Security update for the Windows SMB Information Disclosure Vulnerability in Windows Server 2008: May 9, 2017

View products that this article applies to.

Summary

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 exploits this vulnerability could craft a special packet. This could cause an information disclosure from the server.

To learn more about the vulnerability, go to the Security Update Guide.

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More Information

Important

If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

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How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Get security updates automatically.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

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Deployment information

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:

Security update deployment information: May 9, 2017

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More Information

How to obtain help and support for this security update

Help for installing updates: Windows Update FAQ

Security solutions for IT professionals: TechNet Security Support and Troubleshooting

Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure

Local support according to your country: International Support

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File Information

File hash information

File name	SHA1 hash	SHA256 hash
Windows6.0-KB4018466-ia64.msu	C3F75846826AD3992FBC2D7A8C57A85F7F0A397C	38D980BA623A0AD5695DB70F6CA0B49A9A1069EE304DCF1FF4F4411823EBC0C7
Windows6.0-KB4018466-x64.msu	716403222008343DAD1A9964E1C45787E51A8792	5DF45753B06958D0DA1FE1E4DF6C74A504D0BA23E5FE005A09DBDA07D18CB448
Windows6.0-KB4018466-x86.msu	33843FD20FDD7D88A77C6AC5BA02145641EDE966	FBC2257442A6ED0351FB677F93A8FB71A2C2BD64B73D23F63D7668D1440D760A

File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows Server 2008 file information

Notes

The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

For all supported ia64-based versions

File name	File version	File size	Date	Time	Platform
Netevent.dll.mui	6.0.6002.19673	270,336	03-Aug-2016	16:57	Not applicable
Netevent.dll.mui	6.0.6002.19673	230,912	03-Aug-2016	15:36	Not applicable
Netevent.dll.mui	6.0.6002.19673	270,848	03-Aug-2016	17:01	Not applicable
Netevent.dll.mui	6.0.6002.19673	144,384	03-Aug-2016	16:49	Not applicable
Netevent.dll.mui	6.0.6002.19673	137,216	03-Aug-2016	17:04	Not applicable
Netevent.dll.mui	6.0.6002.19673	99,840	03-Aug-2016	17:00	Not applicable
Netevent.dll.mui	6.0.6002.19673	101,376	03-Aug-2016	16:55	Not applicable
Netevent.dll.mui	6.0.6002.24089	270,336	07-Apr-2017	16:51	Not applicable
Netevent.dll.mui	6.0.6002.24089	230,912	07-Apr-2017	15:22	Not applicable
Netevent.dll.mui	6.0.6002.24089	270,848	07-Apr-2017	16:42	Not applicable
Netevent.dll.mui	6.0.6002.24089	144,384	07-Apr-2017	16:54	Not applicable
Netevent.dll.mui	6.0.6002.24089	137,216	07-Apr-2017	16:49	Not applicable
Netevent.dll.mui	6.0.6002.24089	99,840	07-Apr-2017	16:53	Not applicable
Netevent.dll.mui	6.0.6002.24089	101,376	07-Apr-2017	16:45	Not applicable
Netevent.dll	6.0.6002.19673	17,920	03-Aug-2016	15:35	IA-64
Netevent.dll	6.0.6002.24089	17,920	07-Apr-2017	15:17	IA-64
Srvnet.sys	6.0.6002.19673	297,984	03-Aug-2016	14:20	IA-64
Srvnet.sys	6.0.6002.24089	297,984	07-Apr-2017	14:21	IA-64
Srv.sys	6.0.6002.19765	967,168	07-Apr-2017	14:21	IA-64
Srv.sys	6.0.6002.24089	969,216	07-Apr-2017	14:22	IA-64
Srv2.sys	6.0.6002.19765	468,480	07-Apr-2017	14:21	IA-64
Srv2.sys	6.0.6002.24089	474,624	07-Apr-2017	14:21	IA-64
Netevent.dll.mui	6.0.6002.19673	278,528	03-Aug-2016	16:20	Not applicable
Netevent.dll.mui	6.0.6002.19673	241,664	03-Aug-2016	15:44	Not applicable
Netevent.dll.mui	6.0.6002.19673	278,528	03-Aug-2016	16:19	Not applicable
Netevent.dll.mui	6.0.6002.19673	155,648	03-Aug-2016	16:38	Not applicable
Netevent.dll.mui	6.0.6002.19673	147,456	03-Aug-2016	16:31	Not applicable
Netevent.dll.mui	6.0.6002.19673	110,592	03-Aug-2016	16:39	Not applicable
Netevent.dll.mui	6.0.6002.19673	110,592	03-Aug-2016	16:27	Not applicable
Netevent.dll.mui	6.0.6002.24089	278,528	07-Apr-2017	16:20	Not applicable
Netevent.dll.mui	6.0.6002.24089	241,664	07-Apr-2017	15:26	Not applicable
Netevent.dll.mui	6.0.6002.24089	278,528	07-Apr-2017	16:35	Not applicable
Netevent.dll.mui	6.0.6002.24089	155,648	07-Apr-2017	16:34	Not applicable
Netevent.dll.mui	6.0.6002.24089	147,456	07-Apr-2017	16:25	Not applicable
Netevent.dll.mui	6.0.6002.24089	110,592	07-Apr-2017	16:38	Not applicable
Netevent.dll.mui	6.0.6002.24089	110,592	07-Apr-2017	16:33	Not applicable
Netevent.dll	6.0.6002.19673	17,920	03-Aug-2016	15:45	x86
Netevent.dll	6.0.6002.24089	17,920	07-Apr-2017	15:24	x86

For all supported x64-based versions

File name	File version	File size	Date	Time	Platform
Netevent.dll.mui	6.0.6002.19673	233,984	03-Aug-2016	17:08	Not applicable
Netevent.dll.mui	6.0.6002.19673	239,104	03-Aug-2016	17:08	Not applicable
Netevent.dll.mui	6.0.6002.19673	270,336	03-Aug-2016	17:06	Not applicable
Netevent.dll.mui	6.0.6002.19673	289,792	03-Aug-2016	17:03	Not applicable
Netevent.dll.mui	6.0.6002.19673	230,912	03-Aug-2016	16:23	Not applicable
Netevent.dll.mui	6.0.6002.19673	263,168	03-Aug-2016	17:04	Not applicable
Netevent.dll.mui	6.0.6002.19673	229,376	03-Aug-2016	17:05	Not applicable
Netevent.dll.mui	6.0.6002.19673	270,848	03-Aug-2016	17:08	Not applicable
Netevent.dll.mui	6.0.6002.19673	253,440	03-Aug-2016	17:10	Not applicable
Netevent.dll.mui	6.0.6002.19673	262,144	03-Aug-2016	17:11	Not applicable
Netevent.dll.mui	6.0.6002.19673	144,384	03-Aug-2016	17:15	Not applicable
Netevent.dll.mui	6.0.6002.19673	137,216	03-Aug-2016	17:07	Not applicable
Netevent.dll.mui	6.0.6002.19673	229,376	03-Aug-2016	17:16	Not applicable
Netevent.dll.mui	6.0.6002.19673	253,952	03-Aug-2016	17:09	Not applicable
Netevent.dll.mui	6.0.6002.19673	248,320	03-Aug-2016	17:02	Not applicable
Netevent.dll.mui	6.0.6002.19673	253,440	03-Aug-2016	17:09	Not applicable
Netevent.dll.mui	6.0.6002.19673	261,120	03-Aug-2016	17:12	Not applicable
Netevent.dll.mui	6.0.6002.19673	241,152	03-Aug-2016	17:11	Not applicable
Netevent.dll.mui	6.0.6002.19673	231,936	03-Aug-2016	17:10	Not applicable
Netevent.dll.mui	6.0.6002.19673	230,912	03-Aug-2016	17:12	Not applicable
Netevent.dll.mui	6.0.6002.19673	99,840	03-Aug-2016	17:08	Not applicable
Netevent.dll.mui	6.0.6002.19673	101,376	03-Aug-2016	17:12	Not applicable
Netevent.dll.mui	6.0.6002.24089	233,984	07-Apr-2017	16:47	Not applicable
Netevent.dll.mui	6.0.6002.24089	239,104	07-Apr-2017	16:47	Not applicable
Netevent.dll.mui	6.0.6002.24089	270,336	07-Apr-2017	16:55	Not applicable
Netevent.dll.mui	6.0.6002.24089	289,792	07-Apr-2017	16:56	Not applicable
Netevent.dll.mui	6.0.6002.24089	230,912	07-Apr-2017	15:45	Not applicable
Netevent.dll.mui	6.0.6002.24089	263,168	07-Apr-2017	16:58	Not applicable
Netevent.dll.mui	6.0.6002.24089	229,376	07-Apr-2017	16:56	Not applicable
Netevent.dll.mui	6.0.6002.24089	270,848	07-Apr-2017	16:47	Not applicable
Netevent.dll.mui	6.0.6002.24089	253,440	07-Apr-2017	16:49	Not applicable
Netevent.dll.mui	6.0.6002.24089	262,144	07-Apr-2017	17:02	Not applicable
Netevent.dll.mui	6.0.6002.24089	144,384	07-Apr-2017	17:01	Not applicable
Netevent.dll.mui	6.0.6002.24089	137,216	07-Apr-2017	16:53	Not applicable
Netevent.dll.mui	6.0.6002.24089	229,376	07-Apr-2017	17:01	Not applicable
Netevent.dll.mui	6.0.6002.24089	253,952	07-Apr-2017	17:01	Not applicable
Netevent.dll.mui	6.0.6002.24089	248,320	07-Apr-2017	16:48	Not applicable
Netevent.dll.mui	6.0.6002.24089	253,440	07-Apr-2017	16:56	Not applicable
Netevent.dll.mui	6.0.6002.24089	261,120	07-Apr-2017	16:58	Not applicable
Netevent.dll.mui	6.0.6002.24089	241,152	07-Apr-2017	16:55	Not applicable
Netevent.dll.mui	6.0.6002.24089	231,936	07-Apr-2017	16:55	Not applicable
Netevent.dll.mui	6.0.6002.24089	230,912	07-Apr-2017	16:57	Not applicable
Netevent.dll.mui	6.0.6002.24089	99,840	07-Apr-2017	16:52	Not applicable
Netevent.dll.mui	6.0.6002.24089	101,376	07-Apr-2017	16:53	Not applicable
Netevent.dll	6.0.6002.19673	17,920	03-Aug-2016	16:23	x64
Netevent.dll	6.0.6002.24089	17,920	07-Apr-2017	15:43	x64
Srvnet.sys	6.0.6002.19673	147,456	03-Aug-2016	14:40	x64
Srvnet.sys	6.0.6002.24089	147,968	07-Apr-2017	14:42	x64
Srv.sys	6.0.6002.19765	446,464	07-Apr-2017	14:43	x64
Srv.sys	6.0.6002.24089	445,440	07-Apr-2017	14:42	x64
Srv2.sys	6.0.6002.19765	176,128	07-Apr-2017	14:42	x64
Srv2.sys	6.0.6002.24089	178,176	07-Apr-2017	14:42	x64
Netevent.dll.mui	6.0.6002.19673	241,664	03-Aug-2016	16:22	Not applicable
Netevent.dll.mui	6.0.6002.19673	249,856	03-Aug-2016	16:21	Not applicable
Netevent.dll.mui	6.0.6002.19673	278,528	03-Aug-2016	16:20	Not applicable
Netevent.dll.mui	6.0.6002.19673	299,008	03-Aug-2016	16:28	Not applicable
Netevent.dll.mui	6.0.6002.19673	241,664	03-Aug-2016	15:44	Not applicable
Netevent.dll.mui	6.0.6002.19673	274,432	03-Aug-2016	16:19	Not applicable
Netevent.dll.mui	6.0.6002.19673	237,568	03-Aug-2016	16:29	Not applicable
Netevent.dll.mui	6.0.6002.19673	278,528	03-Aug-2016	16:19	Not applicable
Netevent.dll.mui	6.0.6002.19673	262,144	03-Aug-2016	16:33	Not applicable
Netevent.dll.mui	6.0.6002.19673	270,336	03-Aug-2016	16:40	Not applicable
Netevent.dll.mui	6.0.6002.19673	155,648	03-Aug-2016	16:38	Not applicable
Netevent.dll.mui	6.0.6002.19673	147,456	03-Aug-2016	16:31	Not applicable
Netevent.dll.mui	6.0.6002.19673	237,568	03-Aug-2016	16:27	Not applicable
Netevent.dll.mui	6.0.6002.19673	262,144	03-Aug-2016	16:39	Not applicable
Netevent.dll.mui	6.0.6002.19673	258,048	03-Aug-2016	16:40	Not applicable
Netevent.dll.mui	6.0.6002.19673	262,144	03-Aug-2016	16:40	Not applicable
Netevent.dll.mui	6.0.6002.19673	270,336	03-Aug-2016	16:32	Not applicable
Netevent.dll.mui	6.0.6002.19673	249,856	03-Aug-2016	16:33	Not applicable
Netevent.dll.mui	6.0.6002.19673	241,664	03-Aug-2016	16:35	Not applicable
Netevent.dll.mui	6.0.6002.19673	241,664	03-Aug-2016	16:35	Not applicable
Netevent.dll.mui	6.0.6002.19673	110,592	03-Aug-2016	16:39	Not applicable
Netevent.dll.mui	6.0.6002.19673	110,592	03-Aug-2016	16:27	Not applicable
Netevent.dll.mui	6.0.6002.24089	241,664	07-Apr-2017	16:38	Not applicable
Netevent.dll.mui	6.0.6002.24089	249,856	07-Apr-2017	16:22	Not applicable
Netevent.dll.mui	6.0.6002.24089	278,528	07-Apr-2017	16:20	Not applicable
Netevent.dll.mui	6.0.6002.24089	299,008	07-Apr-2017	16:19	Not applicable
Netevent.dll.mui	6.0.6002.24089	241,664	07-Apr-2017	15:26	Not applicable
Netevent.dll.mui	6.0.6002.24089	274,432	07-Apr-2017	16:36	Not applicable
Netevent.dll.mui	6.0.6002.24089	237,568	07-Apr-2017	16:34	Not applicable
Netevent.dll.mui	6.0.6002.24089	278,528	07-Apr-2017	16:35	Not applicable
Netevent.dll.mui	6.0.6002.24089	262,144	07-Apr-2017	16:29	Not applicable
Netevent.dll.mui	6.0.6002.24089	270,336	07-Apr-2017	16:30	Not applicable
Netevent.dll.mui	6.0.6002.24089	155,648	07-Apr-2017	16:34	Not applicable
Netevent.dll.mui	6.0.6002.24089	147,456	07-Apr-2017	16:25	Not applicable
Netevent.dll.mui	6.0.6002.24089	237,568	07-Apr-2017	16:21	Not applicable
Netevent.dll.mui	6.0.6002.24089	262,144	07-Apr-2017	16:35	Not applicable
Netevent.dll.mui	6.0.6002.24089	258,048	07-Apr-2017	16:35	Not applicable
Netevent.dll.mui	6.0.6002.24089	262,144	07-Apr-2017	16:44	Not applicable
Netevent.dll.mui	6.0.6002.24089	270,336	07-Apr-2017	16:42	Not applicable
Netevent.dll.mui	6.0.6002.24089	249,856	07-Apr-2017	16:39	Not applicable
Netevent.dll.mui	6.0.6002.24089	241,664	07-Apr-2017	16:30	Not applicable
Netevent.dll.mui	6.0.6002.24089	241,664	07-Apr-2017	16:22	Not applicable
Netevent.dll.mui	6.0.6002.24089	110,592	07-Apr-2017	16:38	Not applicable
Netevent.dll.mui	6.0.6002.24089	110,592	07-Apr-2017	16:33	Not applicable
Netevent.dll	6.0.6002.19673	17,920	03-Aug-2016	15:45	x86
Netevent.dll	6.0.6002.24089	17,920	07-Apr-2017	15:24	x86

For all supported x86-based versions

File name	File version	File size	Date	Time	Platform
Netevent.dll.mui	6.0.6002.19673	241,664	03-Aug-2016	16:22	Not applicable
Netevent.dll.mui	6.0.6002.19673	249,856	03-Aug-2016	16:21	Not applicable
Netevent.dll.mui	6.0.6002.19673	278,528	03-Aug-2016	16:20	Not applicable
Netevent.dll.mui	6.0.6002.19673	299,008	03-Aug-2016	16:28	Not applicable
Netevent.dll.mui	6.0.6002.19673	241,664	03-Aug-2016	15:44	Not applicable
Netevent.dll.mui	6.0.6002.19673	274,432	03-Aug-2016	16:19	Not applicable
Netevent.dll.mui	6.0.6002.19673	237,568	03-Aug-2016	16:29	Not applicable
Netevent.dll.mui	6.0.6002.19673	278,528	03-Aug-2016	16:19	Not applicable
Netevent.dll.mui	6.0.6002.19673	262,144	03-Aug-2016	16:33	Not applicable
Netevent.dll.mui	6.0.6002.19673	270,336	03-Aug-2016	16:40	Not applicable
Netevent.dll.mui	6.0.6002.19673	155,648	03-Aug-2016	16:38	Not applicable
Netevent.dll.mui	6.0.6002.19673	147,456	03-Aug-2016	16:31	Not applicable
Netevent.dll.mui	6.0.6002.19673	237,568	03-Aug-2016	16:27	Not applicable
Netevent.dll.mui	6.0.6002.19673	262,144	03-Aug-2016	16:39	Not applicable
Netevent.dll.mui	6.0.6002.19673	258,048	03-Aug-2016	16:40	Not applicable
Netevent.dll.mui	6.0.6002.19673	262,144	03-Aug-2016	16:40	Not applicable
Netevent.dll.mui	6.0.6002.19673	270,336	03-Aug-2016	16:32	Not applicable
Netevent.dll.mui	6.0.6002.19673	249,856	03-Aug-2016	16:33	Not applicable
Netevent.dll.mui	6.0.6002.19673	241,664	03-Aug-2016	16:35	Not applicable
Netevent.dll.mui	6.0.6002.19673	241,664	03-Aug-2016	16:35	Not applicable
Netevent.dll.mui	6.0.6002.19673	110,592	03-Aug-2016	16:39	Not applicable
Netevent.dll.mui	6.0.6002.19673	110,592	03-Aug-2016	16:27	Not applicable
Netevent.dll.mui	6.0.6002.24089	241,664	07-Apr-2017	16:38	Not applicable
Netevent.dll.mui	6.0.6002.24089	249,856	07-Apr-2017	16:22	Not applicable
Netevent.dll.mui	6.0.6002.24089	278,528	07-Apr-2017	16:20	Not applicable
Netevent.dll.mui	6.0.6002.24089	299,008	07-Apr-2017	16:19	Not applicable
Netevent.dll.mui	6.0.6002.24089	241,664	07-Apr-2017	15:26	Not applicable
Netevent.dll.mui	6.0.6002.24089	274,432	07-Apr-2017	16:36	Not applicable
Netevent.dll.mui	6.0.6002.24089	237,568	07-Apr-2017	16:34	Not applicable
Netevent.dll.mui	6.0.6002.24089	278,528	07-Apr-2017	16:35	Not applicable
Netevent.dll.mui	6.0.6002.24089	262,144	07-Apr-2017	16:29	Not applicable
Netevent.dll.mui	6.0.6002.24089	270,336	07-Apr-2017	16:30	Not applicable
Netevent.dll.mui	6.0.6002.24089	155,648	07-Apr-2017	16:34	Not applicable
Netevent.dll.mui	6.0.6002.24089	147,456	07-Apr-2017	16:25	Not applicable
Netevent.dll.mui	6.0.6002.24089	237,568	07-Apr-2017	16:21	Not applicable
Netevent.dll.mui	6.0.6002.24089	262,144	07-Apr-2017	16:35	Not applicable
Netevent.dll.mui	6.0.6002.24089	258,048	07-Apr-2017	16:35	Not applicable
Netevent.dll.mui	6.0.6002.24089	262,144	07-Apr-2017	16:44	Not applicable
Netevent.dll.mui	6.0.6002.24089	270,336	07-Apr-2017	16:42	Not applicable
Netevent.dll.mui	6.0.6002.24089	249,856	07-Apr-2017	16:39	Not applicable
Netevent.dll.mui	6.0.6002.24089	241,664	07-Apr-2017	16:30	Not applicable
Netevent.dll.mui	6.0.6002.24089	241,664	07-Apr-2017	16:22	Not applicable
Netevent.dll.mui	6.0.6002.24089	110,592	07-Apr-2017	16:38	Not applicable
Netevent.dll.mui	6.0.6002.24089	110,592	07-Apr-2017	16:33	Not applicable
Netevent.dll	6.0.6002.19673	17,920	03-Aug-2016	15:45	x86
Netevent.dll	6.0.6002.24089	17,920	07-Apr-2017	15:24	x86
Srvnet.sys	6.0.6002.19673	103,936	03-Aug-2016	14:20	x86
Srvnet.sys	6.0.6002.24089	103,936	07-Apr-2017	14:22	x86
Srv.sys	6.0.6002.19765	305,152	07-Apr-2017	14:19	x86
Srv.sys	6.0.6002.24089	305,152	07-Apr-2017	14:22	x86
Srv2.sys	6.0.6002.19765	146,432	07-Apr-2017	14:19	x86
Srv2.sys	6.0.6002.24089	148,480	07-Apr-2017	14:22	x86

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Applies to:

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Keywords: kb, atdownload, kbbug, kbexpertiseinter, kbfix, kblangall, kbmustloc, kbsecbulletin, kbsecreview, kbsecurity, kbsecvulnerability, kbsurveynew

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Article Info

Article ID	:	4018466
Revision	:	13
Created on	:	5/12/2017
Published on	:	5/13/2017
Exists online	:	False
Views	:	241

Microsoft KB Archive Search

Security update for the Windows SMB Information Disclosure Vulnerability in Windows Server 2008: May 9, 2017

Summary

More Information

How to obtain and install the update

Method 1: Windows Update

Method 2: Microsoft Update Catalog

Deployment information

More Information

File Information

Applies to: