Summary

This security update resolves the following vulnerabilities:

  • A "remote code execution" vulnerability exists when .NET Framework does not validate input correctly. An attacker who successfully exploits this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts that have full user rights. Users whose accounts are configured to have fewer user rights on the system could be less affected than users who have administrative user rights. To exploit the vulnerability, an attacker would have to pass specific input to an application through susceptible .NET Framework methods. This security update addresses the vulnerability by correcting how .NET Framework validates input. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8284.

  • An "elevation of privilege" vulnerability exists in .NET Framework that could allow an attacker to elevate their user rights level. To exploit the vulnerability, an attacker would first have to access the local computer, and then run a malicious program. This update addresses the vulnerability by correcting how .NET Framework enables COM objects. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8202.

  • A "security feature bypass" vulnerability exists when .NET Framework components do not correctly validate certificates. An attacker could present expired certificates when challenged. This security update addresses the vulnerability by making sure that .NET Framework components correctly validate certificates. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8356.

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

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

4340005 Security Only update 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 4340005)

Known issues

After you install any of the July 2018 .NET Framework Security Updates, a COM component fails to load because of “access denied,” “class not registered,” or “internal failure occurred for unknown reasons” errors. The most common failure signature is the following:

Exception type: System.UnauthorizedAccessException

Message: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

For more information about this issue, see the following article in the Microsoft Knowledge Base: 

4345913 "Access Denied" errors and applications with COM activation fail after installing July 2018 Security and Quality Rollup updates for .NET Framework

To resolve this issue, install the August Security Only update KB 4345680.

How to obtain and install the update

Method 1: Microsoft Update Catalog

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

Method 2: Windows Software Update Services (WSUS)

On your WSUS server, follow these steps:

  1. Click Start, click Administrative Tools, and then click Microsoft Windows Server Update Services 3.0.

  2. Expand ComputerName, and then click Action.

  3. Click Import Updates.

  4. WSUS opens a browser window in which you may be prompted to install an ActiveX control. You must install the ActiveX control to continue.

  5. After the ActiveX control is installed, you see the Microsoft Update Catalog screen. Type 4340005 in the Search box, and then click Search.

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

  7. After you select all the packages that you require, click View Basket.

  8. To import the packages to your WSUS server, click Import.

  9. After the packages are imported, click Close to return to WSUS.

The updates are now available for installation through WSUS.

Update deployment information

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

20180710 Security update deployment information: July 10, 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 does not replace any previously released update.

File information

File hash

Package name

Package hash SHA 1

Package hash SHA 2

Windows8-RT-KB4338601-x64.msu

5B3109B9CF52749DEBF34373EDD2FE1AEDB1936E

272CE8421D2212D928DEB5559ACA677566E1B578C28DCCABBF45BCD43F0FF2E3

Windows8-RT-KB4338601-x86.msu

699F30CFB3F398CC6E2B415A6939C49B6201C9E7

8A4ADC84883DB8C13BEC37E00583CA2680D78EE8E9886A3D86D032E72BEC8A63


The English (United States) version of this 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.

File name

File version

File size

Date

Time

mscorlib.dll

4.0.30319.36450

5,219,992

08-Jun-2018

16:05

normidna.nlp

59,342

04-May-2018

19:43

normnfc.nlp

47,076

04-May-2018

19:43

normnfd.nlp

40,566

04-May-2018

19:43

normnfkc.nlp

67,808

04-May-2018

19:43

normnfkd.nlp

61,718

04-May-2018

19:43

clrjit.dll

4.0.30319.36450

1,234,576

08-Jun-2018

16:05

clr.dll

4.0.30319.36450

10,071,168

08-Jun-2018

16:05

mscordacwks.dll

4.0.30319.36450

1,731,232

08-Jun-2018

16:05

mscordbi.dll

4.0.30319.36450

1,534,616

08-Jun-2018

16:05

msvcp120_clr0400.dll

12.0.52450.36450

678,584

08-Jun-2018

16:05

msvcr120_clr0400.dll

12.0.52450.36450

869,584

08-Jun-2018

16:05

peverify.dll

4.0.30319.36450

225,944

08-Jun-2018

16:05

servicemonikersupport.dll

4.0.30319.36450

28,872

08-Jun-2018

16:05

smdiagnostics.dll

4.0.30319.36450

73,328

08-Jun-2018

16:05

sos.dll

4.0.30319.36450

822,912

08-Jun-2018

16:05

system.activities.dll

4.0.30319.36450

1,582,704

08-Jun-2018

16:05

system.identitymodel.services.dll

4.0.30319.36450

199,912

08-Jun-2018

16:05

system.identitymodel.dll

4.0.30319.36450

1,093,784

08-Jun-2018

16:05

system.runtime.serialization.dll

4.0.30319.36450

1,060,008

08-Jun-2018

16:05

system.servicemodel.channels.dll

4.0.30319.36450

159,624

08-Jun-2018

16:05

system.servicemodel.discovery.dll

4.0.30319.36450

312,712

08-Jun-2018

16:05

system.servicemodel.internals.dll

4.0.30319.36450

254,648

08-Jun-2018

16:05

system.servicemodel.washosting.dll

4.0.30319.36450

39,664

08-Jun-2018

16:05

system.servicemodel.dll

4.0.30319.36450

6,386,832

08-Jun-2018

16:05

system.workflow.activities.dll

4.0.30319.36450

1,068,416

08-Jun-2018

16:05

system.workflow.componentmodel.dll

4.0.30319.36450

1,560,464

08-Jun-2018

16:05

system.workflow.runtime.dll

4.0.30319.36450

503,664

08-Jun-2018

16:05

workflowservicehostperformancecounters.dll

4.0.30319.36450

84,776

12-Jun-2018

05:57

smdiagnostics.dll

4.0.30319.36450

73,328

08-Jun-2018

16:05

system.activities.dll

4.0.30319.36450

1,582,704

08-Jun-2018

16:05

system.identitymodel.services.dll

4.0.30319.36450

199,912

08-Jun-2018

16:05

system.identitymodel.dll

4.0.30319.36450

1,093,784

08-Jun-2018

16:05

system.runtime.serialization.dll

4.0.30319.36450

1,060,008

08-Jun-2018

16:05

system.servicemodel.channels.dll

4.0.30319.36450

159,624

08-Jun-2018

16:05

system.servicemodel.discovery.dll

4.0.30319.36450

312,712

08-Jun-2018

16:05

system.servicemodel.internals.dll

4.0.30319.36450

254,648

08-Jun-2018

16:05

system.servicemodel.washosting.dll

4.0.30319.36450

39,664

08-Jun-2018

16:05

system.servicemodel.dll

4.0.30319.36450

6,386,832

08-Jun-2018

16:05

system.workflow.activities.dll

4.0.30319.36450

1,068,416

08-Jun-2018

16:05

system.workflow.componentmodel.dll

4.0.30319.36450

1,560,464

08-Jun-2018

16:05

system.workflow.runtime.dll

4.0.30319.36450

503,664

08-Jun-2018

16:05

mscorlib.dll

4.0.30319.36450

5,266,072

08-Jun-2018

16:05

normidna.nlp

59,342

15-Nov-2017

00:50

normnfc.nlp

47,076

15-Nov-2017

00:50

normnfd.nlp

40,566

15-Nov-2017

00:50

normnfkc.nlp

67,808

15-Nov-2017

00:50

normnfkd.nlp

61,718

15-Nov-2017

00:50

clrjit.dll

4.0.30319.36450

509,096

08-Jun-2018

16:05

clr.dll

4.0.30319.36450

6,939,264

08-Jun-2018

16:05

mscordacwks.dll

4.0.30319.36450

1,284,256

08-Jun-2018

16:05

mscordbi.dll

4.0.30319.36450

1,108,632

08-Jun-2018

16:05

msvcp120_clr0400.dll

12.0.52450.36450

536,760

08-Jun-2018

16:05

msvcr120_clr0400.dll

12.0.52450.36450

875,704

08-Jun-2018

16:05

peverify.dll

4.0.30319.36450

163,992

08-Jun-2018

16:05

servicemonikersupport.dll

4.0.30319.36450

28,360

08-Jun-2018

16:05

sos.dll

4.0.30319.36450

762,496

08-Jun-2018

16:05

workflowservicehostperformancecounters.dll

4.0.30319.36450

75,536

12-Jun-2018

05:57

The English (United States) version of this 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.

File name

File version

File size

Date

Time

smdiagnostics.dll

4.0.30319.36450

73,328

08-Jun-2018

16:05

system.activities.dll

4.0.30319.36450

1,582,704

08-Jun-2018

16:05

system.identitymodel.services.dll

4.0.30319.36450

199,912

08-Jun-2018

16:05

system.identitymodel.dll

4.0.30319.36450

1,093,784

08-Jun-2018

16:05

system.runtime.serialization.dll

4.0.30319.36450

1,060,008

08-Jun-2018

16:05

system.servicemodel.channels.dll

4.0.30319.36450

159,624

08-Jun-2018

16:05

system.servicemodel.discovery.dll

4.0.30319.36450

312,712

08-Jun-2018

16:05

system.servicemodel.internals.dll

4.0.30319.36450

254,648

08-Jun-2018

16:05

system.servicemodel.washosting.dll

4.0.30319.36450

39,664

08-Jun-2018

16:05

system.servicemodel.dll

4.0.30319.36450

6,386,832

08-Jun-2018

16:05

system.workflow.activities.dll

4.0.30319.36450

1,068,416

08-Jun-2018

16:05

system.workflow.componentmodel.dll

4.0.30319.36450

1,560,464

08-Jun-2018

16:05

system.workflow.runtime.dll

4.0.30319.36450

503,664

08-Jun-2018

16:05

mscorlib.dll

4.0.30319.36450

5,266,072

08-Jun-2018

16:05

normidna.nlp

59,342

15-Nov-2017

00:50

normnfc.nlp

47,076

15-Nov-2017

00:50

normnfd.nlp

40,566

15-Nov-2017

00:50

normnfkc.nlp

67,808

15-Nov-2017

00:50

normnfkd.nlp

61,718

15-Nov-2017

00:50

clrjit.dll

4.0.30319.36450

509,096

08-Jun-2018

16:05

clr.dll

4.0.30319.36450

6,939,264

08-Jun-2018

16:05

mscordacwks.dll

4.0.30319.36450

1,284,256

08-Jun-2018

16:05

mscordbi.dll

4.0.30319.36450

1,108,632

08-Jun-2018

16:05

msvcp120_clr0400.dll

12.0.52450.36450

536,760

08-Jun-2018

16:05

msvcr120_clr0400.dll

12.0.52450.36450

875,704

08-Jun-2018

16:05

peverify.dll

4.0.30319.36450

163,992

08-Jun-2018

16:05

servicemonikersupport.dll

4.0.30319.36450

28,360

08-Jun-2018

16:05

sos.dll

4.0.30319.36450

762,496

08-Jun-2018

16:05

workflowservicehostperformancecounters.dll

4.0.30319.36450

75,536

12-Jun-2018

05:57

 

How to obtain help and support for this security update

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