Published: March 14, 2017
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Security Update for Microsoft Windows SMB Server (4013389)
WannaCry ransomware hit Windows 7 the hardest. Were able to download a critical security patch released on the 14 March, immunising their computers against WannaCry. Windows XP was the.
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.
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.
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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.
[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 InformationMultiple 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:
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.
Revisions
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Wanna Cry Patch Microsoft
When WannaCry struck a couple of days back, it was understandable that many computers did not have the SMB 'flaw' patched, due to many people being discouraged due to MS's practices of pushing telemetry (or maybe just call it spyware?) and nagging or even automatic updates to W10 trough the update system.
In light of that, I think it will be beneficial to point out which particular updates patch that up, so people can install them selectively.
This includes both the updates from March 14, 2017, which were released Stevoisiak
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dtechdtech
1 Answer![]() Which particular updates fix the SMB 'flaw'?
This has been fully documented by Microsoft. Fe6 english patch download torrent.
MS17-010: Security update for Windows SMB Server: March 14, 2017
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.
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To learn more about the vulnerability, see Microsoft Security Bulletin MS17-010.
The following articles contain more information about this security update as it relates to individual product versions. These articles may contain known issue information.
Source MS17-010: Security update for Windows SMB Server: March 14, 2017
Notes:
Customer Guidance for WannaCrypt attacks
Today many of our customers around the world and the critical systems they depend on were victims of malicious “WannaCrypt” software. Seeing businesses and individuals affected by cyberattacks, such as the ones reported today, was painful. Microsoft worked throughout the day to ensure we understood the attack and were taking all possible actions to protect our customers. This blog spells out the steps every individual and business should take to stay protected. Additionally, we are taking the highly unusual step of providing a security update for all customers to protect Windows platforms that are in custom support only, including Windows XP, Windows 8, and Windows Server 2003. Customers running Windows 10 were not targeted by the attack today.
Details are below.
We also know that some of our customers are running versions of Windows that no longer receive mainstream support. That means those customers will not have received the above mentioned Security Update released in March. Given the potential impact to customers and their businesses, we made the decision to make the Security Update for platforms in custom support only, Windows XP, Windows 8, and Windows Server 2003, broadly available for download (see links below).
Windows 8.1 Wanna Cry Patch
Customers who are running supported versions of the operating system (Windows Vista, Windows Server 2008, Windows 7, Windows Server 2008 R2, Windows 8.1, Windows Server 2012, Windows 10, Windows Server 2012 R2, Windows Server 2016) will have received the security update MS17-010 in March. If customers have automatic updates enabled or have installed the update, they are protected. For other customers, we encourage them to install the update as soon as possible.
Source Customer Guidance for WannaCrypt attacks
Further Reading
Windows 7 Wanna Cry Patch Download Torrent
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