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Are you affected from Wannacry? Microsoft has released the patches for Wannacry Ransomware. Please download and install these patches on priority. Apr 17, 2018  Download the Microsoft Security Essentials virus and spyware definition update file that is appropriate for your version of Windows: Download the file for a 32-bit (x86-based) version of Windows Download the file for a 64-bit version of Windows.

Microsoft has released an update for the malware scanning engine bundled with most of its Windows security products in order to fix a highly critical vulnerability that could allow attackers to hack computers.

The vulnerability was discovered by Google Project Zero researchers Tavis Ormandy and Natalie Silvanovich on Saturday and was serious enough for Microsoft to create and release a patch by Monday. This was an unusually fast response for the company, which typically releases security updates on the second Tuesday of every month and rarely breaks out of that cycle.

Ormandy announced Saturday on Twitter that he and his colleague found a “crazy bad” vulnerability in Windows and described it as “the worst Windows remote code execution in recent memory.”

At the time, the researcher didn’t disclose any other details about the flaw that would have allowed others to figure out where it’s located, but said that potential exploits would affect Windows installations in their default configurations and could be self-propagating.

According to a Microsoft security advisory published Monday, the vulnerability can be triggered when the Microsoft Malware Protection Engine scans a specially crafted file. The engine is used by Windows Defender, the malware scanner preinstalled on Windows 7 and later, as well as by other Microsoft consumer and enterprise security products: Microsoft Security Essentials, Microsoft Forefront Endpoint Protection 2010, Microsoft Endpoint Protection, Microsoft Forefront Security for SharePoint Service Pack 3, Microsoft System Center Endpoint Protection and Windows Intune Endpoint Protection.

Desktop and server Windows deployments might be at risk, especially if real-time protection is turned on in the affected security products. With real-time protection on, the Malware Protection Engine inspects files automatically as soon as they appear on the file system, as opposed to processing them during scheduled or manually triggered scanning operations.

According to the Google Project Zero description of this vulnerability, the mere presence of a specially crafted file in any form and with any extension on the computer could trigger exploitation. This includes unopened email attachments, unfinished downloads, temporary internet files cached by the browser and even user content submitted to a website that’s hosted on a Windows-based web server running Internet Information Services (IIS).

Because the Microsoft Malware Protection Engine runs with LocalSystem privileges, successful exploitation of this vulnerability could allow hackers to take full control of the underlying OS. According to Microsoft, attackers could then “install programs; view, change, or delete data; or create new accounts with full user rights.”

Users should check that the Microsoft Malware Protection Engine version used in their products is 1.1.10701.0 or later. Propagation of the fix to products that are configured to for automatic updates can take up to 48 hours, but users can also trigger a manual 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,” Microsoft said in its advisory. “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.”

Virus-->

Security Update for Microsoft Windows SMB Server (4013389)

Published: March 14, 2017

Version: 1.0

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.

Microsoft Virus Removal

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

Microsoft Virus Patch

### 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:
**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 --------------------------

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

Microsoft Virus Patch Download Torrent

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.

Revisions

Microsoft Virus Scan And Removal

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

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