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Applies to:

Microsoft .NET Framework 2.0 Microsoft .NET Framework 3.0

Note: Revised on Jun 20, 2023 to add resolution to known issue.

The February 14, 2023 update for Windows Server 2008 SP2 includes cumulative reliability improvements in .NET Framework 2.0, 3.0. We recommend that you apply this update as part of your regular maintenance routines. Verify that you have installed the required updates listed in the How to get this update section before installing this update.

Summary

CVE-2023-21722 - .NET Framework Denial of Service Vulnerability
This security update addresses a vulnerability where the Visual Studio WMI Setup Provider Installer can be used by a low level, local attacker to corrupt local files that SYSTEM can writ to, leading to a potential denial of service. For more information please see CVE-2023-21722.

Additional information about this update

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

  • 5022786 Description of the Security Only Update for .NET Framework 2.0, 3.0, 4.6.2 for Windows Server 2008 SP2 (KB5022786)

Known issues in this update

Symptom

After installing this update, WPF apps may have a change in behavior. For more information about this issue, see KB5022083

Workaround

To mitigate this issue, see KB5022083.

Resolution

This issue has been resolved in the June 13, 2023 Security and Quality Rollup and Cumulative Update.

If you used any workaround or mitigations for this issue, they are no longer needed, and we recommend you remove them. To remove workaround review the workaround or alternative workaround which was applied for instructions. The workaround should be removed prior to installing the June update.

How to obtain and install the update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 2.0, 3.0 installed.

Install this update

Release Channel

Available

Next Step

Microsoft Update Catalog

Yes

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Windows Server Update Services (WSUS)

Yes

This individual .NET Framework product update will be installed, as applicable, by applying the operating system update. For more information about operating system updates see additional information about this update section.

Restart requirement

You may need to restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.

Update deployment information

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

20230214 Security update deployment information: February 14, 2023

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.

File Information

File hash information

File name

SHA256 hash

Windows6.0-KB5022529-x64.msu

1258BE3F62161EAB07A5798EAEC4AA7CA6ED37C7AF8E70B25A8257138C598568

Windows6.0-KB5022529-x86.msu

6B5935D83EEE23AAB68C2EFA38B573F54F033942EBDB99E71FF83F83B0F0BB44

File name

File version

File size

Date

Time

Platform

Big5.nlp

Not applicable

66,728

23-Dec-2022

01:12

Not applicable

Bopomofo.nlp

Not applicable

82,172

23-Dec-2022

01:12

Not applicable

Ksc.nlp

Not applicable

116,756

23-Dec-2022

01:12

Not applicable

Mscorlib.dll

2.0.50727.8966

4,575,232

23-Dec-2022

01:12

x64

Normidna.nlp

Not applicable

59,342

23-Dec-2022

01:12

Not applicable

Normnfc.nlp

Not applicable

45,794

23-Dec-2022

01:12

Not applicable

Normnfd.nlp

Not applicable

39,284

23-Dec-2022

01:12

Not applicable

Normnfkc.nlp

Not applicable

66,384

23-Dec-2022

01:12

Not applicable

Normnfkd.nlp

Not applicable

60,294

23-Dec-2022

01:12

Not applicable

Prc.nlp

Not applicable

83,748

23-Dec-2022

01:12

Not applicable

Prcp.nlp

Not applicable

83,748

23-Dec-2022

01:12

Not applicable

Sortkey.nlp

Not applicable

262,148

23-Dec-2022

01:12

Not applicable

Sorttbls.nlp

Not applicable

20,320

23-Dec-2022

01:12

Not applicable

Xjis.nlp

Not applicable

28,288

23-Dec-2022

01:12

Not applicable

Mscordacwks.dll

2.0.50727.8966

1,760,672

23-Dec-2022

01:12

x64

Mscorwks.dll

2.0.50727.8966

10,626,464

23-Dec-2022

01:12

x64

Sos.dll

2.0.50727.8966

489,376

23-Dec-2022

01:12

x64

Big5.nlp

Not applicable

66,728

23-Dec-2022

01:13

Not applicable

Bopomofo.nlp

Not applicable

82,172

23-Dec-2022

01:13

Not applicable

Ksc.nlp

Not applicable

116,756

23-Dec-2022

01:13

Not applicable

Mscorlib.dll

2.0.50727.8966

4,558,848

23-Dec-2022

01:13

x86

Normidna.nlp

Not applicable

59,342

23-Dec-2022

01:13

Not applicable

Normnfc.nlp

Not applicable

45,794

23-Dec-2022

01:13

Not applicable

Normnfd.nlp

Not applicable

39,284

23-Dec-2022

01:13

Not applicable

Normnfkc.nlp

Not applicable

66,384

23-Dec-2022

01:13

Not applicable

Normnfkd.nlp

Not applicable

60,294

23-Dec-2022

01:13

Not applicable

Prc.nlp

Not applicable

83,748

23-Dec-2022

01:13

Not applicable

Prcp.nlp

Not applicable

83,748

23-Dec-2022

01:13

Not applicable

Sortkey.nlp

Not applicable

262,148

23-Dec-2022

01:13

Not applicable

Sorttbls.nlp

Not applicable

20,320

23-Dec-2022

01:13

Not applicable

Xjis.nlp

Not applicable

28,288

23-Dec-2022

01:13

Not applicable

Mscordacwks.dll

2.0.50727.8966

993,696

23-Dec-2022

01:13

x86

Mscorwks.dll

2.0.50727.8966

6,414,224

23-Dec-2022

01:13

x86

Sos.dll

2.0.50727.8966

393,120

23-Dec-2022

01:13

x86

File name

File version

File size

Date

Time

Platform

Big5.nlp

Not applicable

66,728

23-Dec-2022

01:13

Not applicable

Bopomofo.nlp

Not applicable

82,172

23-Dec-2022

01:13

Not applicable

Ksc.nlp

Not applicable

116,756

23-Dec-2022

01:13

Not applicable

Mscorlib.dll

2.0.50727.8966

4,558,848

23-Dec-2022

01:13

x86

Normidna.nlp

Not applicable

59,342

23-Dec-2022

01:13

Not applicable

Normnfc.nlp

Not applicable

45,794

23-Dec-2022

01:13

Not applicable

Normnfd.nlp

Not applicable

39,284

23-Dec-2022

01:13

Not applicable

Normnfkc.nlp

Not applicable

66,384

23-Dec-2022

01:13

Not applicable

Normnfkd.nlp

Not applicable

60,294

23-Dec-2022

01:13

Not applicable

Prc.nlp

Not applicable

83,748

23-Dec-2022

01:13

Not applicable

Prcp.nlp

Not applicable

83,748

23-Dec-2022

01:13

Not applicable

Sortkey.nlp

Not applicable

262,148

23-Dec-2022

01:13

Not applicable

Sorttbls.nlp

Not applicable

20,320

23-Dec-2022

01:13

Not applicable

Xjis.nlp

Not applicable

28,288

23-Dec-2022

01:13

Not applicable

Mscordacwks.dll

2.0.50727.8966

993,696

23-Dec-2022

01:13

x86

Mscorwks.dll

2.0.50727.8966

6,414,224

23-Dec-2022

01:13

x86

Sos.dll

2.0.50727.8966

393,120

23-Dec-2022

01:13

x86

Prerequisites

To apply this update, you must have .NET Framework 2.0, 3.0 installed.

Restart requirement

You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.

How to obtain help and support for this update

Need more help?

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