Applies To.NET

Applies to:

Microsoft .NET Framework 3.5.1

Note:

Revised June 15, 2023 to correct the wording of the known issue to X.509 certificate

Revised on June 20, 2023 to fix the link for CVE-2023-32030

Revised on July 5th, 2023 to add resolution to known issue.

REMINDER Windows Embedded 7 Standard and Windows Server 2008 R2 SP1 have reached the end of mainstream support and are now in extended security update (ESU) support.

Starting in July 2020, there will no longer be optional, non-security releases (known as "C" releases) for this operating system. Operating systems in extended support have only cumulative monthly security updates (known as the "B" or Update Tuesday release).

Verify that you have installed the required updates listed in the How to get this update section before installing this update. 

Customers who have purchased the Extended Security Update (ESU) for on-premises versions of these operating systems must follow the procedures in KB4522133 to continue receiving security updates after extended support ends on January 14, 2020. For more information on ESU and which editions are supported, see KB4497181. For more information, see the ESU blog.

The June 13, 2023 update for Windows Embedded 7 Standard and Windows Server 2008 R2 SP1 includes security improvements in .NET Framework 3.5.1. 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-2023-29326 - .NET Framework Remote Code Execution Vulnerability This security update addresses a vulnerability in WPF where the BAML offers other ways to instantiate types that leads to an elevation of privilege. For more information see CVE-2023-29326.

CVE-2023-24895 - .NET Framework Remote Code Execution Vulnerability This security update addresses a vulnerability in the WPF XAML parser where an unsandboxed parser can lead to remote code execution. For more information see CVE-2023-24895.

CVE-2023-24936 - .NET Framework Elevation of Privilege Vulnerability This security update addresses a vulnerability in bypass restrictions when deserializing a DataSet or DataTable from XML, leading to an elevation of privilege. For more information see CVE-2023-24936.

CVE-2023-29331 - .NET Framework Denial of Service Vulnerability This security update addresses a vulnerability where the AIA fetching process for client certificates can lead to denial of service. For more information see CVE 2023-29331.

CVE-2023-32030 - .NET Framework Denial of Service Vulnerability This security update addresses a vulnerability where X509Certificate2 file handling can lead to denial of service. For more information see CVE-2023-32030.

Additional information about this update

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

  • 5027531 Description of the Security Only Update for .NET Framework 3.5.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Embedded 7 Standard and Windows Server 2008 R2 SP1 (KB5027531)

Known issues in this update

Symptom

This update may impact how .NET Framework runtime imports X.509 Certificates. For more information about this issue, see KB5025823

Workaround

To mitigate this issue, see KB5025823.

Symptom

This update may impact scenarios where .NET framework 3.5 scenarios might crash during startup whenever an instrumenting profiler is active

Workaround

To mitigate this issue, see KB5028920.

How to get this update

Before installing this update

Prerequisite:

To apply this update, you must have .NET Framework 3.5.1 installed.

You must install the updates listed below and restart your device before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup and applying Microsoft security fixes.

  1. The March 12, 2019 servicing stack update (SSU) (KB4490628). To get the standalone package for this SSU, search for it in the Microsoft Update Catalog. This update is required to install updates that are only SHA-2 signed.

  2. The latest SHA-2 update (KB4474419) released September 10, 2019 or newer update. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. This update is required to install updates that are only SHA-2 signed. For more information on SHA-2 updates, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.

  3. To get this security update, you must reinstall the "Extended Security Updates (ESU) Licensing Preparation Package" (KB5016892) for Windows Server 2008 R2 SP1 that is dated August 8, 2022 even if you previously installed the ESU key. The ESU licensing preparation package will be offered to you from WSUS. To get the standalone package for ESU licensing preparation package, search for it in the Microsoft Update Catalog.

  4. After you install the items above, we strongly recommend that you install the latest SSU.

    For Windows Server 2008 R2 SP1, you must have the servicing stack update (SSU) (KB5017397) that is dated September 13, 2022 or later installed. For more information about the latest SSU updates, see ADV990001 | Latest Servicing Stack Updates. If you use Windows Update, the latest SSU will be offered to you automatically if you are an ESU customer. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

  5. Download the ESU MAK add-on key from the VLSC portal and deploy and activate the ESU MAK add-on key. If you use the Volume Activation Management Tool  (VAMT) to deploy and activate keys, follow the instructions here.

    IMPORTANT You do not need an additional key for deployment of the following:

    • You do not need to deploy an additional ESU key for Azure virtual machines (VMs), Azure Stack HCI.

    • For other Azure products such as Azure VMWare, Azure Nutanix solution Azure Stack (Hub, Edge), or for bring-your-own images on Azure for Windows Server 2008 SP2, and Windows Server 2008 R2 SP1 you do need to deploy the ESU key.  The steps to install, activate, and deploy ESUs are the same for the fourth year of ESU coverage.

Install this update

Release Channel

Available

Next Step

Windows Update and Microsoft Update

No

See the other options below.

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:

20230613 Security update deployment information: June 13, 2023

File Information

File hash information

File name

SHA256 hash

windows6.1-kb5027115-x86.msu

5A2BD7C75CA9217BFE51537ECEAD9E7606DC97B580A2F44C8DD7DABF75359449

windows6.1-kb5027115-x64.msu

8D9D644D68BAD534C53A58133DD7854EF6FF734FE94F9CAE2F1CA4B78448315B

File name

File version

File size

Date

Time

Platform

Presentationframework.dll

3.0.6920.8954

5,292,032

16-May-2023

03:06

x86

Reachframework.dll

3.0.6920.8954

536,576

16-May-2023

03:06

x86

System.dll

2.0.50727.8970

3,211,264

13-May-2023

01:41

x86

Windowsbase.dll

3.0.6920.8954

1,257,472

16-May-2023

03:06

x86

Big5.nlp

Not applicable

66,728

13-Apr-2023

01:05

Not applicable

Bopomofo.nlp

Not applicable

82,172

13-Apr-2023

01:05

Not applicable

Ksc.nlp

Not applicable

116,756

13-Apr-2023

01:05

Not applicable

Mscorlib.dll

2.0.50727.8970

4,628,480

13-May-2023

01:41

x86

Normidna.nlp

Not applicable

59,342

13-Apr-2023

01:05

Not applicable

Normnfc.nlp

Not applicable

45,794

13-Apr-2023

01:05

Not applicable

Normnfd.nlp

Not applicable

39,284

13-Apr-2023

01:05

Not applicable

Normnfkc.nlp

Not applicable

66,384

13-Apr-2023

01:05

Not applicable

Normnfkd.nlp

Not applicable

60,294

13-Apr-2023

01:05

Not applicable

Prc.nlp

Not applicable

83,748

13-Apr-2023

01:05

Not applicable

Prcp.nlp

Not applicable

83,748

13-Apr-2023

01:05

Not applicable

Sortkey.nlp

Not applicable

262,148

13-Apr-2023

01:05

Not applicable

Sorttbls.nlp

Not applicable

20,320

13-Apr-2023

01:05

Not applicable

Xjis.nlp

Not applicable

28,288

13-Apr-2023

01:05

Not applicable

Mscordacwks.dll

2.0.50727.8970

993,728

13-May-2023

01:41

x86

Mscorwks.dll

2.0.50727.8970

6,414,264

13-May-2023

01:41

x86

Sos.dll

2.0.50727.8970

393,152

13-May-2023

01:41

x86

Presentationcore.dll

3.0.6920.8954

4,222,976

16-May-2023

03:06

x86

Presentationfontcache.exe.config

Not applicable

161

01-Apr-2023

01:06

Not applicable

Wpfgfx_v0300.dll

3.0.6920.8954

1,741,192

16-May-2023

03:06

x86

System.data.dll

2.0.50727.8970

2,983,936

13-May-2023

01:41

x86

System.printing.dll

3.0.6920.8954

372,736

16-May-2023

03:06

x86

Penimc.dll

3.0.6920.8954

72,128

16-May-2023

03:06

x86

Presentationframework.dll

3.0.6920.8954

5,292,032

16-May-2023

03:06

x86

Presentationhostdll.dll

3.0.6920.8954

134,552

16-May-2023

03:06

x86

Reachframework.dll

3.0.6920.8954

536,576

16-May-2023

03:06

x86

Windowsbase.dll

3.0.6920.8954

1,257,472

16-May-2023

03:06

x86

File name

File version

File size

Date

Time

Platform

Big5.nlp

Not applicable

66,728

12-Apr-2023

00:05

Not applicable

Bopomofo.nlp

Not applicable

82,172

12-Apr-2023

00:05

Not applicable

Ksc.nlp

Not applicable

116,756

12-Apr-2023

00:05

Not applicable

Mscorlib.dll

2.0.50727.8970

4,644,864

13-May-2023

01:42

x64

Normidna.nlp

Not applicable

59,342

12-Apr-2023

00:05

Not applicable

Normnfc.nlp

Not applicable

45,794

12-Apr-2023

00:05

Not applicable

Normnfd.nlp

Not applicable

39,284

12-Apr-2023

00:05

Not applicable

Normnfkc.nlp

Not applicable

66,384

12-Apr-2023

00:05

Not applicable

Normnfkd.nlp

Not applicable

60,294

12-Apr-2023

00:05

Not applicable

Prc.nlp

Not applicable

83,748

12-Apr-2023

00:05

Not applicable

Prcp.nlp

Not applicable

83,748

12-Apr-2023

00:05

Not applicable

Sortkey.nlp

Not applicable

262,148

12-Apr-2023

00:05

Not applicable

Sorttbls.nlp

Not applicable

20,320

12-Apr-2023

00:05

Not applicable

Xjis.nlp

Not applicable

28,288

12-Apr-2023

00:05

Not applicable

Mscordacwks.dll

2.0.50727.8970

1,760,664

13-May-2023

01:42

x64

Mscorwks.dll

2.0.50727.8970

10,626,456

13-May-2023

01:42

x64

Sos.dll

2.0.50727.8970

489,360

13-May-2023

01:42

x64

System.dll

2.0.50727.8970

3,211,264

13-May-2023

01:42

x86

Presentationcore.dll

3.0.6920.8954

4,006,400

16-May-2023

03:07

x64

Presentationfontcache.exe.config

Not applicable

161

01-Apr-2023

01:06

Not applicable

Wpfgfx_v0300.dll

3.0.6920.8954

2,259,352

16-May-2023

03:07

x64

System.data.dll

2.0.50727.8970

3,158,016

13-May-2023

01:42

x64

System.printing.dll

3.0.6920.8954

358,400

16-May-2023

03:07

x64

Penimc.dll

3.0.6920.8954

88,968

16-May-2023

03:07

x64

Presentationframework.dll

3.0.6920.8954

4,648,960

16-May-2023

03:07

x86

Presentationhostdll.dll

3.0.6920.8954

175,512

16-May-2023

03:07

x64

Reachframework.dll

3.0.6920.8954

536,576

16-May-2023

03:07

x86

Windowsbase.dll

3.0.6920.8954

1,118,208

16-May-2023

03:07

x86

Presentationframework.dll

3.0.6920.8954

5,292,032

16-May-2023

03:06

x86

Reachframework.dll

3.0.6920.8954

536,576

16-May-2023

03:06

x86

System.dll

2.0.50727.8970

3,211,264

13-May-2023

01:41

x86

Windowsbase.dll

3.0.6920.8954

1,257,472

16-May-2023

03:06

x86

Big5.nlp

Not applicable

66,728

13-Apr-2023

01:05

Not applicable

Bopomofo.nlp

Not applicable

82,172

13-Apr-2023

01:05

Not applicable

Ksc.nlp

Not applicable

116,756

13-Apr-2023

01:05

Not applicable

Mscorlib.dll

2.0.50727.8970

4,628,480

13-May-2023

01:41

x86

Normidna.nlp

Not applicable

59,342

13-Apr-2023

01:05

Not applicable

Normnfc.nlp

Not applicable

45,794

13-Apr-2023

01:05

Not applicable

Normnfd.nlp

Not applicable

39,284

13-Apr-2023

01:05

Not applicable

Normnfkc.nlp

Not applicable

66,384

13-Apr-2023

01:05

Not applicable

Normnfkd.nlp

Not applicable

60,294

13-Apr-2023

01:05

Not applicable

Prc.nlp

Not applicable

83,748

13-Apr-2023

01:05

Not applicable

Prcp.nlp

Not applicable

83,748

13-Apr-2023

01:05

Not applicable

Sortkey.nlp

Not applicable

262,148

13-Apr-2023

01:05

Not applicable

Sorttbls.nlp

Not applicable

20,320

13-Apr-2023

01:05

Not applicable

Xjis.nlp

Not applicable

28,288

13-Apr-2023

01:05

Not applicable

Mscordacwks.dll

2.0.50727.8970

993,728

13-May-2023

01:41

x86

Mscorwks.dll

2.0.50727.8970

6,414,264

13-May-2023

01:41

x86

Sos.dll

2.0.50727.8970

393,152

13-May-2023

01:41

x86

Presentationcore.dll

3.0.6920.8954

4,222,976

16-May-2023

03:06

x86

Presentationfontcache.exe.config

Not applicable

161

01-Apr-2023

01:06

Not applicable

Wpfgfx_v0300.dll

3.0.6920.8954

1,741,192

16-May-2023

03:06

x86

System.data.dll

2.0.50727.8970

2,983,936

13-May-2023

01:41

x86

System.printing.dll

3.0.6920.8954

372,736

16-May-2023

03:06

x86

Penimc.dll

3.0.6920.8954

72,128

16-May-2023

03:06

x86

Presentationframework.dll

3.0.6920.8954

5,292,032

16-May-2023

03:06

x86

Presentationhostdll.dll

3.0.6920.8954

134,552

16-May-2023

03:06

x86

Reachframework.dll

3.0.6920.8954

536,576

16-May-2023

03:06

x86

Windowsbase.dll

3.0.6920.8954

1,257,472

16-May-2023

03:06

x86

How to obtain help and support for this update

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