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mskbMicrosoftKB4344147
HistoryAug 14, 2018 - 7:00 a.m.

Description of the Security and Quality Rollup for .NET Framework 4.5.2 for Windows 8.1, RT 8.1, and Windows Server 2012 R2 (KB 4344147)

2018-08-1407:00:00
Microsoft
support.microsoft.com
9

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.027 Low

EPSS

Percentile

90.2%

Description of the Security and Quality Rollup for .NET Framework 4.5.2 for Windows 8.1, RT 8.1, and Windows Server 2012 R2 (KB 4344147)

Summary

This update resolves an information disclosure vulnerability in Microsoft .NET Framework that could allow an attacker to access information in multi-tenant environments. The vulnerability is caused when .NET Framework is used in high-load/high-density network connections in which content from one stream can blend into another stream.To exploit the vulnerability, an attacker who can access one tenant in a high-load/high-density environment could potentially trigger multi-tenanted data exposure from one customer to another.This security update addresses the vulnerability by correcting the way that .NET Framework handles high-load/high-density network connections.To learn more about this vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8360.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:4345592 Security and Quality Rollup updates for .NET Framework 3.5 SP1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, and 4.7.2 for Windows 8.1, RT 8.1 and Server 2012 R2 (KB 4345592)

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, 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. Type4345592in 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, go to the following article in the Microsoft Knowledge Base:20180814 Security update deployment information: August 14, 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 4340558 and 4291497.

File information

File hash

File name SHA1 hash SHA256 hash
Windows8.1-KB4344147-x64.msu 73CD95E3B2697458001FDA69AEBB8891DDCAC168 DE42CB0B14093C8C04F63298B7FFD395CE4A0A1B810A3D89D941285000FC9401
Windows8.1-KB4344147-x86.msu 67EBC9C75D9E080DD0A8D05B79D9B54256006DD2 5568FCFFBC84A67A3D7DB7A18A66C51C2A5D0BBF7DE38B3D66CC338AFEEE4885

File attributes

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.For all supported x86-based systemsFile name File version File size Date Time
system.dll 2.0.50727.8791 3,207,168 12-Jul-2018 00:30
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
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
For all supported x64-based systemsFile 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
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.dll 2.0.50727.8791 3,207,168 12-Jul-2018 00:30
system.dll 2.0.50727.8791 3,207,168 12-Jul-2018 00:30
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
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

How to obtain help and support for this security update

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.027 Low

EPSS

Percentile

90.2%