Security Only Update for .NET Framework 4.5.2 for Windows 7 SP1 and Server 2008 R2 SP1 and Server 2008 (KB4495593)

Applies to:

Microsoft .NET Framework 4.5.2

Summary

Denial of service vulnerabilities exist when .NET Framework improperly handles objects in heap memory, or when .NET Framework and .NET Core improperly process RegEx strings.

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

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 update

For more information about this update as it relates to its particular Windows version(s), see the following article(s) in the Microsoft Knowledge Base:.

  • 4498961 Security Only Update for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 7 SP1 and Server 2008 R2 SP1 and Server 2008 (KB4498961)

  • 4498964 Security Only Update for .NET Framework 2.0, 3.0, 4.5.2, 4.6, 4.8 for Windows Server 2008 SP2 (KB4498964)

Note: This update also contains changes needed to support the new Japanese Era, as described in update 4488669. The known issue described in update 4488669 is no longer present in this update. This update can be used as a replacement to update 4488669.

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 4498961 for Windows 7 SP1 and Server 2008 R2 SP1 or type 4498964 for Windows Server 2008 SP2 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. 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:

20190514Security update deployment information: February 12, 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 4481481 and 4481487.

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.

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

NDP45-KB4495593-x64.exe

4AD53F9B9484CF889473480E0DB7F670A9658C21

3DC88A6F46FFFDC834BF684218CB7DE8ABD54DBC91B9B61A642EE80FC21EFB5E

NDP45-KB4495593-x86.exe

E805351725E28E7D9C67AC0F1E44CF58DD32C66A

BE1205931E65FABDD6225329E0A3C8BDAE9E794F6FA31D8DB6BBB6A302B4F299

For all supported x64-based versions

File name

File version

File size

Date

Time

clr.dll

4.0.30319.36543

10,070,064

29-Mar-2019

20:04

clr.dll

4.0.30319.36543

6,938,160

29-Mar-2019

19:48

clrjit.dll

4.0.30319.36543

1,234,480

29-Mar-2019

20:04

clrjit.dll

4.0.30319.36543

508,976

29-Mar-2019

19:48

mscordacwks.dll

4.0.30319.36543

1,731,112

29-Mar-2019

20:04

mscordacwks.dll

4.0.30319.36543

1,284,144

29-Mar-2019

19:48

mscordbi.dll

4.0.30319.36543

1,533,488

29-Mar-2019

20:04

mscordbi.dll

4.0.30319.36543

1,107,504

29-Mar-2019

19:48

mscorlib.dll

4.0.30319.36543

5,221,936

29-Mar-2019

20:04

mscorlib.dll

4.0.30319.36543

5,268,016

29-Mar-2019

19:48

peverify.dll

4.0.30319.36543

225,840

29-Mar-2019

20:04

peverify.dll

4.0.30319.36543

163,888

29-Mar-2019

19:49

SOS.dll

4.0.30319.36543

822,832

29-Mar-2019

20:04

SOS.dll

4.0.30319.36543

762,416

29-Mar-2019

19:48

System.dll

4.0.30319.36543

3,493,280

29-Mar-2019

19:49

msvcp120_clr0400.dll

12.0.52543.36543

678,448

29-Mar-2019

20:04

msvcp120_clr0400.dll

12.0.52543.36543

536,624

29-Mar-2019

19:48

msvcr120_clr0400.dll

12.0.52543.36543

869,424

29-Mar-2019

20:04

msvcr120_clr0400.dll

12.0.52543.36543

875,568

29-Mar-2019

19:48

For all supported x86-based versions

File name

File version

File size

Date

Time

clr.dll

4.0.30319.36543

6,938,160

29-Mar-2019

19:48

clrjit.dll

4.0.30319.36543

508,976

29-Mar-2019

19:48

mscordacwks.dll

4.0.30319.36543

1,284,144

29-Mar-2019

19:48

mscordbi.dll

4.0.30319.36543

1,107,504

29-Mar-2019

19:48

mscorlib.dll

4.0.30319.36543

5,268,016

29-Mar-2019

19:48

peverify.dll

4.0.30319.36543

163,888

29-Mar-2019

19:49

SOS.dll

4.0.30319.36543

762,416

29-Mar-2019

19:48

System.dll

4.0.30319.36543

3,493,280

29-Mar-2019

19:49

msvcp120_clr0400.dll

12.0.52543.36543

536,624

29-Mar-2019

19:48

msvcr120_clr0400.dll

12.0.52543.36543

875,568

29-Mar-2019

19:48

Information about protection and security

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