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:

4340557 Security and Quality Rollup updates 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 4340557)

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.UnauthorizedAccessException

Message: 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 Framework

To resolve this issue, install the August Security and Quality Rollup KB 4345591.

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. Click Start, click Administrative Tools, and then click Microsoft Windows Server Update Services 3.0.

  2. Expand ComputerName, and then click Action.

  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. Type 4340557 in the Search box, and then click Search.

  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 the Programs 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 updates KB 4099634 and KB 4291495.

File information

File hash

Package name

Package hash SHA 1

Package hash SHA 2

Windows8-RT-KB4338421-x64.msu

3393E14C41012F5AA2799452A47D57E8C86109DA

BC58354EA2096B4379252B18256813D77D4C4EA9FD21CBCB062C3EDF16FEE1C4

Windows8-RT-KB4338421-x86.msu

7EFF8DCF6EA3A2A19CE06073AC7D5018BE64DDF4

88232DA52DB26F744913B4D8B5EE3EC1CBB1ED0EFA556DA1FB21DAB5739ECA0D


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

aspnet_wp.exe

2.0.50727.8762

43,160

07-Apr-2017

13:09

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

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

2.0.50727.8770

3,203,072

17-Aug-2017

13:09

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

3.0.4506.8800

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

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

3.0.4203.8800

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

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

3.0.4506.8800

110,592

11-Jun-2018

13:06

smsvchost.exe

3.0.4506.8800

129,664

11-Jun-2018

13:06

system.data.sqlxml.dll

2.0.50727.8773

745,472

01-Dec-2017

13:05

system.identitymodel.dll

3.0.4506.8800

446,464

11-Jun-2018

13:06

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

3.0.4506.8800

970,752

11-Jun-2018

13:06

system.runtime.serialization.dll

3.0.4506.8800

970,752

11-Jun-2018

13:06

system.security.dll

2.0.50727.8784

274,432

27-Mar-2018

17:37

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.web.regularexpressions.dll

2.0.50727.8762

98,304

07-Apr-2017

13:09

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

system.xml.dll

2.0.50727.8773

2,056,192

01-Dec-2017

13:05

system.dll

2.0.50727.8770

3,203,072

17-Aug-2017

13:09

windowsbase.dll

3.0.6920.8773

1,257,472

29-Mar-2017

13:09

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

aspnet_wp.exe

2.0.50727.8762

31,384

07-Apr-2017

13:09

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

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

3.0.4506.8800

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

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

3.0.4203.8800

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

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

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

3.0.4506.8800

110,592

11-Jun-2018

13:06

smsvchost.exe

3.0.4506.8800

129,664

11-Jun-2018

13:06

system.data.sqlxml.dll

2.0.50727.8773

745,472

01-Dec-2017

13:05

system.identitymodel.dll

3.0.4506.8800

446,464

11-Jun-2018

13:06

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

3.0.4506.8800

970,752

11-Jun-2018

13:06

system.runtime.serialization.dll

3.0.4506.8800

970,752

11-Jun-2018

13:06

system.security.dll

2.0.50727.8784

274,432

27-Mar-2018

17:37

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.web.regularexpressions.dll

2.0.50727.8762

98,304

07-Apr-2017

13:09

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

system.xml.dll

2.0.50727.8773

2,056,192

01-Dec-2017

13:05

system.dll

2.0.50727.8770

3,203,072

17-Aug-2017

13:09

windowsbase.dll

3.0.6920.8773

1,257,472

29-Mar-2017

13:09

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

aspnet_wp.exe

2.0.50727.8762

31,384

07-Apr-2017

13:09

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

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

3.0.4506.8800

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

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

3.0.4203.8800

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

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