Description of the Security and Quality Rollup for .NET Framework 3.5 for Windows Server 2012 (KB 4457042)

This also applies to:

• Microsoft .NET Framework 3.5

Summary

This security update resolves a vulnerability in Microsoft .NET Framework that could allow remote code execution when .NET Framework processes untrusted input. An attacker who successfully exploits this vulnerability in software by using .NET Framework could take control of an affected system. The 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 operate with administrative user rights.To exploit the vulnerability, an attacker would first have to convince the user to open a malicious document or application.This security update addresses the vulnerability by correcting how .NET Framework validates untrusted input.To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8421.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:4457919 Security and Quality Rollup updates for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, and 4.7.2 for Windows Server 2012 (KB 4457919)

Known issues

After the September 2018 .NET Framework security update is applied to resolve CVE-2018-8421 (.NET Framework remote code execution vulnerability), SharePoint out-of-the-box workflows stop working.For more information about this known issue, see the following article in the Microsoft Knowledge Base:4465015 SharePoint Workflows stop working after you install .NET security updates for CVE-2018-8421

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. Type4457915in 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:20180911 Security update deployment information: September 11, 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 replaces previously released updates KB4345591 and KB 4346081.

File information

File hash

File name	SHA1 hash	SHA256 hash
Windows8-RT-KB4457042-x64.msu	3624D9B9B32E2D39359F297777344D98D8A3DA39	A73358BBBCF7D37187B9D9C3FB2814C4276E6DFD42D105153F41371EACC9038A

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
big5.nlp		66,728	21-Nov-2017	07:23
bopomofo.nlp		82,172	21-Nov-2017	07:23
ksc.nlp		116,756	21-Nov-2017	07:23
mscorlib.dll	2.0.50727.8793	4,571,136	24-Jul-2018	15:10
normidna.nlp		59,342	21-Nov-2017	07:23
normnfc.nlp		45,794	21-Nov-2017	07:23
normnfd.nlp		39,284	21-Nov-2017	07:23
normnfkc.nlp		66,384	21-Nov-2017	07:23
normnfkd.nlp		60,294	21-Nov-2017	07:23
prc.nlp		83,748	21-Nov-2017	07:23
prcp.nlp		83,748	21-Nov-2017	07:23
sortkey.nlp		262,148	21-Nov-2017	07:23
sorttbls.nlp		20,320	21-Nov-2017	07:23
xjis.nlp		28,288	21-Nov-2017	07:23
aspnet_wp.exe	2.0.50727.8762	43,160	07-Apr-2017	13:09
mscordacwks.dll	2.0.50727.8793	1,758,784	24-Jul-2018	15:10
mscorsvc.dll	2.0.50727.8793	495,232	24-Jul-2018	15:10
mscorwks.dll	2.0.50727.8793	10,008,632	24-Jul-2018	15:10
sos.dll	2.0.50727.8793	486,008	24-Jul-2018	15:10
system.data.sqlxml.dll	2.0.50727.8773	745,472	01-Dec-2017	13:13
system.management.dll	2.0.50727.8766	389,120	12-Jul-2017	13:09
system.runtime.remoting.dll	2.0.50727.8771	307,200	31-Aug-2017	13:09
system.security.dll	2.0.50727.8784	274,432	27-Mar-2018	17:37
system.web.regularexpressions.dll	2.0.50727.8762	98,304	07-Apr-2017	13:09
system.xml.dll	2.0.50727.8773	2,056,192	01-Dec-2017	13:13
system.dll	2.0.50727.8791	3,207,168	12-Jul-2018	00:30
webengine.dll	2.0.50727.8762	746,648	07-Apr-2017	13:09
wminet_utils.dll	2.0.50727.8766	140,960	12-Jul-2017	13:09
presentationcore.dll	3.0.6920.8773	4,006,400	29-Mar-2017	13:09
presentationfontcache.exe.config		161	06-Jul-2012	20:06
wpfgfx_v0300.dll	3.0.6920.8773	2,256,032	29-Mar-2017	13:09
system.data.dll	2.0.50727.8762	3,150,336	06-Apr-2017	20:26
system.printing.dll	3.0.6920.8773	358,400	29-Mar-2017	13:09
system.web.dll	2.0.50727.8762	5,296,128	07-Apr-2017	13:09
servicemonikersupport.dll	3.0.4506.8803	20,144	17-Jul-2018	18:37
smdiagnostics.dll	3.0.4506.8803	94,208	17-Jul-2018	18:37
smsvchost.exe	3.0.4506.8803	117,376	17-Jul-2018	18:37
system.identitymodel.dll	3.0.4506.8803	405,504	17-Jul-2018	18:37
system.runtime.serialization.dll	3.0.4506.8803	847,872	17-Jul-2018	18:37
system.runtime.serialization.dll	3.0.4506.8803	847,872	17-Jul-2018	18:37
system.servicemodel.dll	3.0.4506.8803	5,337,088	17-Jul-2018	18:37
system.servicemodel.washosting.dll	3.0.4506.8803	32,768	17-Jul-2018	18:37
system.servicemodel.dll	3.0.4506.8803	5,337,088	17-Jul-2018	18:37
penimc.dll	3.0.6920.8773	85,648	29-Mar-2017	13:09
presentationframework.dll	3.0.6920.8773	4,640,768	29-Mar-2017	13:09
presentationhostdll.dll	3.0.6920.8773	172,208	29-Mar-2017	13:09
reachframework.dll	3.0.6920.8773	532,480	29-Mar-2017	13:09
windowsbase.dll	3.0.6920.8773	1,118,208	29-Mar-2017	13:09
system.workflow.activities.dll	3.0.4203.8811	1,060,864	10-Aug-2018	00:00
system.workflow.componentmodel.dll	3.0.4203.8811	1,519,616	10-Aug-2018	00:00
system.workflow.runtime.dll	3.0.4203.8811	454,656	10-Aug-2018	00:00
presentationframework.dll	3.0.6920.8773	5,283,840	29-Mar-2017	13:09
reachframework.dll	3.0.6920.8773	532,480	29-Mar-2017	13:09
smdiagnostics.dll	3.0.4506.8803	110,592	17-Jul-2018	18:37
smsvchost.exe	3.0.4506.8803	129,664	17-Jul-2018	18:37
system.data.sqlxml.dll	2.0.50727.8773	745,472	01-Dec-2017	13:05
system.identitymodel.dll	3.0.4506.8803	446,464	17-Jul-2018	18:37
system.management.dll	2.0.50727.8766	389,120	12-Jul-2017	13:09
system.runtime.remoting.dll	2.0.50727.8771	307,200	31-Aug-2017	13:08
system.runtime.serialization.dll	3.0.4506.8803	970,752	17-Jul-2018	18:37
system.runtime.serialization.dll	3.0.4506.8803	970,752	17-Jul-2018	18:37
system.security.dll	2.0.50727.8784	274,432	27-Mar-2018	17:37
system.servicemodel.dll	3.0.4506.8803	5,996,544	17-Jul-2018	18:37
system.servicemodel.washosting.dll	3.0.4506.8803	32,768	17-Jul-2018	18:37
system.servicemodel.dll	3.0.4506.8803	5,996,544	17-Jul-2018	18:37
system.web.regularexpressions.dll	2.0.50727.8762	98,304	07-Apr-2017	13:09
system.workflow.activities.dll	3.0.4203.8811	1,142,784	09-Aug-2018	23:59
system.workflow.componentmodel.dll	3.0.4203.8811	1,630,208	09-Aug-2018	23:59
system.workflow.runtime.dll	3.0.4203.8811	540,672	09-Aug-2018	23:59
system.xml.dll	2.0.50727.8773	2,056,192	01-Dec-2017	13:05
system.dll	2.0.50727.8791	3,207,168	12-Jul-2018	00:30
windowsbase.dll	3.0.6920.8773	1,257,472	29-Mar-2017	13:09
big5.nlp		66,728	21-Nov-2017	07:23
bopomofo.nlp		82,172	21-Nov-2017	07:23
ksc.nlp		116,756	21-Nov-2017	07:23
mscorlib.dll	2.0.50727.8793	4,554,752	24-Jul-2018	15:10
normidna.nlp		59,342	21-Nov-2017	07:23
normnfc.nlp		45,794	21-Nov-2017	07:23
normnfd.nlp		39,284	21-Nov-2017	07:23
normnfkc.nlp		66,384	21-Nov-2017	07:23
normnfkd.nlp		60,294	21-Nov-2017	07:23
prc.nlp		83,748	21-Nov-2017	07:23
prcp.nlp		83,748	21-Nov-2017	07:23
sortkey.nlp		262,148	21-Nov-2017	07:23
sorttbls.nlp		20,320	21-Nov-2017	07:23
xjis.nlp		28,288	21-Nov-2017	07:23
aspnet_wp.exe	2.0.50727.8762	31,384	07-Apr-2017	13:09
mscordacwks.dll	2.0.50727.8793	991,808	24-Jul-2018	15:10
mscorsvc.dll	2.0.50727.8793	231,992	24-Jul-2018	15:10
mscorwks.dll	2.0.50727.8793	5,948,472	24-Jul-2018	15:10
sos.dll	2.0.50727.8793	391,216	24-Jul-2018	15:10
webengine.dll	2.0.50727.8762	437,400	07-Apr-2017	13:09
wminet_utils.dll	2.0.50727.8766	116,896	12-Jul-2017	13:09
presentationcore.dll	3.0.6920.8773	4,222,976	29-Mar-2017	13:09
presentationfontcache.exe.config		161	06-Jul-2012	20:04
wpfgfx_v0300.dll	3.0.6920.8773	1,737,888	29-Mar-2017	13:09
system.data.dll	2.0.50727.8762	2,975,744	06-Apr-2017	20:26
system.printing.dll	3.0.6920.8773	372,736	29-Mar-2017	13:09
system.web.dll	2.0.50727.8762	5,287,936	07-Apr-2017	13:09
servicemonikersupport.dll	3.0.4506.8803	18,096	17-Jul-2018	18:37
system.identitymodel.dll	3.0.4506.8803	446,464	17-Jul-2018	18:37
system.runtime.serialization.dll	3.0.4506.8803	970,752	17-Jul-2018	18:37
system.servicemodel.dll	3.0.4506.8803	5,996,544	17-Jul-2018	18:37
penimc.dll	3.0.6920.8773	68,752	29-Mar-2017	13:09
presentationframework.dll	3.0.6920.8773	5,283,840	29-Mar-2017	13:09
presentationhostdll.dll	3.0.6920.8773	131,248	29-Mar-2017	13:09
reachframework.dll	3.0.6920.8773	532,480	29-Mar-2017	13:09
windowsbase.dll	3.0.6920.8773	1,257,472	29-Mar-2017	13:09
system.workflow.activities.dll	3.0.4203.8811	1,142,784	09-Aug-2018	23:59
system.workflow.componentmodel.dll	3.0.4203.8811	1,630,208	09-Aug-2018	23:59
system.workflow.runtime.dll	3.0.4203.8811	540,672	09-Aug-2018	23:59

How to obtain help and support for this security update

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