Microsoft security alert.

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Enterprise TruRisk Platform to protect organizations against 55 vulnerabilities that were fixed in 9 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 9 security bulletins to fix newly discovered flaws in their software. Qualys has released the following checks for these new vulnerabilities:

• Microsoft Outlook Security Update for February 2024

  Severity

  Critical 4

  Qualys ID

  110457

  Vendor Reference

  KB5002543

  CVE Reference

  CVE-2024-21378, CVE-2024-21402

  CVSS Scores

  Base 9 / Temporal 7.1

  Description

  Microsoft has released February 2024 security updates for outlook to fix a Remote Code Execution Vulnerability.

  This security update contains the following:

  CVE-2023-35636: Information Disclosure Vulnerability
  KB5002543 and
  Office Click-2-Run and Office 365 Release Notes

  Patched Versions for Microsoft 365 (C2R) are:
  Current Channel: Version 2401 (Build 17231.20236)
  Monthly Enterprise Channel: Version 2312 (Build 17126.20190)
  Monthly Enterprise Channel: Version 2311 (Build 17029.20178)
  Semi-Annual Enterprise Channel (Preview): Version 2308 (Build 16731.20550)
  Semi-Annual Enterprise Channel: Version 2308 (Build 16731.20550)
  Semi-Annual Enterprise Channel: Version 2302 (Build 16130.20916)
  Semi-Annual Enterprise Channel: Version 2208 (Build 15601.20870)
  Office 2021 Retail: Version 2401 (Build 17231.20236)
  Office 2019 Retail: Version 2401 (Build 17231.20236)
  Office 2016 Retail: Version 2401 (Build 17231.20236)
  Office LTSC 2021 Volume Licensed: Version 2108 (Build 14332.20637)
  Office 2019 Volume Licensed: Version 1808 (Build 10407.20032)

  QID Detection Logic (Authenticated):
  Operating System: Windows
  The detection extracts the Install Path for Microsoft Office via the Windows Registry. The QID checks the file version of "graph.exe" to identify vulnerable versions of Microsoft Office.

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

  Consequence

  Successful exploitation will lead to Remote Code Execution and/or Elevation of Privilege Vulnerabilities.

  Solution

  Refer to Microsoft Security Guide, and KB5002543
  for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft Outlook February 2024

• Microsoft Office Remote Code Execution (RCE) Vulnerability for February 2024

  Severity

  Urgent 5

  Qualys ID

  110458

  Vendor Reference

  KB5002467, KB5002469, KB5002491, KB5002492, KB5002495, KB5002519, KB5002522, KB5002536, KB5002537, KB5002542, Office Click-2-Run and Office 365 Release Notes

  CVE Reference

  CVE-2024-20673, CVE-2024-21379, CVE-2024-21384, CVE-2024-21413

  CVSS Scores

  Base 10 / Temporal 7.8

  Description

  Microsoft has released February 2024 security updates to fix multiple security vulnerabilities.

  This security update contains the following:
  Office Click-2-Run and Office 365 Release Notes and
  KB5002492
  KB5002542
  KB5002491
  KB5002495
  KB5002537
  KB5002467
  KB5002522
  KB5002469
  KB5002536
  KB5002519
  

  Patched Versions for Microsoft 365 (C2R) are:
  Current Channel: Version 2401 (Build 17231.20236)
  Monthly Enterprise Channel: Version 2312 (Build 17126.20190)
  Monthly Enterprise Channel: Version 2311 (Build 17029.20178)
  Semi-Annual Enterprise Channel (Preview): Version 2308 (Build 16731.20550)
  Semi-Annual Enterprise Channel: Version 2308 (Build 16731.20550)
  Semi-Annual Enterprise Channel: Version 2302 (Build 16130.20916)
  Semi-Annual Enterprise Channel: Version 2208 (Build 15601.20870)
  Office 2021 Retail: Version 2401 (Build 17231.20236)
  Office 2019 Retail: Version 2401 (Build 17231.20236)
  Office 2016 Retail: Version 2401 (Build 17231.20236)
  Office LTSC 2021 Volume Licensed: Version 2108 (Build 14332.20637)
  Office 2019 Volume Licensed: Version 1808 (Build 10407.20032)

  QID Detection Logic (Authenticated):
  Operating System: Windows
  The detection extracts the Install Path for Microsoft Office via the Windows Registry. The QID checks the file version of "graph.exe" to identify vulnerable versions of Microsoft Office.

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

  Consequence

  Vulnerable products may be prone to Remote Code Execution Vulnerability.

  Solution

  Customers are advised to refer to these KB Article(s):
  KB5002492
  KB5002542
  KB5002491
  KB5002495
  KB5002537
  KB5002467
  KB5002522
  KB5002469
  KB5002536
  KB5002519
  and Office Click-2-Run and Office 365 Release Notes for more information regarding these vulnerabilities.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft office February 2024

• Microsoft Exchange Server Vulnerability for Feb 2024

  Severity

  Urgent 5

  Qualys ID

  50136

  Vendor Reference

  CVE-2024-21410

  CVE Reference

  CVE-2024-21410

  CVSS Scores

  Base 10 / Temporal 7.8

  Description

  Microsoft Exchange Server 2019 and 2016 are affected by multiple vulnerabilities.

  KB Articles associated with this update are: KB5035606

  Affected Versions:
  Microsoft Exchange Server 2019 Cumulative Update 14 Microsoft Exchange Server 2019 Cumulative Update 13 Microsoft Exchange Server 2016 Cumulative Update 23

  QID Detection Logic (Authenticated):
  The QID checks for vulnerable version of Microsoft Exchange Server 2019 by checking the file version of Exsetup.exe.

  For Microsoft Exchange Server 2016, please see the vendor advisory for CVE-2024-21410.
  

  QID Detection Logic: (Unauthenticated)
  This QID sends a HTTP GET request to "/owa" endpoint and checks for vulnerable version of Microsoft Exchange Server.

  Consequence

  Successful exploitation of the vulnerability may allow remote code execution and spoofing

  Solution

  Microsoft has released patch, customers are advised to refer to KB5035606 for information pertaining to this vulnerability.
  

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB5035606

• Microsoft Visual Studio Security Update for February 2024

  Severity

  Critical 4

  Qualys ID

  92110

  Vendor Reference

  CVE-2024-21386, CVE-2024-21404

  CVE Reference

  CVE-2024-21386, CVE-2024-21404

  CVSS Scores

  Base 7.8 / Temporal 5.8

  Description

  Microsoft has released February 2024 security updates for Visual Studio to fix multiple security vulnerabilities.

  Affected Software:
  Microsoft Visual Studio 2022 version 17.4
  Microsoft Visual Studio 2022 version 17.6
  Microsoft Visual Studio 2022 version 17.8
  Microsoft Visual Studio 2022 version 17.9

  QID Detection Logic: Authenticated : Windows
  This QID detects vulnerable versions of Microsoft Visual Studio by checking the registry key "HKLM\SOFTWARE\Microsoft" and file "devenv.exe" to check the version of the Visual Studio.
  

  Consequence

  Vulnerable versions of Microsoft Visual Studio are prone to Denial of Service vulnerability.

  Solution

  Customers are advised to refer to CVE-2024-21404, CVE-2024-213866 for more information on the vulnerability and it's patch.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2024-21386
  CVE-2024-21404

• Microsoft Windows Security Update for February 2024

  Severity

  Urgent 5

  Qualys ID

  92111

  Vendor Reference

  KB5034763, KB5034765, KB5034766, KB5034767, KB5034768, KB5034769, KB5034770, KB5034774, KB5034795, KB5034809, KB5034819, KB5034830, KB5034831, KB5034833

  CVE Reference

  CVE-2024-20684, CVE-2024-21304, CVE-2024-21315, CVE-2024-21338, CVE-2024-21339, CVE-2024-21340, CVE-2024-21341, CVE-2024-21342, CVE-2024-21343, CVE-2024-21344, CVE-2024-21346, CVE-2024-21347, CVE-2024-21348, CVE-2024-21349, CVE-2024-21350, CVE-2024-21351, CVE-2024-21352, CVE-2024-21354, CVE-2024-21355, CVE-2024-21356, CVE-2024-21357, CVE-2024-21358, CVE-2024-21359, CVE-2024-21360, CVE-2024-21361, CVE-2024-21362, CVE-2024-21363, CVE-2024-21365, CVE-2024-21366, CVE-2024-21367, CVE-2024-21368, CVE-2024-21369, CVE-2024-21370, CVE-2024-21371, CVE-2024-21372, CVE-2024-21375, CVE-2024-21377, CVE-2024-21391, CVE-2024-21405, CVE-2024-21406, CVE-2024-21412, CVE-2024-21420

  CVSS Scores

  Base 7.5 / Temporal 6.2

  Description

  Microsoft Windows Security Update - February 2024

  Patch version is 6.0.6003.22510 for KB5034795
  Patch version is 6.0.6003.22510 for KB5034833
  Patch version is 10.0.14393.6707 for KB5034767
  Patch version is 10.0.10240.20466 for KB5034774
  Patch version is 10.0.25398.709 for KB5034769
  Patch version is 10.0.22621.3155 for KB5034765
  Patch version is 10.0.19041.4046 for KB5034763
  Patch version is 10.0.22000.2777 for KB5034766
  Patch version is 10.0.20348.2322 for KB5034770
  Patch version is 10.0.17763.5458 for KB5034768
  Patch version is 6.3.9600.21811 for KB5034819
  Patch version is 6.2.9200.24709 for KB5034830
  Patch version is 6.1.7601.26958 for KB5034831
  Patch version is 6.1.7601.26958 for KB5034809

  QID Detection Logic (Authenticated):
  

  This QID checks for the file version of 'ntoskrnl.exe'.

  Note: This QID checks for windows Server 2022 Azuro Hotpatch through below registry key
  HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Update\TargetingInfo\DynamicInstalled\Hotpatch.amd64

  Consequence

  Successful exploit could compromise Confidentiality, Integrity and Availability

  Solution

  Please refer to the following KB Articles associated with the update:
  KB5034795
  KB5034833
  KB5034767
  KB5034774
  KB5034769
  KB5034765
  KB5034763
  KB5034766
  KB5034770
  KB5034768
  KB5034819
  KB5034830
  KB5034831
  KB5034809
  

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB5034763
  KB5034765
  KB5034766
  KB5034767
  KB5034768
  KB5034769
  KB5034770
  KB5034774
  KB5034795
  KB5034809
  KB5034819
  KB5034830
  KB5034831
  KB5034833

• Microsoft .NET Core and ASP.NET Core Security Update for February 2024

  Severity

  Critical 4

  Qualys ID

  92112

  Vendor Reference

  CVE-2024-21386, CVE-2024-21404

  CVE Reference

  CVE-2024-21386, CVE-2024-21404

  CVSS Scores

  Base 7.8 / Temporal 5.8

  Description

  Microsoft has released February 2024 security updates for .NET Core and ASP.NET Core to fix multiple security vulnerabilities.

  Affected versions:
  ASP.NET Core and .NET Core 8.0 before version 8.0.2
  ASP.NET Core and .NET Core 7.0 before version 7.0.16
  ASP.NET Core and .NET Core 6.0 before version 6.0.27

  QID Detection Logic: Authenticated
  On Windows, this QID detects vulnerable versions of Microsoft .NET by checking the file version.
  On Linux, this QID detects vulnerable versions of Microsoft .NET by checking the .NET version present in "/usr/share/dotnet/shared/Microsoft.NETCore.App/" and "/root/shared/Microsoft.NETCore.App" folders.
  On Mac, this QID detects vulnerable versions of Microsoft .NET by checking the .NET version present in "/usr/share/dotnet/shared/Microsoft.NETCore.App/" folder.
  

  Consequence

  Vulnerable versions of Microsoft .NET Core and ASP.NET Core are prone to Denial of Service vulnerability.

  Solution

  Customers are advised to refer to CVE-2024-21404, CVE-2024-213866 for more information on the vulnerability and it's patch.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2024-21386
  CVE-2024-21404

• Azure Connected Machine Agent Elevation of Privilege Vulnerability

  Severity

  Serious 3

  Qualys ID

  92113

  Vendor Reference

  CVE-2024-21329

  CVE Reference

  CVE-2024-21329

  CVSS Scores

  Base 4.3 / Temporal 3.2

  Description

  The Azure Connected Machine agent enables you to manage your Windows and Linux machines hosted outside of Azure on your corporate network or other cloud providers. Affected versions:
  All versions before version 1.38
  

  QID Detection Logic: Authenticated
  On Windows, this QID detects vulnerable versions by checking the file version.
  On Linux, this QID detects vulnerable versions by checking the Azure Arc-enabled version present in "/usr/share/dotnet/shared/Azure Arc-enabled/" and "/root/shared/Azure Arc-enabled" folders.
  

  Consequence

  Prone to Agent Elevation of Privilege Vulnerability

  Solution

  Customers are advised to refer to CVE-2024-21329

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2024-21329

• Microsoft Windows Server Security Update for February 2024

  Severity

  Urgent 5

  Qualys ID

  92115

  Vendor Reference

  CVE-2024-21345, CVE-2024-21353

  CVE Reference

  CVE-2024-21345, CVE-2024-21353

  CVSS Scores

  Base 6.5 / Temporal 4.8

  Description

  Microsoft Windows Server Security Update for February 2024

  Affected OS : Windows Server 2022, 23H2 Edition (Server Core installation)

  Patch version is 10.0.25398.709 for KB5034769

  QID Detection Logic (Authenticated):
  

  This QID checks for the file version of 'ntoskrnl.exe'.

  Consequence

  Successful exploitation of these vulnerabilities may allow an attacker to gain SYSTEM privileges or execute arbitrary code within the context of the user's SQL client application

  Solution

  Please refer to the following KB Articles associated with the update:
  KB5034769
  

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB5034769

• Microsoft Windows Domain Name System (DNS) Server Denial of Service (DoS) Vulnerability for February 2024

  Severity

  Serious 3

  Qualys ID

  92116

  Vendor Reference

  Microsoft Windows DNS Server Security Advisory

  CVE Reference

  CVE-2023-50387

  CVSS Scores

  Base 5 / Temporal 3.9

  Description

  Microsoft Windows Domain Name System (DNS) Server Security Update - February 2024

  Affected Operating Systems: Windows Server 2012, Windows Server 2012 R2, Windows Server 2008 R2 Service Pack 1, Windows Server 2016, Windows Server 2022, Windows Server 2019, Windows Server 2022, 23H2 Edition (Server Core installation)

  The KB Articles associated with the update:
  Patch version is 6.3.9600.21812 for KB5034819
  Patch version is 6.2.9200.24709 for KB5034830
  Patch version is 6.1.7601.26959 for KB5034831
  Patch version is 6.1.7601.26959 for KB5034809
  Patch version is 10.0.14393.6707 for KB5034767
  Patch version is 10.0.25398.709 for KB5034769
  Patch version is 10.0.20348.2322 for KB5034770
  Patch version is 10.0.17763.5458 for KB5034768

  QID Detection Logic:
  Authenticated: This QID checks for the file version of dns.exe

  Unauthenticated: This QID checks for vulnerable version of Microsoft DNS by checking the DNS version exposed in the banner.

  Consequence

  Successful exploitation of this vulnerability may allow an attacker to exhaust CPU and cause Denial of Service (DoS).

  Solution

  Vendor has released patch. Please refer to Microsoft Windows DNS Server Security Advisory for more information.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft Windows DNS Server Security Advisory

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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