Microsoft security alert.

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Enterprise TruRisk Platform to protect organizations against 127 vulnerabilities that were fixed in 12 bulletins announced today by Microsoft. Customers can immediately audit their networks for these and other new vulnerabilities by accessing their Qualys subscription. Visit Qualys Security Blog to prioritize remediation.

Non-Qualys customers can audit their network for these and other vulnerabilities by signing up for a Qualys Free Trial, or by trying Qualys Community Edition.

Vulnerability details

Microsoft has released 12 security bulletins to fix newly discovered flaws in their software. Qualys has released the following checks for these new vulnerabilities:

• Microsoft Internet Explorer Security Update for September 2020

  Severity

  Critical 4

  Qualys ID

  100410

  Vendor Reference

  KB4570333, KB4571756, KB4574727, KB4577010, KB4577015, KB4577032, KB4577038, KB4577041, KB4577049, KB4577051, KB4577064, KB4577066

  CVE Reference

  CVE-2020-0878, CVE-2020-1012, CVE-2020-1506

  CVSS Scores

  Base 6.8 / Temporal 5.3

  Description

  Microsoft releases the security update for Internet Explorer September 2020

  The KB Articles associated with the update:
  KB4577038
  KB4577010
  KB4577015
  KB4577066
  KB4577041
  KB4570333
  KB4571756
  KB4577032
  KB4577064
  KB4574727
  KB4577049
  KB4577051
  

  QID Detection Logic (Authenticated):
  

  This QID checks for the file version of Mshtml.dll

  The following versions of Mshtml.dll with their corresponding KBs are verified:
  KB4577038 - 10.0.9200.22975 , 11.0.9600.19811
  KB4577010 - 9.0.8112.21488 , 11.0.9600.19811
  KB4577015 - 11.0.14393.3930
  KB4577066 - 11.0.9600.19811
  KB4577041 - 11.0.16299.2107
  KB4570333 - 11.0.17763.1457
  KB4571756 - 11.0.19041.508
  KB4577032 - 11.0.17134.1726
  KB4577064 - 9.0.8112.21488
  KB4574727 - 11.0.18362.1082
  KB4577049 - 11.0.10240.18666
  KB4577051 - 11.0.9600.19811
  

  Consequence

  An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, the attacker could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

  Solution

  Please refer to the Security Update Guide for more information pertaining to these vulnerabilities.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft Security Update Guide Windows

• Microsoft SharePoint Foundation and SharePoint Server Update September 2020

  Severity

  Critical 4

  Qualys ID

  110360

  Vendor Reference

  KB3101523, KB4484480, KB4484488, KB4484504, KB4484505, KB4484506, KB4484512, KB4484514, KB4484515, KB4484516, KB4484525, KB4484528, KB4486664, KB4486667

  CVE Reference

  CVE-2020-1198, CVE-2020-1200, CVE-2020-1205, CVE-2020-1210, CVE-2020-1218, CVE-2020-1224, CVE-2020-1227, CVE-2020-1335, CVE-2020-1338, CVE-2020-1345, CVE-2020-1440, CVE-2020-1452, CVE-2020-1453, CVE-2020-1460, CVE-2020-1482, CVE-2020-1514, CVE-2020-1523, CVE-2020-1575, CVE-2020-1576, CVE-2020-1595

  CVSS Scores

  Base 7.5 / Temporal 5.5

  Description

  Microsoft has released September 2020 security updates to fix multiple security vulnerabilities.

  This security update contains the following KBs:

  KB4484506
  KB4484505
  KB4486667
  KB4484525
  KB4484515
  KB4484488
  KB4484504
  KB4486664
  KB4484512
  KB4484480
  KB4484514
  KB4484528
  KB3101523
  KB4484516

  QID Detection Logic:
  This authenticated QID checks the file versions from above Microsoft KB article with the versions on affected SharePoint system.

  Consequence

  Successful exploitation allows an attacker to execute code remotely.

  Solution

  Refer to Microsoft Security Guidance for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft SharePoint Foundation and SharePoint Server September 2020

• Microsoft Office and Microsoft Office Services and Web Apps Security Update September 2020

  Severity

  Critical 4

  Qualys ID

  110361

  Vendor Reference

  KB4484466, KB4484469, KB4484481, KB4484503, KB4484507, KB4484510, KB4484513, KB4484517, KB4484518, KB4484522, KB4484526, KB4484530, KB4484532, KB4484533, KB4486660, KB4486661, KB4486665

  CVE Reference

  CVE-2020-1193, CVE-2020-1210, CVE-2020-1218, CVE-2020-1224, CVE-2020-1332, CVE-2020-1335, CVE-2020-1338, CVE-2020-1594, CVE-2020-16855

  CVSS Scores

  Base 6.8 / Temporal 5

  Description

  Microsoft has released September 2020 security updates to fix multiple security vulnerabilities.

  This security update contains the following KBs:
  KB4484466
  KB4484530
  KB4484469
  KB4484507
  KB4486665
  KB4484526
  KB3101523
  KB4484503
  KB4484510
  KB4484533
  KB4486661
  KB4484481
  KB4486660
  KB4484522
  KB4484518
  KB4484513
  KB4484532
  KB4484517

  QID Detection Logic:
  This authenticated QID checks the file versions from above Microsoft KB article with the versions on affected office system.

  Consequence

  Successful exploitation allows an attacker to execute code remotely.

  Solution

  Refer to Microsoft Security Guidance for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft Office and Microsoft Office Services and Web Apps Security Update September 2020

• Microsoft Exchange Server Security Update for September 2020

  Severity

  Critical 4

  Qualys ID

  50101

  Vendor Reference

  KB4577352

  CVE Reference

  CVE-2020-16875

  CVSS Scores

  Base 9 / Temporal 7.1

  Description

  A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory. Exploitation of the vulnerability requires that a specially crafted email be sent to a vulnerable Exchange server.

  The security update addresses the vulnerability by correcting how Microsoft Exchange handles objects in memory.

  Affected Software:
  Microsoft Exchange Server 2016 Cumulative Update 16
  Microsoft Exchange Server 2016 Cumulative Update 17
  Microsoft Exchange Server 2019 Cumulative Update 5
  Microsoft Exchange Server 2019 Cumulative Update 6

  KB articles covered: 4577352.

  QID Detection Logic (authenticated):
  The QID checks for the version of file Exsetup.exe if it is lesser than:
  The version for Microsoft Exchange Server 2016 Cumulative Update 16 is 15.1.1979.6
  The version for Microsoft Exchange Server 2016 Cumulative Update 17 is 15.1.2044.6
  The version for Microsoft Exchange Server 2019 Cumulative Update 5 is 15.2.595.6
  The version for Microsoft Exchange Server 2019 Cumulative Update 6 is 15.2.659.6

  Consequence

  Successful exploitation allows a remote attacker to run arbitrary code in the context of the System user. An attacker could then install programs; view, change, or delete data; or create new accounts.

  Solution

  Customers are advised to refer to CVE-2020-16875 for information pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Download Security Update For Exchange Server 2016 Cumulative Update 16 (KB4577352) Windows
  Download Security Update For Exchange Server 2016 Cumulative Update 17 (KB4577352) Windows
  Download Security Update For Exchange Server 2019 Cumulative Update 5 (KB4577352) Windows
  Download Security Update For Exchange Server 2019 Cumulative Update 6 (KB4577352) WIndows

• Microsoft Dynamics 365 Security Update for September 2020

  Severity

  Critical 4

  Qualys ID

  91672

  Vendor Reference

  CVE-2020-16857, CVE-2020-16858, CVE-2020-16859, CVE-2020-16860, CVE-2020-16861, CVE-2020-16862, CVE-2020-16864, CVE-2020-16871, CVE-2020-16872, CVE-2020-16878

  CVE Reference

  CVE-2020-16857, CVE-2020-16858, CVE-2020-16859, CVE-2020-16860, CVE-2020-16861, CVE-2020-16862, CVE-2020-16864, CVE-2020-16871, CVE-2020-16872, CVE-2020-16878

  CVSS Scores

  Base 6.5 / Temporal 4.8

  Description

  Multiple cross site scripting vulnerabilities exist when Microsoft Dynamics 365 (on-premises) does not properly sanitize a specially crafted web request to an affected Dynamics server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected Dynamics server.

  Multiple remote code execution vulnerability exists in Microsoft Dynamics 365 (on-premises) when the server fails to properly sanitize web requests to an affected Dynamics server.

  Affected Versions:
  Microsoft Dynamics 365 (on-premises) version 8.2
  Microsoft Dynamics 365 (on-premises) version 9.0

  KB Articles: KB4574742, KB4577501

  QID Detection Logic:
  This authenticated QID flags vulnerable systems by detecting Microsoft.Crm.Setup.Server.exe versions lesser than:
  Microsoft Dynamics 365 (on-premises) version 8.2: 8.2.22.14
  Microsoft Dynamics 365 (on-premises) version 9.0: 9.0.20.7

  Consequence

  Successful exploitation allows an attacker to execute remote code.

  Solution

  Customers are advised to refer to KB4577501, KB4574742 for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB4574742
  KB4577501

• Microsoft SQL Server Reporting Services Update for September 2020

  Severity

  Serious 3

  Qualys ID

  91673

  Vendor Reference

  CVE-2020-1044

  CVE Reference

  CVE-2020-1044

  CVSS Scores

  Base 4 / Temporal 3

  Description

  A security feature bypass vulnerability exists in SQL Server Reporting Services (SSRS) when the server improperly validates attachments uploaded to reports. To exploit the vulnerability, an authenticated attacker would need to send a specially crafted request to an affected SSRS server.

  The update addresses the vulnerability by modifying how SSRS validates attachment uploads.

  Affected Software:
  SQL Server 2017 Reporting Services
  SQL Server 2019 Reporting Services

  QID Detection Logic:
  This authenticated QID detects vulnerable file versions of the above mentioned software by fetching SSRS\ReportServer\bin\ReportingServicesService.exe file versions from the HKLM\SOFTWARE\Microsoft\Microsoft SQL Server\SSRS\Setup registry key
  SQL Server 2017 Reporting Services: lesser than 2017.140.600.1669.
  SQL Server 2019 Reporting Services: lesser than 2018.150.1102.861

  Consequence

  Successful exploitation allows an authenticated attacker to bypass security restrictions to upload file types that were disallowed by an administrator.

  Solution

  Customers are advised to refer to CVE-2020-1044 for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  SQL Server 2017 Reporting Services Windows
  SQL Server 2019 Reporting Services Windows

• Microsoft Windows Security Update for September 2020

  Severity

  Critical 4

  Qualys ID

  91674

  Vendor Reference

  KB4570333, KB4571756, KB4574727, KB4577015, KB4577032, KB4577038, KB4577041, KB4577048, KB4577049, KB4577051, KB4577053, KB4577064, KB4577066, KB4577070, KB4577071

  CVE Reference

  CVE-2020-0648, CVE-2020-0664, CVE-2020-0718, CVE-2020-0761, CVE-2020-0766, CVE-2020-0782, CVE-2020-0790, CVE-2020-0805, CVE-2020-0836, CVE-2020-0837, CVE-2020-0838, CVE-2020-0839, CVE-2020-0856, CVE-2020-0870, CVE-2020-0875, CVE-2020-0886, CVE-2020-0890, CVE-2020-0904, CVE-2020-0908, CVE-2020-0911, CVE-2020-0912, CVE-2020-0914, CVE-2020-0921, CVE-2020-0922, CVE-2020-0928, CVE-2020-0941, CVE-2020-0951, CVE-2020-0989, CVE-2020-0997, CVE-2020-0998, CVE-2020-1013, CVE-2020-1030, CVE-2020-1031, CVE-2020-1033, CVE-2020-1034, CVE-2020-1038, CVE-2020-1039, CVE-2020-1052, CVE-2020-1053, CVE-2020-1074, CVE-2020-1083, CVE-2020-1091, CVE-2020-1097, CVE-2020-1098, CVE-2020-1115, CVE-2020-1119, CVE-2020-1122, CVE-2020-1129, CVE-2020-1130, CVE-2020-1133, CVE-2020-1146, CVE-2020-1152, CVE-2020-1159, CVE-2020-1162, CVE-2020-1169, CVE-2020-1228, CVE-2020-1245, CVE-2020-1250, CVE-2020-1252, CVE-2020-1256, CVE-2020-1285, CVE-2020-1303, CVE-2020-1308, CVE-2020-1319, CVE-2020-1376, CVE-2020-1471, CVE-2020-1491, CVE-2020-1507, CVE-2020-1508, CVE-2020-1532, CVE-2020-1559, CVE-2020-1589, CVE-2020-1590, CVE-2020-1592, CVE-2020-1593, CVE-2020-1596, CVE-2020-1598, CVE-2020-16854, CVE-2020-16879

  CVSS Scores

  Base 9.3 / Temporal 7.7

  Description

  Microsoft releases the security update for Windows September 2020

  The KB Articles associated with the update:
  KB4577038
  KB4577015
  KB4577066
  KB4577071
  KB4577041
  KB4577070
  KB4570333
  KB4577032
  KB4577053
  KB4577064
  KB4574727
  KB4577049
  KB4577051
  KB4577048
  KB4571756
  

  QID Detection Logic (Authenticated):
  

  This QID checks for the file version of ntoskrnl.exe

  The following versions of ntoskrnl.exe with their corresponding KBs are verified:
  KB4577038 - 6.2.9200.23149
  KB4577015 - 10.0.14393.3930
  KB4577066 - 6.3.9600.19812
  KB4577071 - 6.3.9600.19812
  KB4577041 - 10.0.16299.2107
  KB4577070 - 6.0.6003.20933
  KB4570333 - 10.0.17763.1457
  KB4577032 - 10.0.17134.1726
  KB4577053 - 6.1.7601.24560
  KB4577064 - 6.0.6003.20933
  KB4574727 - 10.0.18362.1082
  KB4577049 - 10.0.10240.18696
  KB4577051 - 6.1.7601.24560
  KB4577048 - 6.2.9200.23149
  

  Consequence

  An attacker who successfully exploited this vulnerability could execute arbitrary code and take control of an affected system.

  Solution

  Please refer to the Security Update Guide for more information pertaining to these vulnerabilities.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft Security Update Guide Windows

• Microsoft Visual Studio Security Update for September 2020

  Severity

  Critical 4

  Qualys ID

  91675

  Vendor Reference

  CVE-2020-1130, CVE-2020-1133, CVE-2020-16856, CVE-2020-16874

  CVE Reference

  CVE-2020-1130, CVE-2020-1133, CVE-2020-16856, CVE-2020-16874

  CVSS Scores

  Base 9.3 / Temporal 6.9

  Description

  Microsoft has released security update for Visual Studio which resolves multiple security vulnerabilities.

  Affected Software:
  Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)
  Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)
  Microsoft Visual Studio 2019 version 16.7 (includes 16.0 - 16.6)
  Microsoft Visual Studio 2019 version 16.0
  Microsoft Visual Studio 2015 Update 3
  Microsoft Visual Studio 2013 Update 5
  Microsoft Visual Studio 2012 Update 5
  

  QID Detection Logic:Authenticated
  This QID detects vulnerable versions of Microsoft Visual Studio by checking file version of devenv.exe.

  Consequence

  Successful exploitation can affect confidentiality, integrity and availability.

  Solution

  Customers are advised to refer to CVE-2020-16856,CVE-2020-1133,CVE-2020-16874,CVE-2020-1130 for more information pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2020-1130 WIndows
  CVE-2020-1133 WIndows
  CVE-2020-16856 WIndows
  CVE-2020-16874 WIndows

• Microsoft OneDrive for Windows Elevation of Privilege Vulnerability

  Severity

  Critical 4

  Qualys ID

  91676

  Vendor Reference

  CVE-2020-16851, CVE-2020-16852, CVE-2020-16853

  CVE Reference

  CVE-2020-16851, CVE-2020-16852, CVE-2020-16853

  CVSS Scores

  Base 3.6 / Temporal 2.7

  Description

  Microsoft has released security update for One Drive which resolves multiple security vulnerabilities.

  Affected Software:
  OneDrive for Windows - Version prior to 20.143.0716.0003

  QID Detection Logic(Authenticated)
  This authenticated QID detects vulnerable versions by checking file version of OneDrive.exe lower than 20.143.0716.0003 and 20.114.0607.0002

  Consequence

  An elevation of privilege vulnerability exists when the OneDrive for Windows Desktop application improperly handles symbolic links. An attacker who successfully exploited this vulnerability could overwrite a targeted file with an elevated status.

  Solution

  Customers are advised to refer to CVE-2020-16851,CVE-2020-16852,CVE-2020-16853 for more information pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2020-16851 WIndows
  CVE-2020-16852 WIndows
  CVE-2020-16853 WIndows

• Microsoft ASP.NET Core Security Feature Bypass Vulnerability September 2020

  Severity

  Serious 3

  Qualys ID

  91677

  Vendor Reference

  CVE-2020-1045

  CVE Reference

  CVE-2020-1045

  CVSS Scores

  Base 5 / Temporal 3.9

  Description

  A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.

  This security update is rated Important for supported versions of Microsoft .NET Framework.

  Affected versions:
  .NET Core 2.1.x prior to 2.1.22
  .NET Core 3.1.x prior to 3.1.8

  QID Detection Logic (Authenticated):
  The qid looks for sub directories under %programfiles%\dotnet\shared\Microsoft.NETCore.App, %programfiles(x86)%\dotnet\shared\Microsoft.NETCore.App and checks for vulnerable versions in .version file on windows.

  Consequence

  Successful exploitation allows attacker to bypass the security feature and allows set a second cookie with the name being percent encoded.

  Solution

  Customers are advised to refer to CVE-2020-1045 for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  .Net Core 2.1
  .Net Core 3.1

• Microsoft Edge Security Update for September 2020

  Severity

  Critical 4

  Qualys ID

  91678

  Vendor Reference

  KB4570333, KB4571756, KB4574727, KB4577015, KB4577032, KB4577041, KB4577049

  CVE Reference

  CVE-2020-0878, CVE-2020-1057, CVE-2020-1172, CVE-2020-1180

  CVSS Scores

  Base 9.3 / Temporal 7.3

  Description

  Microsoft releases the security update for Microsoft Edge September 2020

  The KB Articles associated with the update:
  KB4577032
  KB4570333
  KB4574727
  KB4577041
  KB4571756
  KB4577049
  KB4577015
  

  QID Detection Logic:Authenticated
  This QID checks for the file version of edgehtml.dll

  Consequence

  On successfull exploitation, An attacker could host a specially crafted website that is designed to exploit the vulnerability through Microsoft Edge, and then convince a user to view the website.
  Additionally an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

  Solution

  Please refer to the CVE-2020-0878, CVE-2020-1057, CVE-2020-1172, and CVE-2020-1180 for more information pertaining to these vulnerabilities.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2020-0878
  CVE-2020-1057
  CVE-2020-1172
  CVE-2020-1180

• Microsoft Windows Servicing Stack Security Update September 2020

  Severity

  Medium 2

  Qualys ID

  91679

  Vendor Reference

  ADV990001

  CVE Reference

  N/A

  CVSS Scores

  Base 6.8 / Temporal 5

  Description

  Servicing stack updates improve the reliability of the update process to mitigate potential issues while installing the latest quality updates and feature updates. If you don't install the latest servicing stack update, there's a risk that your device can't be updated with the latest Microsoft security fixes.

  Microsoft has released Servicing Stack security updates for Windows.

  QID Detection Logic (Authenticated):
  This authenticated QID will check for file version of CbsCore.dll

  Consequence

  Successful exploitation may allow unauthorized disclosure of information, unauthorized modification or disruption of service.

  Solution

  Customers are advised to refer to advisory ADV990001 for more information.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  ADV990001

Access for Qualys Customers

Platforms and Platform Identification

Technical Support

For more information, customers may contact Qualys Technical Support.

About Qualys

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