Description of the Security and Quality Rollup for .NET Framework 3.5 SP1 for Windows Server 2008 SP2 (KB 4471102)

**Applies to:**Microsoft .NET Framework 3.5 Service Pack 1

Summary

This security update resolves a vulnerability in Microsoft .NET Framework that could allow remote code execution when Microsoft .NET Framework doesn’t validate input correctly. An attacker who successfully exploits this vulnerability could take control of an affected system. The attacker could then install programs; view, change, or delete data; or create new accounts that use full user rights. Users whose accounts are configured to have fewer user rights on the system could be less affected than users who are granted administrative user rights.To exploit the vulnerability, an attacker has to pass specific input to an application that uses 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-2018-8540.ImportantIf 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 Server 2008 Service Pack 2 (SP2), see the following article in the Microsoft Knowledge Base:4471990 Security and Quality Rollup updates for .NET Framework 3.5 SP1, 4.5.2, and 4.6 for Windows Server 2008 SP2 (KB 4471990)

How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Windows Software Update Services (WSUS)

On your WSUS server, follow these steps:

1. Select Start, selectAdministrative Tools, and then selectMicrosoft Windows Server Update Services 3.0.
2. Expand ComputerName, and then selectAction.
3. Select Import Updates.
4. WSUS opens a browser window in which you may be prompted to install an ActiveX control. Install the ActiveX control to continue.
5. After the ActiveX control is installed, you see the Microsoft Update Catalog screen. Type4471990in theSearchbox, and then selectSearch.
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 need, 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:20181211 Security update deployment information: December 11, 2018

Update removal information

Note We don’t recommend that you remove any security update. To remove this update, use thePrograms and Features item in Control Panel.

Update restart information

This update doesn’t 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 4457921, 4467243, and 4467227.

File information

File hash

File name	SHA1 hash	SHA256 hash
NDP35SP1-KB4471102-ia64.exe	4F2612B058747C8E074157DF01751C59B90446B5	4E22EFEB2B97851BE78EB5AA3F8177F6179D184ACDDD1BFC0A702B10CC743762
NDP35SP1-KB4471102-x64.exe	0A2E2B076B6EE176602B3B3DCF664DBDDA5C1B1E	86D7EDD8AE7658235171EB5435703C00D53E1C6159634EDD4D3D9C4A63C2F7B1
NDP35SP1-KB4471102-x86.exe	4A39C18C807AFB7064426C358C8936A4EB1B4ED0	3470BC16237087F527DAF1A57D6628087C707DFCC25CB6E532044B0FA2C981E9

File attributes for all supported x86-based systems

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.File name	File version	File size	Date	Time
System.Web.Extensions.dll	3.5.30729.8816	1,282,048	06-Nov-2018	11:23

File attributes for all supported x64-based systems

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.File name	File version	File size	Date	Time
System.Web.Extensions.dll	3.5.30729.8816	1,282,048	06-Nov-2018	12:04
System.Web.Extensions.dll	3.5.30729.8816	1,282,048	06-Nov-2018	11:23

File attributes for all supported IA64-based systems

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.File name	File version	File size	Date	Time
System.Web.Extensions.dll	3.5.30729.8816	1,282,048	06-Nov-2018	12:18
System.Web.Extensions.dll	3.5.30729.8816	1,282,048	06-Nov-2018	11:23

How to obtain help and support for this security update

• Help for installing updates: Windows Update FAQ
• Protect yourself online and at home: Windows Security support
• Local support according to your country: International Support