Description of the Security Only update for .NET Framework 3.5 SP1 for Windows 8.1 and Server 2012 R2 (KB 4095515)

Summary

This update resolves a vulnerability in Microsoft .NET Framework that could cause denial of service when .NET Framework and .NET core components process XML documents incorrectly. An attacker who has successfully exploited this vulnerability could cause a denial of service against a .NET Framework application. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-0765.Additionally, this update resolves a security feature bypass vulnerability in Windows that could allow an attacker to bypass Device Guard. An attacker who successfully exploits this vulnerability could circumvent a User Mode Code Integrity (UMCI) policy on the computer. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-1039. Important

• All updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive updates in the future.
• 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 security update

For more information about this security update as it relates to Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2, see the following article in the Microsoft Knowledge Base:4099639 Security Only update for .NET Framework 3.5 SP1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 updates for Windows 8.1, RT 8.1 and Server 2012 R2 (KB 4099639)

How to obtain and install the update

Method 1: Microsoft Update Catalog

To get the stand-alone 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. Click Start, clickAdministrative Tools, and then clickMicrosoft Windows Server Update Services 3.0.
2. Expand ComputerName, and then clickAction.
3. Click 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 control is installed, you see the Microsoft Update Catalog screen. Enter4099639into theSearchbox, and then clickSearch.
6. Locate the .NET Framework packages that match the operating systems, languages, and processors in your environment. Click Add to add them to your basket.
7. After you select all the packages that you need, click View Basket.
8. To import the packages to your WSUS server, click Import.
9. After the packages are imported, click 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:20180508 Security update deployment information: May 8, 2018

Update removal information

Note We do not recommend that you remove any security update. To remove this update, use thePrograms 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 does not replace any previously released update.
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.

Windows 8.1 and Windows Server 2012 R2 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
Windows8.1-KB4095515-x64.msu	FEB4B15CCA90A91BD49B6E96EAA41BEC2F4CDCED	9F14B39EC71CACEC6D366AF7822631718C6C72940A8D56F5416FE9E3080D16E8
Windows8.1-KB4095515-x86.msu	FD16DD31D259B9EDA8ECA677D10CAC08C1E0F1E8	14EC2AA901A25A4F498C483B0FAB9F7C46A40DCC8ECBBDD18D1924165B8F63E1

For all supported x64-based versions

File name	File version	File size	Date	Time
big5.nlp		66,728	08-Nov-2017	15:14
bopomofo.nlp		82,172	08-Nov-2017	15:14
ksc.nlp		116,756	08-Nov-2017	15:14
mscorlib.dll	2.0.50727.8784	4,571,136	28-Mar-2018	13:15
normidna.nlp		59,342	08-Nov-2017	15:14
normnfc.nlp		45,794	08-Nov-2017	15:14
normnfd.nlp		39,284	08-Nov-2017	15:14
normnfkc.nlp		66,384	08-Nov-2017	15:14
normnfkd.nlp		60,294	08-Nov-2017	15:14
prc.nlp		83,748	08-Nov-2017	15:14
prcp.nlp		83,748	08-Nov-2017	15:14
sortkey.nlp		262,148	08-Nov-2017	15:14
sorttbls.nlp		20,320	08-Nov-2017	15:14
xjis.nlp		28,288	08-Nov-2017	15:14
mscordacwks.dll	2.0.50727.8784	1,757,336	28-Mar-2018	13:15
mscorwks.dll	2.0.50727.8784	10,006,680	28-Mar-2018	13:15
sos.dll	2.0.50727.8784	486,024	28-Mar-2018	13:15
system.security.dll	2.0.50727.8784	274,432	28-Mar-2018	13:15
system.security.dll	2.0.50727.8784	274,432	28-Mar-2018	13:15
big5.nlp		66,728	27-Oct-2017	23:27
bopomofo.nlp		82,172	27-Oct-2017	23:27
ksc.nlp		116,756	27-Oct-2017	23:27
mscorlib.dll	2.0.50727.8784	4,554,752	28-Mar-2018	13:15
normidna.nlp		59,342	27-Oct-2017	23:27
normnfc.nlp		45,794	27-Oct-2017	23:27
normnfd.nlp		39,284	27-Oct-2017	23:27
normnfkc.nlp		66,384	27-Oct-2017	23:27
normnfkd.nlp		60,294	27-Oct-2017	23:27
prc.nlp		83,748	27-Oct-2017	23:27
prcp.nlp		83,748	27-Oct-2017	23:27
sortkey.nlp		262,148	27-Oct-2017	23:27
sorttbls.nlp		20,320	27-Oct-2017	23:27
xjis.nlp		28,288	27-Oct-2017	23:27
mscordacwks.dll	2.0.50727.8784	990,360	28-Mar-2018	13:15
mscorwks.dll	2.0.50727.8784	5,946,520	28-Mar-2018	13:15
sos.dll	2.0.50727.8784	389,768	28-Mar-2018	13:15

For all supported x86-based versions

File name	File version	File size	Date	Time
system.security.dll	2.0.50727.8784	274,432	28-Mar-2018	13:15
big5.nlp		66,728	27-Oct-2017	23:27
bopomofo.nlp		82,172	27-Oct-2017	23:27
ksc.nlp		116,756	27-Oct-2017	23:27
mscorlib.dll	2.0.50727.8784	4,554,752	28-Mar-2018	13:15
normidna.nlp		59,342	27-Oct-2017	23:27
normnfc.nlp		45,794	27-Oct-2017	23:27
normnfd.nlp		39,284	27-Oct-2017	23:27
normnfkc.nlp		66,384	27-Oct-2017	23:27
normnfkd.nlp		60,294	27-Oct-2017	23:27
prc.nlp		83,748	27-Oct-2017	23:27
prcp.nlp		83,748	27-Oct-2017	23:27
sortkey.nlp		262,148	27-Oct-2017	23:27
sorttbls.nlp		20,320	27-Oct-2017	23:27
xjis.nlp		28,288	27-Oct-2017	23:27
mscordacwks.dll	2.0.50727.8784	990,360	28-Mar-2018	13:15
mscorwks.dll	2.0.50727.8784	5,946,520	28-Mar-2018	13:15
sos.dll	2.0.50727.8784	389,768	28-Mar-2018	13:15

How to obtain help and support for this security update

• Help for installing updates: Windows Update FAQ
• Security solutions for IT professionals: TechNet Security Support and Troubleshooting
• Help for protecting your Windows-based products and services from viruses and malware: Microsoft Secure
• Local support according to your country: International Support