08-05-2021

Microsoft Windows 8 Patch Download

Become an Insider: be one of the first to explore new Windows features for you and your business or use the latest Windows SDK to build great apps. Skip to main content Microsoft. Direct and install Windows 8.1 Update, 32-bit and 64-bit, individually if you are unable to download and install it via Microsoft Store or Windows Update.

Microsoft Windows 8 Patch Download

Microsoft Windows 10 may be around the corner, but the company is still issuing Windows 8.1 updates on a fairly regular basis. If you’re already using Windows 8.1, and aren’t sure you’re running the latest system update, the easiest way to check and download it is to visit PC Settings (the new Control Panel, available from the right-hand menu bar) and click “Update and recovery.” There is also the option to download the latest Windows 8.1 Update as standalone files, if you want to archive them or perform an offline or enterprise installation.

If you haven’t already installed the latest system updates, you should do so — Microsoft has said that users won’t get any security updates if they stick with older versions of Windows 8.1. To continue receiving security updates, you need to make sure you’re running the latest version of the OS. How do you do that, for free? Just follow these simple instructions.

How to download and install the latest Windows 8.1 Update

As we previously mentioned, the quickest way to get the latest update is to use the PC Settings control panel. If you do that, skip ahead to the section at the end of the story with tips on how to make the most of it. If you want to download the standalone files, though, read on.

As always, we have to preface this with the usual disclaimer: Downloading Windows updates using unconventional methods is risky. At the very least, you should ensure that the SHA hash of the downloaded file matches by using the Microsoft File Checksum Integrity Verifier (a free tool). If you have any important documents on your computer, you should back them up, too (this should be an unnecessary precaution, though; updates are just a bunch of patches, rather than a complete reinstallation).

Use the following links to download the right version of Windows 8.1 for your computer’s architecture (probably 64-bit, unless you have an older computer or a tablet).

Official Windows Update download links:

  • 64-bit:
    KB2919442 / KB2919355 / KB2932046 / KB2937592 / KB2938439 / KB2934018
  • 32-bit:
    KB2919442 / KB2919355 / KB2932046 / KB2937592 / KB2938439 / KB2934018
  • ARM:
    KB2919442 / KB2919355 / KB2932046 / KB2937592 / KB2938439 / KB2934018

Alternatively, if you don’t like direct downloads, you can always hit up the official Windows Update website, which always points you to the latest version, and follow the instructions there.

Once you’ve downloaded the initial Update 1, you will have six separate patches that need to be installed in a very specific order. Your computer will need to reboot a few times during the process.

  1. KB2919442
  2. KB2919355
  3. KB2932046
  4. KB2937592
  5. KB2938439
  6. KB2934018

Windows 8.1 Update Desktop. Note how Metro apps can now be minimized to the Taskbar.

Life after updating Windows 8.1

If you’re a mouse-and-keyboard person, you will find that the latest version of Windows 8.1 makes the Metro interface more palatable. Whether this will move you to actually use the new Start screen is a different question. Unless there’s a Metro-style app that you really want to use, you will probably still find yourself on the Desktop, using a third-party app to bring back the Windows 7-style Start menu. On the rare occasion that you find yourself thrust into the new Metro interface, at least the latest version of Windows 8.1 makes the whole experience feel a little less you’re being brutally plucked out of one operating system and unceremoniously dumped in another. So that’s good.

On the Desktop side of things, the latest update doesn’t change much. Recent tweaks have included better support for high-PPI displays, and that audio and video files now open in Photo Viewer and Media Player, respectively, rather than bouncing you into Metro. For Windows 8.1 tablet owners, you now get a Search button on the Start screen, and some of the stock Metro apps have been updated/improved. Really, though, if you’re a power user and have some free time to play around, check out how to install Windows 10 Technical Preview in a virtual machine. Soon, things will get much, much better.

Sebastian Anthony wrote the original version of this article. It has since been updated with new information.

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Security Update for Microsoft Windows SMB Server (4013389)

Published: March 14, 2017

Version: 1.0

Microsoft Free Windows 8 Download

Executive Summary

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.

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 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**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0143)[**Windows SMB Remote Code Execution Vulnerability – CVE-2017-0144**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0144)[**Windows SMB Remote Code Execution Vulnerability – CVE-2017-0145**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0145)[**Windows SMB Remote Code Execution Vulnerability – CVE-2017-0146**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0146)[**Windows SMB Information Disclosure Vulnerability – CVE-2017-0147**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0147)[**Windows SMB Remote Code Execution Vulnerability – CVE-2017-0148**](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0148)**Updates Replaced**
**Windows Vista**
[Windows Vista Service Pack 2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012598) (4012598)**Critical** Remote Code Execution**Critical** Remote Code Execution**Critical** Remote Code Execution**Critical** Remote Code Execution**Important** Information Disclosure**Critical** Remote Code Execution3177186 in [MS16-114](http://go.microsoft.com/fwlink/?linkid=824826)
[Windows Vista x64 Edition Service Pack 2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012598) (4012598)**Critical** Remote Code Execution**Critical** Remote Code Execution**Critical** Remote Code Execution**Critical** Remote Code Execution**Important** Information Disclosure**Critical** Remote Code Execution3177186 in [MS16-114](http://go.microsoft.com/fwlink/?linkid=824826)
**Windows Server 2008**
[Windows Server 2008 for 32-bit Systems Service Pack 2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012598) (4012598)**Critical** Remote Code Execution**Critical** Remote Code Execution**Critical** Remote Code Execution**Critical** Remote Code Execution**Important** Information Disclosure**Critical** Remote Code Execution3177186 in [MS16-114](http://go.microsoft.com/fwlink/?linkid=824826)
[Windows Server 2008 for x64-based Systems Service Pack 2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012598) (4012598)**Critical** Remote Code Execution**Critical** Remote Code Execution**Critical** Remote Code Execution**Critical** Remote Code Execution**Important** Information Disclosure**Critical** Remote Code Execution3177186 in [MS16-114](http://go.microsoft.com/fwlink/?linkid=824826)
[Windows Server 2008 for Itanium-based Systems Service Pack 2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012598) (4012598)**Critical** Remote Code Execution**Critical** Remote Code Execution**Critical** Remote Code Execution**Critical** Remote Code Execution**Important** Information Disclosure**Critical** Remote Code Execution3177186 in [MS16-114](http://go.microsoft.com/fwlink/?linkid=824826)
**Windows 7**
[Windows 7 for 32-bit Systems Service Pack 1](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012212) (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 ExecutionNone
[Windows 7 for 32-bit Systems Service Pack 1](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012215) (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](https://support.microsoft.com/kb/3212646)
[Windows 7 for x64-based Systems Service Pack 1](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012212) (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 ExecutionNone
[Windows 7 for x64-based Systems Service Pack 1](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012215) (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](https://support.microsoft.com/kb/3212646)
**Windows Server 2008 R2**
[Windows Server 2008 R2 for x64-based Systems Service Pack 1](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012212) (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 ExecutionNone
[Windows Server 2008 R2 for x64-based Systems Service Pack 1](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012215) (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](https://support.microsoft.com/kb/3212646)
[Windows Server 2008 R2 for Itanium-based Systems Service Pack 1](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012212) (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 ExecutionNone
[Windows Server 2008 R2 for Itanium-based Systems Service Pack 1](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012215) (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](https://support.microsoft.com/kb/3212646)
**Windows 8.1**
[Windows 8.1 for 32-bit Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012213) (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 ExecutionNone
[Windows 8.1 for 32-bit Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012216) (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](https://support.microsoft.com/kb/3205401)
[Windows 8.1 for x64-based Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012213) (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 ExecutionNone
[Windows 8.1 for x64-based Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012216) (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](https://support.microsoft.com/kb/3205401)
**Windows Server 2012 and Windows Server 2012 R2**
[Windows Server 2012](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012214) (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 ExecutionNone
[Windows Server 2012](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012217) (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](https://support.microsoft.com/kb/3205409)
[Windows Server 2012 R2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012213) (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 ExecutionNone
[Windows Server 2012 R2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012216) (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](https://support.microsoft.com/kb/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](https://support.microsoft.com/kb/3205401)
**Windows 10**
[Windows 10 for 32-bit Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012606)[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](https://support.microsoft.com/en-us/kb/3210720)
[Windows 10 for x64-based Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012606)[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](https://support.microsoft.com/en-us/kb/3210720)
[Windows 10 Version 1511 for 32-bit Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4013198)[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](https://support.microsoft.com/en-us/kb/3210721)
[Windows 10 Version 1511 for x64-based Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4013198)[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](https://support.microsoft.com/en-us/kb/3210721)
[Windows 10 Version 1607 for 32-bit Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4013429)[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](https://support.microsoft.com/en-us/kb/3213986)
[Windows 10 Version 1607 for x64-based Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4013429)[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](https://support.microsoft.com/en-us/kb/3213986)
**Windows Server 2016**
[Windows Server 2016 for x64-based Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4013429)[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](https://support.microsoft.com/en-us/kb/3213986)
**Server Core installation option**
[Windows Server 2008 for 32-bit Systems Service Pack 2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012598) (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 Execution3177186 in [MS16-114](http://go.microsoft.com/fwlink/?linkid=824826)
[Windows Server 2008 for x64-based Systems Service Pack 2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012598) (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 Execution3177186 in [MS16-114](http://go.microsoft.com/fwlink/?linkid=824826)
[Windows Server 2008 R2 for x64-based Systems Service Pack 1](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012212) (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 ExecutionNone
[Windows Server 2008 R2 for x64-based Systems Service Pack 1](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012215) (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](https://support.microsoft.com/kb/3212646)
[Windows Server 2012](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012214) (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 ExecutionNone
[Windows Server 2012](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012217) (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](https://support.microsoft.com/kb/3205409)
[Windows Server 2012 R2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012213) (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 ExecutionNone
[Windows Server 2012 R2](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4012216) (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](https://support.microsoft.com/kb/3205401)
[Windows Server 2016 for x64-based Systems](http://catalog.update.microsoft.com/v7/site/search.aspx?q=kb4013429)[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](https://support.microsoft.com/en-us/kb/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](https://blogs.technet.microsoft.com/windowsitpro/2016/08/15/further-simplifying-servicing-model-for-windows-7-and-windows-8-1/).

[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).

Vulnerability Information

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](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0143)NoNo
Windows SMB Remote Code Execution Vulnerability[CVE-2017-0144](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0144)NoNo
Windows SMB Remote Code Execution Vulnerability[CVE-2017-0145](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0145)NoNo
Windows SMB Remote Code Execution Vulnerability[CVE-2017-0146](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0146)NoNo
Windows SMB Remote Code Execution Vulnerability[CVE-2017-0148](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0148)NoNo
### Mitigating Factors Microsoft has not identified any [mitigating factors](https://technet.microsoft.com/library/security/dn848375.aspx) for these vulnerabilities. ### Workarounds The following [workarounds](https://technet.microsoft.com/library/security/dn848375.aspx) may be helpful in your situation: - **Disable SMBv1** **For customers running Windows Vista and later** See [Microsoft Knowledge Base Article 2696547](https://support.microsoft.com/kb/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:

Microsoft Windows 8 Linux

**Vulnerability title****CVE number****Publicly disclosed****Exploited**
Windows SMB Information Disclosure Vulnerability[CVE-2017-0147](http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-0147)NoNo
### Mitigating Factors Microsoft has not identified any [mitigating factors](https://technet.microsoft.com/library/security/dn848375.aspx) for this vulnerability. ### Workarounds The following [workarounds](https://technet.microsoft.com/library/security/dn848375.aspx) may be helpful in your situation: - **Disable SMBv1** **For customers running Windows Vista and later** See [Microsoft Knowledge Base Article 2696547](https://support.microsoft.com/kb/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. Security Update Deployment --------------------------8.1

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

Acknowledgments

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

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.

Microsoft Windows 8 Patch Download Windows 10

Revisions

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

Page generated 2017-05-08 07:15-07:00.