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 7 SP1 and Windows Server 2008 R2 SP1, see the following article in the Microsoft Knowledge Base:

4340004 Security Only update for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 for Windows 7 SP1 and Server 2008 R2 (KB 4340004)

For more information about this security update as it relates to Windows Server 2008, see the following article in the Microsoft Knowledge Base:

4340007 Security Only update for .NET Framework 2.0 SP2, 3.0 SP2, 4.5.2, and 4.6 for Windows Server 2008 (KB 4340007)

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 4345679.

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.

  • For Windows 7 SP1 and Windows Server 2008 R2 SP1, download update 4340004.

  • For Windows Server 2008, download update 4340007.

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. For Windows 7 SP1 and Windows Server 2008 R2 SP1, type 4340004 or for Windows Server 2008, type 4340007 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

NDP45-KB4338602-x64.exe

03744F9AF275ED2F72031861DBE4F5FFE38D968A

73455B7B76B595023623ECFFE4FEFAD3709001A98C70C1B31E23D8251F8AAD8E

NDP45-KB4338602-x86.exe

30EA4776174EA4427CE2073F9BE71426D7B40AF9

0459D12797DBE8030BB1CAAA8CE1590B5845CC62BA5CB7636062B55909F51A3D


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

clr.dll

4.0.30319.36450

10,071,168

07-Jun-2018

21:59

clr.dll

4.0.30319.36450

6,939,264

07-Jun-2018

21:37

clrjit.dll

4.0.30319.36450

1,234,576

07-Jun-2018

21:59

clrjit.dll

4.0.30319.36450

509,096

07-Jun-2018

21:37

mscordacwks.dll

4.0.30319.36450

1,731,232

07-Jun-2018

21:59

mscordacwks.dll

4.0.30319.36450

1,284,256

07-Jun-2018

21:37

mscordbi.dll

4.0.30319.36450

1,534,616

07-Jun-2018

21:59

mscordbi.dll

4.0.30319.36450

1,108,632

07-Jun-2018

21:37

mscorlib.dll

4.0.30319.36450

5,219,992

07-Jun-2018

21:59

mscorlib.dll

4.0.30319.36450

5,266,072

07-Jun-2018

21:37

peverify.dll

4.0.30319.36450

225,944

07-Jun-2018

21:59

peverify.dll

4.0.30319.36450

163,992

07-Jun-2018

21:37

ServiceMonikerSupport.dll

4.0.30319.36450

28,872

07-Jun-2018

21:59

ServiceMonikerSupport.dll

4.0.30319.36450

28,360

07-Jun-2018

21:37

SMDiagnostics.dll

4.0.30319.36450

73,328

07-Jun-2018

21:37

SOS.dll

4.0.30319.36450

822,912

07-Jun-2018

21:59

SOS.dll

4.0.30319.36450

762,496

07-Jun-2018

21:37

System.Activities.dll

4.0.30319.36450

1,582,704

07-Jun-2018

21:37

System.IdentityModel.dll

4.0.30319.36450

1,093,784

07-Jun-2018

21:37

System.IdentityModel.Services.dll

4.0.30319.36450

199,912

07-Jun-2018

21:37

System.Runtime.Serialization.dll

4.0.30319.36450

1,060,008

07-Jun-2018

21:37

System.ServiceModel.Channels.dll

4.0.30319.36450

159,624

07-Jun-2018

21:37

System.ServiceModel.Discovery.dll

4.0.30319.36450

312,712

07-Jun-2018

21:37

System.ServiceModel.dll

4.0.30319.36450

6,386,832

07-Jun-2018

21:37

System.ServiceModel.Internals.dll

4.0.30319.36450

254,648

07-Jun-2018

21:37

System.ServiceModel.WasHosting.dll

4.0.30319.36450

39,664

07-Jun-2018

21:37

System.Workflow.Activities.dll

4.0.30319.36450

1,068,416

07-Jun-2018

21:37

System.Workflow.ComponentModel.dll

4.0.30319.36450

1,560,464

07-Jun-2018

21:37

System.Workflow.Runtime.dll

4.0.30319.36450

503,664

07-Jun-2018

21:37

WorkflowServiceHostPerformanceCounters.dll

4.0.30319.36450

84,776

07-Jun-2018

21:59

WorkflowServiceHostPerformanceCounters.dll

4.0.30319.36450

75,536

07-Jun-2018

21:37

msvcp120_clr0400.dll

12.0.52450.36450

678,584

07-Jun-2018

21:59

msvcp120_clr0400.dll

12.0.52450.36450

536,760

07-Jun-2018

21:37

msvcr120_clr0400.dll

12.0.52450.36450

869,584

07-Jun-2018

21:59

msvcr120_clr0400.dll

12.0.52450.36450

875,704

07-Jun-2018

21:37

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

clr.dll

4.0.30319.36450

6,939,264

07-Jun-2018

21:37

clrjit.dll

4.0.30319.36450

509,096

07-Jun-2018

21:37

mscordacwks.dll

4.0.30319.36450

1,284,256

07-Jun-2018

21:37

mscordbi.dll

4.0.30319.36450

1,108,632

07-Jun-2018

21:37

mscorlib.dll

4.0.30319.36450

5,266,072

07-Jun-2018

21:37

peverify.dll

4.0.30319.36450

163,992

07-Jun-2018

21:37

ServiceMonikerSupport.dll

4.0.30319.36450

28,360

07-Jun-2018

21:37

SMDiagnostics.dll

4.0.30319.36450

73,328

07-Jun-2018

21:37

SOS.dll

4.0.30319.36450

762,496

07-Jun-2018

21:37

System.Activities.dll

4.0.30319.36450

1,582,704

07-Jun-2018

21:37

System.IdentityModel.dll

4.0.30319.36450

1,093,784

07-Jun-2018

21:37

System.IdentityModel.Services.dll

4.0.30319.36450

199,912

07-Jun-2018

21:37

System.Runtime.Serialization.dll

4.0.30319.36450

1,060,008

07-Jun-2018

21:37

System.ServiceModel.Channels.dll

4.0.30319.36450

159,624

07-Jun-2018

21:37

System.ServiceModel.Discovery.dll

4.0.30319.36450

312,712

07-Jun-2018

21:37

System.ServiceModel.dll

4.0.30319.36450

6,386,832

07-Jun-2018

21:37

System.ServiceModel.Internals.dll

4.0.30319.36450

254,648

07-Jun-2018

21:37

System.ServiceModel.WasHosting.dll

4.0.30319.36450

39,664

07-Jun-2018

21:37

System.Workflow.Activities.dll

4.0.30319.36450

1,068,416

07-Jun-2018

21:37

System.Workflow.ComponentModel.dll

4.0.30319.36450

1,560,464

07-Jun-2018

21:37

System.Workflow.Runtime.dll

4.0.30319.36450

503,664

07-Jun-2018

21:37

WorkflowServiceHostPerformanceCounters.dll

4.0.30319.36450

75,536

07-Jun-2018

21:37

msvcp120_clr0400.dll

12.0.52450.36450

536,760

07-Jun-2018

21:37

msvcr120_clr0400.dll

12.0.52450.36450

875,704

07-Jun-2018

21:37

 

How to obtain help and support for this security update

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