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Microsoft Security Bulletin MS17-010 - Critical

Security Update for Microsoft Windows SMB Server (4013389)

Published: March 14, 2017

Version: 1.0

This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker sends specially crafted messages to a Microsoft Server Message Block 1.0 (SMBv1) server.

This security update is rated Critical 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 SMBv1 handles specially crafted requests.

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

For more information about this update, see Microsoft Knowledge Base Article 4013389.

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 March bulletin summary.

Note Please see the Security Update Guide for a new approach to consuming the security update information. You can customize your views and create affected software spreadsheets, as well as download data via a restful API. For more information, please see the Security Updates Guide FAQ. As a reminder, the Security Updates Guide will be replacing security bulletins. Please see our blog post, Furthering our commitment to security updates, for more details.

Operating System

Windows SMB Remote Code Execution Vulnerability – CVE-2017-0143

Windows SMB Remote Code Execution Vulnerability – CVE-2017-0144

Windows SMB Remote Code Execution Vulnerability – CVE-2017-0145

Windows SMB Remote Code Execution Vulnerability – CVE-2017-0146

Windows SMB Information Disclosure Vulnerability – CVE-2017-0147

Windows SMB Remote Code Execution Vulnerability – CVE-2017-0148

Updates Replaced

Windows Vista

Windows Vista Service Pack 2
(4012598)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3177186 in MS16-114

Windows Vista x64 Edition Service Pack 2
(4012598)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3177186 in MS16-114

Windows Server 2008

Windows Server 2008 for 32-bit Systems Service Pack 2
(4012598)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3177186 in MS16-114

Windows Server 2008 for x64-based Systems Service Pack 2
(4012598)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3177186 in MS16-114

Windows Server 2008 for Itanium-based Systems Service Pack 2
(4012598)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3177186 in MS16-114

Windows 7

Windows 7 for 32-bit Systems Service Pack 1
(4012212)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows 7 for 32-bit Systems Service Pack 1
(4012215)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3212646

Windows 7 for x64-based Systems Service Pack 1
(4012212)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows 7 for x64-based Systems Service Pack 1
(4012215)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3212646

Windows Server 2008 R2

Windows Server 2008 R2 for x64-based Systems Service Pack 1
(4012212)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows Server 2008 R2 for x64-based Systems Service Pack 1
(4012215)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3212646

Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(4012212)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(4012215)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3212646

Windows 8.1

Windows 8.1 for 32-bit Systems
(4012213)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows 8.1 for 32-bit Systems
(4012216)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3205401

Windows 8.1 for x64-based Systems
(4012213)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows 8.1 for x64-based Systems
(4012216)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3205401

Windows Server 2012 and Windows Server 2012 R2

Windows Server 2012
(4012214)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows Server 2012
(4012217)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3205409

Windows Server 2012 R2
(4012213)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows Server 2012 R2
(4012216)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3205401

Windows RT 8.1

Windows RT 8.1[2]
(4012216)
Monthly Rollup

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3205401

Windows 10

Windows 10 for 32-bit Systems [3]
(4012606)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3210720

Windows 10 for x64-based Systems [3]
(4012606)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3210720

Windows 10 Version 1511 for 32-bit Systems [3]
(4013198)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3210721

Windows 10 Version 1511 for x64-based Systems [3]
(4013198)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3210721

Windows 10 Version 1607 for 32-bit Systems [3]
(4013429)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3213986

Windows 10 Version 1607 for x64-based Systems [3]
(4013429)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3213986

Windows Server 2016

Windows Server 2016 for x64-based Systems [3]
(4013429)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3213986

Server Core installation option

Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
(4012598)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3177186 in MS16-114

Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
(4012598)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3177186 in MS16-114

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(4012212)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(4012215)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3212646

Windows Server 2012 (Server Core installation)
(4012214)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows Server 2012 (Server Core installation)
(4012217)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3205409

Windows Server 2012 R2 (Server Core installation)
(4012213)
Security Only[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

None

Windows Server 2012 R2 (Server Core installation)
(4012216)
Monthly Rollup[1]

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3205401

Windows Server 2016 for x64-based Systems [3](Server Core installation)
(4013429)

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Critical 
Remote Code Execution

Important 
Information Disclosure

Critical 
Remote Code Execution

3213986

[1]Beginning with the October 2016 release, Microsoft has changed the update servicing model for Windows 7, Windows Server 2008 R2, Windows 8.1, Windows Server 2012, and Windows Server 2012 R2. For more information, please see this Microsoft TechNet article.

[2]This update is only available via Windows Update.

[3] Windows 10 and Windows Server 2016 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. Please note that effective December 13, 2016, Windows 10 and Windows Server 2016 details for the Cumulative Updates will be documented in Release Notes. Please refer to the Release Notes for OS Build numbers, Known Issues, and affected file list information.

*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).

Multiple Windows SMB Remote Code Execution Vulnerabilities

Remote code execution vulnerabilities exist in the way that the Microsoft Server Message Block 1.0 (SMBv1) server handles certain requests. An attacker who successfully exploited the vulnerabilities could gain the ability to execute code on the target server.

To exploit the vulnerability, in most situations, an unauthenticated attacker could send a specially crafted packet to a targeted SMBv1 server.

The security update addresses the vulnerabilities by correcting how SMBv1 handles these specially crafted requests.

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

Vulnerability title

CVE number

Publicly disclosed

Exploited

Windows SMB Remote Code Execution Vulnerability

CVE-2017-0143

No

No

Windows SMB Remote Code Execution Vulnerability

CVE-2017-0144

No

No

Windows SMB Remote Code Execution Vulnerability

CVE-2017-0145

No

No

Windows SMB Remote Code Execution Vulnerability

CVE-2017-0146

No

No

Windows SMB Remote Code Execution Vulnerability

CVE-2017-0148

No

No

Mitigating Factors

Microsoft has not identified any mitigating factors for these vulnerabilities.

Workarounds

The following workarounds may be helpful in your situation:

  • Disable SMBv1

    For customers running Windows Vista and later

    See Microsoft Knowledge Base Article 2696547.

    Alternative method for customers running Windows 8.1 or Windows Server 2012 R2 and later

    For client operating systems:

    1. Open Control Panel, click Programs, and then click Turn Windows features on or off.
    2. In the Windows Features window, clear the SMB1.0/CIFS File Sharing Support checkbox, and then click OK to close the window.
    3. Restart the system.
       

    For server operating systems:

    1. Open Server Manager and then click the Manage menu and select Remove Roles and Features.
    2. In the Features window, clear the SMB1.0/CIFS File Sharing Support check box, and then click OK to close the window.
    3. Restart the system.
       

    Impact of workaround. The SMBv1 protocol will be disabled on the target system.

    How to undo the workaround. Retrace the workaround steps, and select the SMB1.0/CIFS File Sharing Support check box to restore the SMB1.0/CIFS File Sharing Support feature to an active state.

 

Windows SMB Information Disclosure Vulnerability – CVE-2017-0147

An information disclosure vulnerability exists in the way that the Microsoft Server Message Block 1.0 (SMBv1) server handles certain requests. An attacker who successfully exploited this vulnerability could craft a special packet, which could lead to information disclosure from the server.

To exploit the vulnerability, in most situations, an unauthenticated attacker could send a specially crafted packet to a targeted SMBv1 server.

The security update addresses the vulnerability by correcting how SMBv1 handles these specially crafted requests.

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

Vulnerability title

CVE number

Publicly disclosed

Exploited

Windows SMB Information Disclosure Vulnerability

CVE-2017-0147

No

No

Mitigating Factors

Microsoft has not identified any mitigating factors for this vulnerability.

Workarounds

The following workarounds may be helpful in your situation:

  • Disable SMBv1

    For customers running Windows Vista and later

    See Microsoft Knowledge Base Article 2696547.

    Alternative method for customers running Windows 8.1 or Windows Server 2012 R2 and later

    For client operating systems:

    1. Open Control Panel, click Programs, and then click Turn Windows features on or off.
    2. In the Windows Features window, clear the SMB1.0/CIFS File Sharing Support checkbox, and then click OK to close the window.
    3. Restart the system.
       

    For server operating systems:

    1. Open Server Manager and then click the Manage menu and select Remove Roles and Features.
    2. In the Features window, clear the SMB1.0/CIFS File Sharing Support check box, and then click OK to close the window.
    3. Restart the system.
       

    Impact of workaround. The SMBv1 protocol will be disabled on the target system.

    How to undo the workaround. Retrace the workaround steps, and select the SMB1.0/CIFS File Sharing Support check box to restore the SMB1.0/CIFS File Sharing Support feature to an active state.

 

For Security Update Deployment information, see the Microsoft Knowledge Base article referenced here in the Executive Summary.

Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See Acknowledgments for more information.

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.

  • V1.0 (March 14, 2017): Bulletin published.
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