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Description of the security update for the Windows DNSAPI denial of service vulnerability in Windows Server 2008, Windows Embedded POSReady 2009, and Windows Embedded Standard 2009: July 10, 2018

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Summary

A denial of service vulnerability exists in the Windows Domain Name System (DNS) DNSAPI.dll when it fails to properly handle DNS responses.

To learn more about the vulnerability, go to CVE-2018-8304.

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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 Windows Update: FAQ.

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: July 10, 2018

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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-KB4291391-x86.msu 8FDB022F0374EF0DAC67150280BEAFF67822957E A3A3F02DA52ABA0A45C422FFB62F86B6C2A5CBEE6E031AE6202D0C71B66B5879
Windows6.0-KB4291391-ia64.msu D07C6ACF8066EF39D941FDBBA1016180EEE52A1B F5D0330A8988ED3D8944A724E859269B2D8A7DB3C2CD24237E9B5EC661A0DCD1
Windows6.0-KB4291391-x64.msu 8FD1761643678688C069D6673A4029111BA4462D 3C2DCF27BF6A2C858EE5C0436E4692E5536AE32AEDB99D0713E0E9483ADE036A
WindowsXP-KB4291391-x86-Embedded-ENU.exe A48BC4BA244B5A49D0191900C5F65F60E1568579 E65B9E76A80B48C8E6B60ED8CCBCEC9C2F1F73A3C0774B898D8BED1921EA28CE


File information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows Server 2008 file information

For all supported x86-based versions
File name File version File size Date Time Platform
Dnsapi.dll 6.0.6002.24412 168,448 08-Jun-2018 15:44 x86
Dnscacheugc.exe 6.0.6002.24412 25,088 08-Jun-2018 14:01 x86
Dnsrslvr.dll 6.0.6002.24412 86,528 08-Jun-2018 15:44 x86
For all supported ia64-based versions
File name File version File size Date Time Platform
Dnsapi.dll 6.0.6002.24412 430,080 08-Jun-2018 15:35 IA-64
Dnscacheugc.exe 6.0.6002.24412 60,416 08-Jun-2018 14:09 IA-64
Dnsrslvr.dll 6.0.6002.24412 222,208 08-Jun-2018 15:35 IA-64
Dnsapi.dll 6.0.6002.24412 168,448 08-Jun-2018 15:44 x86
Dnscacheugc.exe 6.0.6002.24412 25,088 08-Jun-2018 14:01 x86
For all supported x64-based versions
File name File version File size Date Time Platform
Dnsapi.dll 6.0.6002.24412 221,696 08-Jun-2018 15:43 x64
Dnscacheugc.exe 6.0.6002.24412 28,672 08-Jun-2018 14:11 x64
Dnsrslvr.dll 6.0.6002.24412 117,760 08-Jun-2018 15:43 x64
Dnsapi.dll 6.0.6002.24412 168,448 08-Jun-2018 15:44 x86
Dnscacheugc.exe 6.0.6002.24412 25,088 08-Jun-2018 14:01 x86


Windows Embedded POSReady 2009, and Windows Embedded Standard 2009 file information

For all supported x86-based versions
File name File version File size Date Time Platform SP requirement Service branch
Afd.sys 5.1.2600.7510 138,496 09-Jun-2018 23:02 x86 SP3 SP3QFE
Dnsapi.dll 5.1.2600.7510 150,016 11-Jun-2018 23:30 x86 SP3 SP3QFE
Dnsrslvr.dll 5.1.2600.7510 45,568 11-Jun-2018 23:30 x86 SP3 SP3QFE
Mswsock.dll 5.1.2600.7510 245,248 11-Jun-2018 23:30 x86 SP3 SP3QFE
System.adm Not applicable 1,752,132 31-Jan-2018 18:36 Not applicable SP3 SP3QFE
Tcpip.sys 5.1.2600.7510 361,600 09-Jun-2018 23:02 x86 SP3 SP3QFE
Tcpip6.sys 5.1.2600.7510 226,880 09-Jun-2018 22:42 x86 SP3 SP3QFE
Updspapi.dll 6.3.13.0 382,840 01-Feb-2018 21:28 x86 None Not applicable

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

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Article Info
Article ID : 4291391
Revision : 11
Created on : 7/12/2018
Published on : 7/12/2018
Exists online : False
Views : 450