Microsoft security alert.

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Enterprise TruRisk Platform to protect organizations against 94 vulnerabilities that were fixed in 11 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 11 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 November 2020

  Severity

  Critical 4

  Qualys ID

  100412

  Vendor Reference

  KB4586768, KB4586781, KB4586785, KB4586786, KB4586787, KB4586793, KB4586827, KB4586830, KB4586834, KB4586845

  CVE Reference

  CVE-2020-17052, CVE-2020-17053, CVE-2020-17058

  CVSS Scores

  Base 7.6 / Temporal 5.6

  Description

  Microsoft releases the security update for Internet Explorer November 2020

  The KB Articles associated with the update:
  KB4586793
  KB4586845
  KB4586787
  KB4586827
  KB4586834
  KB4586785
  KB4586768
  KB4586830
  KB4586781
  KB4586786
  

  This QID checks for the file version of Mshtml.dll

  The following versions of Mshtml.dll with their corresponding KBs are verified:
  KB4586845 - 11.0.9600.19867
  KB4586787 - 11.0.10240.18756
  KB4586827 - 11.0.9600.19867
  KB4586834 - 10.0.9200.22975 , 11.0.9600.19867
  KB4586785 - 11.0.17134.1845
  KB4586768 - 11.0.9600.19867
  KB4586830 - 11.0.14393.4046
  KB4586786 - 11.0.18362.1198 , 11.0.18362.1110 , 11.0.18362.1016
  

  The following versions of Chakra.dll with their corresponding KBs are verified:
  KB4586793 - 11.0.17763.1577
  KB4586781 - 11.0.19041.630
  

  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 KB4586793
  KB4586845
  KB4586787
  KB4586827
  KB4586834
  KB4586785
  KB4586768
  KB4586830
  KB4586781
  KB4586786
  

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

• Microsoft SharePoint Enterprise Server and Foundation Multiple Vulnerabilities November 2020

  Severity

  Critical 4

  Qualys ID

  110365

  Vendor Reference

  KB4486706, KB4486714, KB4486717, KB4486723, KB4486733, KB4486744

  CVE Reference

  CVE-2020-16979, CVE-2020-17015, CVE-2020-17016, CVE-2020-17017, CVE-2020-17060, CVE-2020-17061

  CVSS Scores

  Base 6.8 / Temporal 5

  Description

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

  This security update contains the following KBs:

  KB4486717
  KB4486733
  KB4486714
  KB4486723
  KB4486706
  KB4486744

  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 November 2020

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

  Severity

  Critical 4

  Qualys ID

  110366

  Vendor Reference

  KB4484455, KB4484508, KB4484520, KB4484534, KB4486713, KB4486718, KB4486719, KB4486722, KB4486725, KB4486727, KB4486730, KB4486734, KB4486737, KB4486740, KB4486743

  CVE Reference

  CVE-2020-17019, CVE-2020-17020, CVE-2020-17062, CVE-2020-17063, CVE-2020-17064, CVE-2020-17065, CVE-2020-17066, CVE-2020-17067

  CVSS Scores

  Base 9.3 / Temporal 6.9

  Description

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

  This security update contains the following KBs:
  KB4486734
  KB4486743
  KB4486718
  KB4486727
  KB4486725
  KB4486737
  KB4486722
  KB4486713
  KB4486730
  KB4486740
  KB4486719
  KB4484455
  KB4484520
  KB4484534
  KB4484508
  

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

  Note: Office click-2-run and Office 365 installations need to be either updated manually or need to be set to automatic update. There is no direct download for the patch.

  Consequence

  Successful exploitation allows an attacker to execute code remotely.

  Solution

  Refer to Microsoft Security Guide 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 October 2020

• Microsoft Exchange Server Security Update for November 2020

  Severity

  Critical 4

  Qualys ID

  50103

  Vendor Reference

  KB4588741

  CVE Reference

  CVE-2020-17083, CVE-2020-17084, CVE-2020-17085

  CVSS Scores

  Base 9 / Temporal 7.1

  Description

  An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages.

  The security update corrects the way that Exchange handles these token validations.

  Affected Software:
  Microsoft Exchange Server 2013 Cumulative Update 23
  Microsoft Exchange Server 2016 Cumulative Update 17
  Microsoft Exchange Server 2016 Cumulative Update 18
  Microsoft Exchange Server 2019 Cumulative Update 6
  Microsoft Exchange Server 2019 Cumulative Update 7

  KB articles covered: 4588741.

  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 2013 Cumulative Update 23 is 15.0.1497.8
  The version for Microsoft Exchange Server 2016 Cumulative Update 17 is 15.1.2044.8
  The version for Microsoft Exchange Server 2016 Cumulative Update 18 is 15.1.2106.4
  The version for Microsoft Exchange Server 2019 Cumulative Update 6 is 15.2.659.8
  The version for Microsoft Exchange Server 2019 Cumulative Update 7 is 15.2.721.4

  Consequence

  Successful exploitation allows an attacker to leverage this vulnerability and gain further information from a user.

  Solution

  Customers are advised to refer to KB4588741 for information pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB4588741 windows

• Microsoft Windows Security Update for November 2020

  Severity

  Critical 4

  Qualys ID

  91691

  Vendor Reference

  KB4586781, KB4586785, KB4586786, KB4586787, KB4586793, KB4586805, KB4586807, KB4586808, KB4586817, KB4586823, KB4586827, KB4586830, KB4586834, KB4586845

  CVE Reference

  CVE-2020-1599, CVE-2020-16997, CVE-2020-16998, CVE-2020-16999, CVE-2020-17000, CVE-2020-17001, CVE-2020-17004, CVE-2020-17007, CVE-2020-17010, CVE-2020-17011, CVE-2020-17012, CVE-2020-17013, CVE-2020-17014, CVE-2020-17024, CVE-2020-17025, CVE-2020-17026, CVE-2020-17027, CVE-2020-17028, CVE-2020-17029, CVE-2020-17030, CVE-2020-17031, CVE-2020-17032, CVE-2020-17033, CVE-2020-17034, CVE-2020-17035, CVE-2020-17036, CVE-2020-17037, CVE-2020-17038, CVE-2020-17040, CVE-2020-17041, CVE-2020-17042, CVE-2020-17043, CVE-2020-17044, CVE-2020-17045, CVE-2020-17046, CVE-2020-17047, CVE-2020-17049, CVE-2020-17051, CVE-2020-17055, CVE-2020-17056, CVE-2020-17057, CVE-2020-17068, CVE-2020-17069, CVE-2020-17070, CVE-2020-17071, CVE-2020-17073, CVE-2020-17074, CVE-2020-17075, CVE-2020-17076, CVE-2020-17077, CVE-2020-17087, CVE-2020-17088, CVE-2020-17090, CVE-2020-17113

  CVSS Scores

  Base 10 / Temporal 8.3

  Description

  Microsoft releases the security updates for Windows November 2020 to address the multiple CVEs.

  The KB Articles associated with the update:
  KB4586793
  KB4586845
  KB4586817
  KB4586827
  KB4586834
  KB4586785
  KB4586830
  KB4586787
  KB4586781
  KB4586807
  KB4586786
  KB4586823
  KB4586805
  KB4586808
  

  QID detection Logic:
  

  This QID checks for the file version of "ntoskrnl.exe" and "cng.sys"

  The following versions of "ntoskrnl.exe" with their corresponding KBs are verified:
  KB4586793 - 10.0.17763.1577
  KB4586817 - 6.0.6003.20981
  KB4586827 - 6.1.7601.24562
  KB4586785 - 10.0.17134.1845
  KB4586830 - 10.0.14393.4046
  KB4586787 - 10.0.10240.18756
  KB4586781 - 10.0.19041.630
  KB4586807 - 6.0.6003.20981
  KB4586786 - 10.0.18362.1198
  KB4586805 - 6.1.7601.24562
  

  The following versions of "cng.sys" with their corresponding KBs are verified:
  KB4586845 - 6.3.9600.19871
  KB4586823 - 6.3.9600.19871
  KB4586834 - 6.2.9200.23199
  KB4586808 - 6.2.9200.23199
  

  Note:Qualys found a regression issue in Microsoft December 2020 updates. This makes the Windows 2012 hosts who have December 2020 patch installed are still vulnerable to CVE-2020-17087. We have co-ordinated with Microsoft and Microsoft released an update on January 2021.Please refer to the Qualys Blog January 2021 Patch Tuesday for more information.

  Consequence

  An attacker who successfully exploited the vulnerability could 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 Visual Studio Security Update for November 2020

  Severity

  Critical 4

  Qualys ID

  91693

  Vendor Reference

  CVE-2020-1133, CVE-2020-16856, CVE-2020-16874, CVE-2020-17100

  CVE Reference

  CVE-2020-17100

  CVSS Scores

  Base 2.1 / Temporal 1.6

  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 2019 version 16.8

  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-2020-17100 for more information pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2020-17100 windows

• Microsoft Dynamics 365 Security Update for November 2020

  Severity

  Critical 4

  Qualys ID

  91694

  Vendor Reference

  KB4577009, KB4584611, KB4584612

  CVE Reference

  CVE-2020-17005, CVE-2020-17006, CVE-2020-17018, CVE-2020-17021

  CVSS Scores

  Base 3.5 / Temporal 2.6

  Description

  The following vulnerabilities exist in Microsoft Dynamics 365 (on-premises) and Dynamics 365 Commerce:
  CVE-2020-17018,CVE-2020-17005,CVE-2020-17021,CVE-2020-17006: A cross site scripting vulnerability exists when Microsoft Dynamics 365 (on-premises) does not properly sanitize a specially crafted web request to an affected Dynamics server.

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

  KB Articles:KB4584612,KB4584611,KB4577009

  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
  Microsoft Dynamics 365 (on-premises) version

  Consequence

  Depending on the vulnerability being exploited, an attacker to conduct cross-site scripting attacks or update data without proper authorization.

  Solution

  Customers are advised to refer to KB

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

• Microsoft Windows Servicing Stack Security Update November 2020

  Severity

  Medium 2

  Qualys ID

  91695

  Vendor Reference

  ADV990001

  CVE Reference

  N/A

  CVSS Scores

  Base 3.7 / Temporal 2.7

  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

• Microsoft Edge Security Update for November 2020

  Severity

  Critical 4

  Qualys ID

  91697

  Vendor Reference

  KB4586781, KB4586785, KB4586786, KB4586787, KB4586793, KB4586830

  CVE Reference

  CVE-2020-17048, CVE-2020-17052, CVE-2020-17054, CVE-2020-17058

  CVSS Scores

  Base 7.6 / Temporal 5.6

  Description

  Microsoft releases the security update for Microsoft Edge September 2020

  The KB Articles associated with the update:
  KB4586830
  KB4586787
  KB4586781
  KB4586786
  KB4586793
  KB4586785

  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-2020-17058, CVE-2020-17054, CVE-2020-17052, and CVE-2020-17048 for more information pertaining to these vulnerabilities.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2020-17048
  CVE-2020-17052
  CVE-2020-17054
  CVE-2020-17058

• Microsoft Windows Codecs Library Remote Code Execution Vulnerabilities - November 2020

  Severity

  Critical 4

  Qualys ID

  91698

  Vendor Reference

  CVE-2020-17078, CVE-2020-17079, CVE-2020-17081, CVE-2020-17082, CVE-2020-17086, CVE-2020-17101, CVE-2020-17102, CVE-2020-17105, CVE-2020-17106, CVE-2020-17107, CVE-2020-17108, CVE-2020-17109, CVE-2020-17110

  CVE Reference

  CVE-2020-17078, CVE-2020-17079, CVE-2020-17081, CVE-2020-17082, CVE-2020-17086, CVE-2020-17101, CVE-2020-17102, CVE-2020-17105, CVE-2020-17106, CVE-2020-17107, CVE-2020-17108, CVE-2020-17109, CVE-2020-17110

  CVSS Scores

  Base 10 / Temporal 7.8

  Description

  Multiple security vulnerabilities exist in Microsoft Windows Codecs Library.

  Affected Product:
  WebpImageExtension prior to 1.0.32731.0 HEIFImageExtension prior to 1.0.32532.0 AV1VideoExtension prior to1.1.32442.0 RawImageExtension prior to1.0.32861.0 HEVCVideoExtension prior to 1.0.32762.0 QID detection Logic:
  Detection gets the version of Microsoft.WebpImageExtension, Microsoft.HEIFImageExtension, Microsoft.AV1VideoExtension, Microsoft.RawImageExtension, HEVCVideoExtension by querying wmi class Win32_InstalledStoreProgram.

  Consequence

  An attacker who successfully exploited the vulnerability could execute arbitrary code.

  Solution

  Users are advised to check CVE-2020-17101,CVE-2020-17105,CVE-2020-17102,CVE-2020-17079,CVE-2020-17081,CVE-2020-17082,CVE-2020-17086,CVE-2020-17078,CVE-2020-17106,CVE-2020-17109,CVE-2020-17108,CVE-2020-17110,CVE-2020-17107 for more information.

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

• Microsoft Windows Kernel Privilege Escalation Vulnerability

  Severity

  Critical 4

  Qualys ID

  91690

  Vendor Reference

  KB4586781, KB4586785, KB4586786, KB4586787, KB4586793, KB4586805, KB4586807, KB4586808, KB4586817, KB4586823, KB4586827, KB4586830, KB4586834, KB4586845

  CVE Reference

  CVE-2020-17087

  CVSS Scores

  Base 7.2 / Temporal 6

  Description

  Microsoft windows is prone to privilege escalation vulnerability. (CVE-2020-17087)

  Windows driver bug is being exploited in the wild as a zero-day. It allows local privilege escalation and sandbox escape.

  This vulnerability will not be patched until the next Patch Tuesday on 10-Nov-2020

  Affected Products:
  Windows 7 to all Windows 10 latest release.

  Update 11/10/2020:
  

  Microsoft releases the security updates for Windows November 2020 to address the above CVE.

  The KB Articles associated with the update:
  KB4586793
  KB4586845
  KB4586817
  KB4586827
  KB4586834
  KB4586785
  KB4586830
  KB4586787
  KB4586781
  KB4586807
  KB4586786
  KB4586823
  KB4586805
  KB4586808
  

  QID detection Logic:
  

  This QID checks for the file version of "ntoskrnl.exe" and "cng.sys"

  The following versions of "ntoskrnl.exe" with their corresponding KBs are verified:
  KB4586793 - 10.0.17763.1577
  KB4586817 - 6.0.6003.20981
  KB4586827 - 6.1.7601.24562
  KB4586785 - 10.0.17134.1845
  KB4586830 - 10.0.14393.4046
  KB4586787 - 10.0.10240.18756
  KB4586781 - 10.0.19041.630
  KB4586807 - 6.0.6003.20981
  KB4586786 - 10.0.18362.1198
  KB4586805 - 6.1.7601.24562
  

  The following versions of "cng.sys" with their corresponding KBs are verified:
  KB4586845 - 6.3.9600.19871
  KB4586823 - 6.3.9600.19871
  KB4586834 - 6.2.9200.23199
  KB4586808 - 6.2.9200.23199
  

  Note:Qualys found a regression issue in Microsoft December 2020 updates. This makes the Windows 2012 hosts who have December 2020 patch installed are still vulnerable to CVE-2020-17087. We have co-ordinated with Microsoft and Microsoft released an update on January 2021.Please refer to the Qualys Blog January 2021 Patch Tuesday for more information.

  Consequence

  Successful exploitation of this vulnerability allows attacker to elevate privileges.

  Solution

  Please refer to the CVE-2020-17087 for more information pertaining to these vulnerabilities.

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

Access for Qualys Customers

Platforms and Platform Identification

Technical Support

For more information, customers may contact Qualys Technical Support.

About Qualys

The Enterprise TruRisk Platform and its integrated suite of security and compliance applications provides organizations of all sizes with a global view of their security and compliance solutions, while drastically reducing their total cost of ownership. Qualys solutions include: continuous monitoring, vulnerability management, policy compliance, PCI compliance, security assessment questionnaire, web application scanning, web application firewall, malware detection and SECURE Seal for security testing of web sites.