
The information provided in this advisory 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 (May 8, 2017): Advisory published.
- V1.1 (May 11, 2017): Added link to the same information in the Security Update Guide. This is an informational change only.
- V1.2 (May 12, 2017): Added entries into the affected software table. This is an informational change only.
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