Description of the Security Only update for .NET Framework 3.5 for Windows Server 2012 (KB 4338610)

This article also applies to the following:

• Microsoft .NET Framework 3.5

Summary

This security update resolves the following vulnerabilities:

• A “remote code execution” vulnerability exists when .NET Framework does not validate input correctly. An attacker who successfully exploits this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts that have full user rights. Users whose accounts are configured to have fewer user rights on the system could be less affected than users who have administrative user rights. To exploit the vulnerability, an attacker would have to pass specific input to an application through 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-2018-8284.

• An “elevation of privilege” vulnerability exists in .NET Framework that could allow an attacker to elevate their user rights level. To exploit the vulnerability, an attacker would first have to access the local computer, and then run a malicious program. This update addresses the vulnerability by correcting how .NET Framework enables COM objects. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8202.

• A “security feature bypass” vulnerability exists when .NET Framework components do not correctly validate certificates. An attacker could present expired certificates when challenged. This security update addresses the vulnerability by making sure that .NET Framework components correctly validate certificates. To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8356.
  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 security update

For more information about this security update as it relates to Windows Server 2012, see the following article in the Microsoft Knowledge Base:[4340005](<https://support.microsoft.com/help/ 4340005>) Security Only update for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 for Windows Server 2012 (KB 4340005)

Known issues

After you install any of the July 2018 .NET Framework Security Updates, a COM component fails to load because of “access denied,” “class not registered,” or “internal failure occurred for unknown reasons” errors. The most common failure signature is the following:Exception type: System.UnauthorizedAccessExceptionMessage: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))For more information about this issue, see the following article in the Microsoft Knowledge Base: 4345913 “Access Denied” errors and applications with COM activation fail after installing July 2018 Security and Quality Rollup updates for .NET FrameworkTo resolve this issue, install the August Security Only update KB 4345680.

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 ActiveX control is installed, you see the Microsoft Update Catalog screen. Type4340005in 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 require, 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, see the following article in the Microsoft Knowledge Base:20180710 Security update deployment information: July 10, 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

File hash

Package name	Package hash SHA 1	Package hash SHA 2
Windows8-RT-KB4338610-x64.msu	45B504495FF7F7D6C10C36F42122B98E9B1A1813	2CE3448E7308A71A6E2D9E91B8E38C3605DB5AD31671A8E8AB871AA825F7CCB0
Windows8-RT-KB4338610-x86.msu	5FF531CB81653F58DEB5AF56CDDC34C14ADBF983	AB841B63CB9172A6476433E4601E34F3BA8F3882C37D0E1AA85C15EF98C9BB47

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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 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.File name	File version	File size	Date	Time
big5.nlp		66,728	04-May-2018	19:43
bopomofo.nlp		82,172	04-May-2018	19:43
ksc.nlp		116,756	04-May-2018	19:43
mscorlib.dll	2.0.50727.8789	4,571,136	11-Jun-2018	13:06
normidna.nlp		59,342	04-May-2018	19:43
normnfc.nlp		45,794	04-May-2018	19:43
normnfd.nlp		39,284	04-May-2018	19:43
normnfkc.nlp		66,384	04-May-2018	19:43
normnfkd.nlp		60,294	04-May-2018	19:43
prc.nlp		83,748	04-May-2018	19:43
prcp.nlp		83,748	04-May-2018	19:43
sortkey.nlp		262,148	04-May-2018	19:43
sorttbls.nlp		20,320	04-May-2018	19:43
xjis.nlp		28,288	04-May-2018	19:43
mscordacwks.dll	2.0.50727.8789	1,757,344	11-Jun-2018	13:06
mscorwks.dll	2.0.50727.8789	10,009,752	11-Jun-2018	13:06
sos.dll	2.0.50727.8789	486,032	11-Jun-2018	13:06
servicemonikersupport.dll	3.0.4506.8800	20,144	11-Jun-2018	13:06
smdiagnostics.dll	3.0.4506.8800	94,208	11-Jun-2018	13:06
smsvchost.exe	3.0.4506.8800	117,376	11-Jun-2018	13:06
system.identitymodel.dll	3.0.4506.8800	405,504	11-Jun-2018	13:06
system.runtime.serialization.dll	3.0.4506.8800	847,872	11-Jun-2018	13:06
system.runtime.serialization.dll	3.0.4506.8800	847,872	11-Jun-2018	13:06
system.servicemodel.dll	3.0.4506.8800	5,332,992	11-Jun-2018	13:06
system.servicemodel.washosting.dll	3.0.4506.8800	32,768	11-Jun-2018	13:06
system.servicemodel.dll	3.0.4506.8800	5,332,992	11-Jun-2018	13:06
system.workflow.activities.dll	3.0.4203.8800	1,060,864	11-Jun-2018	13:06
system.workflow.componentmodel.dll	3.0.4203.8800	1,519,616	11-Jun-2018	13:06
system.workflow.runtime.dll	3.0.4203.8800	454,656	11-Jun-2018	13:06
smdiagnostics.dll	3.0.4506.8800	110,592	11-Jun-2018	13:06
smsvchost.exe	3.0.4506.8800	129,664	11-Jun-2018	13:06
system.identitymodel.dll	3.0.4506.8800	446,464	11-Jun-2018	13:06
system.runtime.serialization.dll	3.0.4506.8800	970,752	11-Jun-2018	13:06
system.runtime.serialization.dll	3.0.4506.8800	970,752	11-Jun-2018	13:06
system.servicemodel.dll	3.0.4506.8800	5,992,448	11-Jun-2018	13:06
system.servicemodel.washosting.dll	3.0.4506.8800	32,768	11-Jun-2018	13:06
system.servicemodel.dll	3.0.4506.8800	5,992,448	11-Jun-2018	13:06
system.workflow.activities.dll	3.0.4203.8800	1,142,784	11-Jun-2018	13:06
system.workflow.componentmodel.dll	3.0.4203.8800	1,630,208	11-Jun-2018	13:06
system.workflow.runtime.dll	3.0.4203.8800	540,672	11-Jun-2018	13:06
big5.nlp		66,728	15-Nov-2017	00:49
bopomofo.nlp		82,172	15-Nov-2017	00:49
ksc.nlp		116,756	15-Nov-2017	00:49
mscorlib.dll	2.0.50727.8789	4,554,752	11-Jun-2018	13:06
normidna.nlp		59,342	15-Nov-2017	00:49
normnfc.nlp		45,794	15-Nov-2017	00:49
normnfd.nlp		39,284	15-Nov-2017	00:49
normnfkc.nlp		66,384	15-Nov-2017	00:49
normnfkd.nlp		60,294	15-Nov-2017	00:49
prc.nlp		83,748	15-Nov-2017	00:49
prcp.nlp		83,748	15-Nov-2017	00:49
sortkey.nlp		262,148	15-Nov-2017	00:49
sorttbls.nlp		20,320	15-Nov-2017	00:49
xjis.nlp		28,288	15-Nov-2017	00:49
mscordacwks.dll	2.0.50727.8789	990,368	11-Jun-2018	13:06
mscorwks.dll	2.0.50727.8789	5,948,056	11-Jun-2018	13:06
sos.dll	2.0.50727.8789	389,776	11-Jun-2018	13:06
servicemonikersupport.dll	3.0.4506.8800	18,096	11-Jun-2018	13:06
system.identitymodel.dll	3.0.4506.8800	446,464	11-Jun-2018	13:06
system.runtime.serialization.dll	3.0.4506.8800	970,752	11-Jun-2018	13:06
system.servicemodel.dll	3.0.4506.8800	5,992,448	11-Jun-2018	13:06
system.workflow.activities.dll	3.0.4203.8800	1,142,784	11-Jun-2018	13:06
system.workflow.componentmodel.dll	3.0.4203.8800	1,630,208	11-Jun-2018	13:06
system.workflow.runtime.dll	3.0.4203.8800	540,672	11-Jun-2018	13:06

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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 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.File name	File version	File size	Date	Time
smdiagnostics.dll	3.0.4506.8800	110,592	11-Jun-2018	13:06
smsvchost.exe	3.0.4506.8800	129,664	11-Jun-2018	13:06
system.identitymodel.dll	3.0.4506.8800	446,464	11-Jun-2018	13:06
system.runtime.serialization.dll	3.0.4506.8800	970,752	11-Jun-2018	13:06
system.runtime.serialization.dll	3.0.4506.8800	970,752	11-Jun-2018	13:06
system.servicemodel.dll	3.0.4506.8800	5,992,448	11-Jun-2018	13:06
system.servicemodel.washosting.dll	3.0.4506.8800	32,768	11-Jun-2018	13:06
system.servicemodel.dll	3.0.4506.8800	5,992,448	11-Jun-2018	13:06
system.workflow.activities.dll	3.0.4203.8800	1,142,784	11-Jun-2018	13:06
system.workflow.componentmodel.dll	3.0.4203.8800	1,630,208	11-Jun-2018	13:06
system.workflow.runtime.dll	3.0.4203.8800	540,672	11-Jun-2018	13:06
big5.nlp		66,728	15-Nov-2017	00:49
bopomofo.nlp		82,172	15-Nov-2017	00:49
ksc.nlp		116,756	15-Nov-2017	00:49
mscorlib.dll	2.0.50727.8789	4,554,752	11-Jun-2018	13:06
normidna.nlp		59,342	15-Nov-2017	00:49
normnfc.nlp		45,794	15-Nov-2017	00:49
normnfd.nlp		39,284	15-Nov-2017	00:49
normnfkc.nlp		66,384	15-Nov-2017	00:49
normnfkd.nlp		60,294	15-Nov-2017	00:49
prc.nlp		83,748	15-Nov-2017	00:49
prcp.nlp		83,748	15-Nov-2017	00:49
sortkey.nlp		262,148	15-Nov-2017	00:49
sorttbls.nlp		20,320	15-Nov-2017	00:49
xjis.nlp		28,288	15-Nov-2017	00:49
mscordacwks.dll	2.0.50727.8789	990,368	11-Jun-2018	13:06
mscorwks.dll	2.0.50727.8789	5,948,056	11-Jun-2018	13:06
sos.dll	2.0.50727.8789	389,776	11-Jun-2018	13:06
servicemonikersupport.dll	3.0.4506.8800	18,096	11-Jun-2018	13:06
system.identitymodel.dll	3.0.4506.8800	446,464	11-Jun-2018	13:06
system.runtime.serialization.dll	3.0.4506.8800	970,752	11-Jun-2018	13:06
system.servicemodel.dll	3.0.4506.8800	5,992,448	11-Jun-2018	13:06
system.workflow.activities.dll	3.0.4203.8800	1,142,784	11-Jun-2018	13:06
system.workflow.componentmodel.dll	3.0.4203.8800	1,630,208	11-Jun-2018	13:06
system.workflow.runtime.dll	3.0.4203.8800	540,672	11-Jun-2018	13:06

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