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Notice

This update is included in the February 2018 Preview of the Quality Rollups for .NET Framework 3.5 SP1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 for Windows Server 2012 (KB 4074806). Parts of this update were previously included in the Security and Quality rollup (KB 4076493) on February 13, 2018, in the Preview of Quality rollup (KB 4057271) on January 17, 2018, and as part of the Security and Quality rollup (KB 4055265) on January 9, 2018.

Summary

This security update resolves a security feature bypass vulnerability that exists when Microsoft .NET Framework and .NET Core components do not completely validate certificates. This security update addresses the vulnerability by helping to make sure that .NET Framework and .NET Core components completely validate certificates. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-0786.

Additionally, this security update resolves a denial of service vulnerability that exists when .NET Framework and .NET Core components improperly process XML documents. This update addresses the vulnerability by correcting how .NET Framework and .NET Core component applications handle XML document processing. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-0764.

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.

Additional information about this security update

  • Enhanced Key Usage (EKU) is described in section 4.2.1.12 of RFC 5280. This extension indicates one or more purposes for which the certified public key may be used in addition to or instead of the basic purposes that are indicated in the key usage extension. For example, a certificate that is used for the authentication of a client to a server must be configured for Client Authentication. Similarly, a certificate that is used for the authentication of a server must be configured for Server Authentication. With this change, besides requiring the appropriate client/server EKU on certificates, if the root certificate is disabled, the certificate chain validation fails.

    When certificates are used for authentication, the authenticator examines the certificate that is provided by the remote endpoint and seeks the correct purpose object identifier in Application Policies extensions. When a certificate is used for client authentication, the object identifier for Client Authentication must be present in the EKU extensions of the certificate, or authentication fails. The object identifier for Client Authentication is 1.3.6.1.5.5.7.3.2. Likewise, when a certificate is used for server authentication, the object identifier for Server Authentication must be present in the EKU extensions of the certificate, or authentication fails. The object identifier for Server Authentication is 1.3.6.1.5.5.7.3.1. Certificates that have no EKU extension continue to authenticate correctly.

    First, consider making changes to your component’s certificates to make sure that they are using the correct EKU OID attributes and are secured correctly. If you temporarily cannot access correctly reissued certificates, you can choose to opt in or out of the security change to avoid any connectivity effects. To do this, specify the following appsetting in the configuration file: <appSettings> <add key="wcf:useLegacyCertificateUsagePolicy" value="true" /> </appSettings> Note Setting the value to “true” will opt out of the security changes.

  • For more information about this security update as it relates to Windows Server 2012, see the following articles in the Microsoft Knowledge Base:

4074806 February 2018 Preview of the Quality Rollups for .NET Framework 3.5 SP1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 for Windows Server 2012 (KB 4074806)

4076493 Security and Quality Rollup for .NET Framework 3.5 SP1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 for Windows Server 2012 (KB 4076493)

4057271 January 2018 Preview of the Quality Rollups for .NET Framework 3.5 SP1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 for Windows Server 2012 (KB 4057271)

4055265 Security and Quality Rollup for  .NET Framework 3.5 SP1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 updates for Windows Server 2012 (KB 4055265)

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 get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the stand-alone package for this update, go to update KB 4074806.

Method 3: Windows Software Update Services (WSUS)

On your WSUS server, follow these steps:

  1. Select Start, select Administrative Tools, and then select Microsoft Windows Server Update Services 3.0.

  2. Expand ComputerName, and then select Action.

  3. Select Import Updates.

  4. WSUS will open a browser window in which you may be prompted to install an ActiveX control. Install the ActiveX control to continue.

  5. After the control is installed, you will see the Microsoft Update Catalog screen. Enter 4074806 in the Search box, and then select Search.

  6. Locate the .NET Framework packages that match the operating systems, languages, and processors in your environment. Select Add to add them to your basket.

  7. When you have selected all the packages that you need, select View Basket.

  8. Select Import to import the packages to your WSUS server.

  9. Select Close after the packages have been imported to return to WSUS.

The updates are now available for installation through WSUS.

Update deployment information

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

20180109 Security update deployment information: January 9, 2018

Update removal information

Note We do not recommend that you remove any security update. To remove this update, use the Programs and Features item in Control Panel.

Update restart information

This update does not require a system restart after you apply it unless files that are being updated are locked or are being used.

Update replacement information

This update replaces updates KB 4049018, KB 4041084, KB4042077, and KB 4057271.

 

File information

File hash

Package name

PackageHashSHA1

PackageHashSHA2

Windows8-RT-KB4054997-x64.msu

50970956E19125DF30E1ADCFD574B4CEB421A0AC

941EFA22E5C416220F9003191CA5C4280A8A5B867F2B2E816A63DBC0BF2B8A63

Windows8-RT-KB4054997-x86.msu

5CE087471774977A2FB70311AD4653814FAAD358

7A4CBFA96460A6FF5536F2B8D657FF37F400FF849D31A40C33A14F9876AD0E12

File attributes

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and 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 times may change when you perform certain operations on the files.

For all x86-based systems

File name

File version

File size

Date

Time

presentationframework.dll

3.0.6920.8773

5,283,840

29-Mar-2017

13:09

reachframework.dll

3.0.6920.8773

532,480

29-Mar-2017

13:09

smdiagnostics.dll

3.0.4506.8789

110,592

01-Dec-2017

13:05

smsvchost.exe

3.0.4506.8789

129,664

01-Dec-2017

13:05

system.data.sqlxml.dll

2.0.50727.8773

745,472

01-Dec-2017

13:05

system.identitymodel.dll

3.0.4506.8789

446,464

01-Dec-2017

13:05

system.management.dll

2.0.50727.8766

389,120

12-Jul-2017

13:09

system.runtime.remoting.dll

2.0.50727.8771

307,200

31-Aug-2017

13:08

system.runtime.serialization.dll

3.0.4506.8789

970,752

01-Dec-2017

13:05

system.runtime.serialization.dll

3.0.4506.8789

970,752

01-Dec-2017

13:05

system.security.dll

2.0.50727.8759

270,336

28-Mar-2017

13:09

system.servicemodel.dll

3.0.4506.8789

5,992,448

01-Dec-2017

13:05

system.servicemodel.washosting.dll

3.0.4506.8789

32,768

01-Dec-2017

13:05

system.servicemodel.dll

3.0.4506.8789

5,992,448

01-Dec-2017

13:05

system.web.regularexpressions.dll

2.0.50727.8762

98,304

07-Apr-2017

13:09

system.xml.dll

2.0.50727.8773

2,056,192

01-Dec-2017

13:05

system.dll

2.0.50727.8770

3,203,072

17-Aug-2017

13:09

windowsbase.dll

3.0.6920.8773

1,257,472

29-Mar-2017

13:09

big5.nlp

66,728

28-Dec-2016

04:28

bopomofo.nlp

82,172

28-Dec-2016

04:28

ksc.nlp

116,756

28-Dec-2016

04:28

mscorlib.dll

2.0.50727.8762

4,554,752

07-Apr-2017

13:09

normidna.nlp

59,342

28-Dec-2016

04:28

normnfc.nlp

45,794

28-Dec-2016

04:28

normnfd.nlp

39,284

28-Dec-2016

04:28

normnfkc.nlp

66,384

28-Dec-2016

04:28

normnfkd.nlp

60,294

28-Dec-2016

04:28

prc.nlp

83,748

28-Dec-2016

04:28

prcp.nlp

83,748

28-Dec-2016

04:28

sortkey.nlp

262,148

28-Dec-2016

04:28

sorttbls.nlp

20,320

28-Dec-2016

04:28

xjis.nlp

28,288

28-Dec-2016

04:28

aspnet_wp.exe

2.0.50727.8762

31,384

07-Apr-2017

13:09

mscordacwks.dll

2.0.50727.8762

990,368

07-Apr-2017

13:09

mscorwks.dll

2.0.50727.8762

5,946,520

07-Apr-2017

13:09

sos.dll

2.0.50727.8762

389,776

07-Apr-2017

13:09

webengine.dll

2.0.50727.8762

437,400

07-Apr-2017

13:09

wminet_utils.dll

2.0.50727.8766

116,896

12-Jul-2017

13:09

presentationcore.dll

3.0.6920.8773

4,222,976

29-Mar-2017

13:09

presentationfontcache.exe.config

161

06-Jul-2012

20:04

wpfgfx_v0300.dll

3.0.6920.8773

1,737,888

29-Mar-2017

13:09

system.data.dll

2.0.50727.8762

2,975,744

06-Apr-2017

20:26

system.printing.dll

3.0.6920.8773

372,736

29-Mar-2017

13:09

system.web.dll

2.0.50727.8762

5,287,936

07-Apr-2017

13:09

servicemonikersupport.dll

3.0.4506.8789

18,096

01-Dec-2017

13:05

system.identitymodel.dll

3.0.4506.8789

446,464

01-Dec-2017

13:05

system.runtime.serialization.dll

3.0.4506.8789

970,752

01-Dec-2017

13:05

system.servicemodel.dll

3.0.4506.8789

5,992,448

01-Dec-2017

13:05

penimc.dll

3.0.6920.8773

68,752

29-Mar-2017

13:09

presentationframework.dll

3.0.6920.8773

5,283,840

29-Mar-2017

13:09

presentationhostdll.dll

3.0.6920.8773

131,248

29-Mar-2017

13:09

reachframework.dll

3.0.6920.8773

532,480

29-Mar-2017

13:09

windowsbase.dll

3.0.6920.8773

1,257,472

29-Mar-2017

13:09

For all x64-based systems

File name

File version

File size

Date

Time

big5.nlp

66,728

04-Jun-2015

22:48

bopomofo.nlp

82,172

04-Jun-2015

22:48

ksc.nlp

116,756

04-Jun-2015

22:48

mscorlib.dll

2.0.50727.8762

4,571,136

07-Apr-2017

13:09

normidna.nlp

59,342

04-Jun-2015

22:48

normnfc.nlp

45,794

04-Jun-2015

22:48

normnfd.nlp

39,284

04-Jun-2015

22:48

normnfkc.nlp

66,384

04-Jun-2015

22:48

normnfkd.nlp

60,294

04-Jun-2015

22:48

prc.nlp

83,748

04-Jun-2015

22:48

prcp.nlp

83,748

04-Jun-2015

22:48

sortkey.nlp

262,148

04-Jun-2015

22:49

sorttbls.nlp

20,320

04-Jun-2015

22:49

xjis.nlp

28,288

04-Jun-2015

22:49

aspnet_wp.exe

2.0.50727.8762

43,160

07-Apr-2017

13:09

mscordacwks.dll

2.0.50727.8762

1,757,344

07-Apr-2017

13:09

mscorwks.dll

2.0.50727.8762

10,007,704

07-Apr-2017

13:09

sos.dll

2.0.50727.8762

486,032

07-Apr-2017

13:09

system.data.sqlxml.dll

2.0.50727.8773

745,472

01-Dec-2017

13:13

system.management.dll

2.0.50727.8766

389,120

12-Jul-2017

13:09

system.runtime.remoting.dll

2.0.50727.8771

307,200

31-Aug-2017

13:09

system.security.dll

2.0.50727.8759

270,336

28-Mar-2017

13:10

system.web.regularexpressions.dll

2.0.50727.8762

98,304

07-Apr-2017

13:09

system.xml.dll

2.0.50727.8773

2,056,192

01-Dec-2017

13:13

system.dll

2.0.50727.8770

3,203,072

17-Aug-2017

13:09

webengine.dll

2.0.50727.8762

746,648

07-Apr-2017

13:09

wminet_utils.dll

2.0.50727.8766

140,960

12-Jul-2017

13:09

presentationcore.dll

3.0.6920.8773

4,006,400

29-Mar-2017

13:09

presentationfontcache.exe.config

161

06-Jul-2012

20:06

wpfgfx_v0300.dll

3.0.6920.8773

2,256,032

29-Mar-2017

13:09

system.data.dll

2.0.50727.8762

3,150,336

06-Apr-2017

20:26

system.printing.dll

3.0.6920.8773

358,400

29-Mar-2017

13:09

system.web.dll

2.0.50727.8762

5,296,128

07-Apr-2017

13:09

servicemonikersupport.dll

3.0.4506.8789

20,144

01-Dec-2017

13:13

smdiagnostics.dll

3.0.4506.8789

94,208

01-Dec-2017

13:13

smsvchost.exe

3.0.4506.8789

117,376

01-Dec-2017

13:13

system.identitymodel.dll

3.0.4506.8789

405,504

01-Dec-2017

13:13

system.runtime.serialization.dll

3.0.4506.8789

847,872

01-Dec-2017

13:13

system.runtime.serialization.dll

3.0.4506.8789

847,872

01-Dec-2017

13:13

system.servicemodel.dll

3.0.4506.8789

5,332,992

01-Dec-2017

13:13

system.servicemodel.washosting.dll

3.0.4506.8789

32,768

01-Dec-2017

13:13

system.servicemodel.dll

3.0.4506.8789

5,332,992

01-Dec-2017

13:13

penimc.dll

3.0.6920.8773

85,648

29-Mar-2017

13:09

presentationframework.dll

3.0.6920.8773

4,640,768

29-Mar-2017

13:09

presentationhostdll.dll

3.0.6920.8773

172,208

29-Mar-2017

13:09

reachframework.dll

3.0.6920.8773

532,480

29-Mar-2017

13:09

windowsbase.dll

3.0.6920.8773

1,118,208

29-Mar-2017

13:09

presentationframework.dll

3.0.6920.8773

5,283,840

29-Mar-2017

13:09

reachframework.dll

3.0.6920.8773

532,480

29-Mar-2017

13:09

smdiagnostics.dll

3.0.4506.8789

110,592

01-Dec-2017

13:05

smsvchost.exe

3.0.4506.8789

129,664

01-Dec-2017

13:05

system.data.sqlxml.dll

2.0.50727.8773

745,472

01-Dec-2017

13:05

system.identitymodel.dll

3.0.4506.8789

446,464

01-Dec-2017

13:05

system.management.dll

2.0.50727.8766

389,120

12-Jul-2017

13:09

system.runtime.remoting.dll

2.0.50727.8771

307,200

31-Aug-2017

13:08

system.runtime.serialization.dll

3.0.4506.8789

970,752

01-Dec-2017

13:05

system.runtime.serialization.dll

3.0.4506.8789

970,752

01-Dec-2017

13:05

system.security.dll

2.0.50727.8759

270,336

28-Mar-2017

13:09

system.servicemodel.dll

3.0.4506.8789

5,992,448

01-Dec-2017

13:05

system.servicemodel.washosting.dll

3.0.4506.8789

32,768

01-Dec-2017

13:05

system.servicemodel.dll

3.0.4506.8789

5,992,448

01-Dec-2017

13:05

system.web.regularexpressions.dll

2.0.50727.8762

98,304

07-Apr-2017

13:09

system.xml.dll

2.0.50727.8773

2,056,192

01-Dec-2017

13:05

system.dll

2.0.50727.8770

3,203,072

17-Aug-2017

13:09

windowsbase.dll

3.0.6920.8773

1,257,472

29-Mar-2017

13:09

big5.nlp

66,728

28-Dec-2016

04:28

bopomofo.nlp

82,172

28-Dec-2016

04:28

ksc.nlp

116,756

28-Dec-2016

04:28

mscorlib.dll

2.0.50727.8762

4,554,752

07-Apr-2017

13:09

normidna.nlp

59,342

28-Dec-2016

04:28

normnfc.nlp

45,794

28-Dec-2016

04:28

normnfd.nlp

39,284

28-Dec-2016

04:28

normnfkc.nlp

66,384

28-Dec-2016

04:28

normnfkd.nlp

60,294

28-Dec-2016

04:28

prc.nlp

83,748

28-Dec-2016

04:28

prcp.nlp

83,748

28-Dec-2016

04:28

sortkey.nlp

262,148

28-Dec-2016

04:28

sorttbls.nlp

20,320

28-Dec-2016

04:28

xjis.nlp

28,288

28-Dec-2016

04:28

aspnet_wp.exe

2.0.50727.8762

31,384

07-Apr-2017

13:09

mscordacwks.dll

2.0.50727.8762

990,368

07-Apr-2017

13:09

mscorwks.dll

2.0.50727.8762

5,946,520

07-Apr-2017

13:09

sos.dll

2.0.50727.8762

389,776

07-Apr-2017

13:09

webengine.dll

2.0.50727.8762

437,400

07-Apr-2017

13:09

wminet_utils.dll

2.0.50727.8766

116,896

12-Jul-2017

13:09

presentationcore.dll

3.0.6920.8773

4,222,976

29-Mar-2017

13:09

presentationfontcache.exe.config

161

06-Jul-2012

20:04

wpfgfx_v0300.dll

3.0.6920.8773

1,737,888

29-Mar-2017

13:09

system.data.dll

2.0.50727.8762

2,975,744

06-Apr-2017

20:26

system.printing.dll

3.0.6920.8773

372,736

29-Mar-2017

13:09

system.web.dll

2.0.50727.8762

5,287,936

07-Apr-2017

13:09

servicemonikersupport.dll

3.0.4506.8789

18,096

01-Dec-2017

13:05

system.identitymodel.dll

3.0.4506.8789

446,464

01-Dec-2017

13:05

system.runtime.serialization.dll

3.0.4506.8789

970,752

01-Dec-2017

13:05

system.servicemodel.dll

3.0.4506.8789

5,992,448

01-Dec-2017

13:05

penimc.dll

3.0.6920.8773

68,752

29-Mar-2017

13:09

presentationframework.dll

3.0.6920.8773

5,283,840

29-Mar-2017

13:09

presentationhostdll.dll

3.0.6920.8773

131,248

29-Mar-2017

13:09

reachframework.dll

3.0.6920.8773

532,480

29-Mar-2017

13:09

windowsbase.dll

3.0.6920.8773

1,257,472

29-Mar-2017

13:09

How to obtain help and support for this security update

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