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Applies to:

Microsoft .NET Framework 4.8

Summary

A remote code execution vulnerability exists in .NET software when the software fails to check the source markup of a file. An Authentication Bypass vulnerability exists in WCF and WIF, allowing signing of SAML tokens with arbitrary symmetric keys. This vulnerability allows an attacker to impersonate another user. The vulnerability exists in WCF, WIF 3.5 and above in .NET Framework, WIF 1.0 component in Windows, WIF Nuget package, and WIF implementation in Sharepoint. An information disclosure vulnerability exists when Exchange and Azure Active Directory allow creation of entities with Display Names having non-printable characters.

To learn more about the vulnerabilities, go to the following Common Vulnerabilities and Exposures (CVE).

Additional information about this update

The following articles contain additional information about this update as it relates to individual product versions.

  • 4507412 Description of the Security Only Update for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 (KB4507412)

How to obtain and install the update

Method 1: Microsoft Update Catalog

To get the standalone 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. 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 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 4507412 into 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. After you select all the packages that you require, select View Basket.

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

  9. After the packages are imported, select Close 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:

20190709 Security update deployment information: July 9, 2019

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 previously released updates 4457915.


File information
The English (United States) version of this update 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.

Windows Server 2012 file information

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

File information

File hash information

File name

SHA1 hash

SHA256 hash

Windows8-RT-KB4506954-x64.msu

49C303DA183087237F8AA69059E4986F4B65044C

B0A25A4C926C2C65775DAEF10D09035D9D9E77BAC581EBF20F025F5E560B85A8

For all supported x64-based versions

File name

File version

File size

Date

Time

Platform

Servicemodel.mof

Not applicable

88,383

13-Mar-2019

03:36

Not applicable

Servicemodel.mof.uninstall

Not applicable

896

13-Mar-2019

03:36

Not applicable

Servicemonikersupport.dll

4.8.3825.0

34,560

01-Jun-2019

02:34

x64

Smdiagnostics.dll

4.8.3825.0

73,544

01-Jun-2019

02:36

x86

System.activities.dll

4.8.3825.0

1,533,344

01-Jun-2019

02:36

x86

System.identitymodel.services.dll

4.8.3825.0

198,400

01-Jun-2019

02:36

x86

System.identitymodel.dll

4.8.3825.0

1,093,960

01-Jun-2019

02:36

x86

System.runtime.serialization.dll

4.8.3825.0

1,054,112

01-Jun-2019

02:36

x86

System.servicemodel.channels.dll

4.8.3825.0

157,744

01-Jun-2019

02:36

x86

System.servicemodel.discovery.dll

4.8.3825.0

308,272

01-Jun-2019

02:36

x86

System.servicemodel.internals.dll

4.8.3825.0

253,344

01-Jun-2019

02:36

x86

System.servicemodel.washosting.dll

4.8.3825.0

40,192

01-Jun-2019

02:36

x86

System.servicemodel.dll

4.8.3825.0

6,386,504

01-Jun-2019

02:36

x86

System.workflow.activities.dll

4.8.3825.0

1,050,368

01-Jun-2019

02:36

x86

System.workflow.componentmodel.dll

4.8.3825.0

1,556,528

01-Jun-2019

02:36

x86

System.workflow.runtime.dll

4.8.3825.0

502,528

01-Jun-2019

02:36

x86

Workflowservicehostperformancecounters.dll

4.8.3825.0

102,168

01-Jun-2019

02:34

x64

Smdiagnostics.dll

4.8.3825.0

73,544

01-Jun-2019

02:36

x86

System.activities.dll

4.8.3825.0

1,533,344

01-Jun-2019

02:36

x86

System.identitymodel.services.dll

4.8.3825.0

198,400

01-Jun-2019

02:36

x86

System.identitymodel.dll

4.8.3825.0

1,093,960

01-Jun-2019

02:36

x86

System.runtime.serialization.dll

4.8.3825.0

1,054,112

01-Jun-2019

02:36

x86

System.servicemodel.channels.dll

4.8.3825.0

157,744

01-Jun-2019

02:36

x86

System.servicemodel.discovery.dll

4.8.3825.0

308,272

01-Jun-2019

02:36

x86

System.servicemodel.internals.dll

4.8.3825.0

253,344

01-Jun-2019

02:36

x86

System.servicemodel.washosting.dll

4.8.3825.0

40,192

01-Jun-2019

02:36

x86

System.servicemodel.dll

4.8.3825.0

6,386,504

01-Jun-2019

02:36

x86

System.workflow.activities.dll

4.8.3825.0

1,050,368

01-Jun-2019

02:36

x86

System.workflow.componentmodel.dll

4.8.3825.0

1,556,528

01-Jun-2019

02:36

x86

System.workflow.runtime.dll

4.8.3825.0

502,528

01-Jun-2019

02:36

x86

Servicemonikersupport.dll

4.8.3825.0

31,488

01-Jun-2019

02:36

x86

Workflowservicehostperformancecounters.dll

4.8.3825.0

88,856

01-Jun-2019

02:36

x86

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