Microsoft security alert.

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Enterprise TruRisk Platform to protect organizations against 78 vulnerabilities that were fixed in 15 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 15 security bulletins to fix newly discovered flaws in their software. Qualys has released the following checks for these new vulnerabilities:

• Microsoft Outlook Spoofing Vulnerability for August 2023

  Severity

  Critical 4

  Qualys ID

  110443

  Vendor Reference

  Microsoft Security Guide, KB5002449, KB5002459

  CVE Reference

  CVE-2023-36893

  CVSS Scores

  Base 7.8 / Temporal 5.8

  Description

  Microsoft has released August 2023 security updates for outlook to fix a Spoofing Vulnerability.

  This security update contains the following KBs:
  KB5002449
  KB5002459
  

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

  Consequence

  Successful exploitation will lead to Spoofing Vulnerability.

  Solution

  Refer to Microsoft Security Guide, KB5002449, KB5002459 for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  August 2023

• Microsoft SharePoint Server Update for August 2023

  Severity

  Critical 4

  Qualys ID

  110444

  Vendor Reference

  5002398, KB5002422, KB5002436, KB5002437, KB5002453

  CVE Reference

  CVE-2023-36890, CVE-2023-36891, CVE-2023-36892, CVE-2023-36894

  CVSS Scores

  Base 9 / Temporal 6.7

  Description

  Microsoft has released August 2023 security updates security updates to fix multiple security vulnerabilities.

  This security update contains the following KBs:

  KB5002437
  KB5002436
  KB5002422
  KB5002453
  KB5002398

  QID Detection Logic (Authenticated):
  Operating System: Windows
  

  Consequence

  Successful exploitation allows spoofing.

  Solution

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

  KB5002437
  KB5002436
  KB5002422
  KB5002453
  KB5002398
  

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  August 2023

• Microsoft Office Security Update for August 2023

  Severity

  Critical 4

  Qualys ID

  110445

  Vendor Reference

  5002451, KB5002435, KB5002445, KB5002463, KB5002464

  CVE Reference

  CVE-2023-35371, CVE-2023-35372, CVE-2023-36865, CVE-2023-36866, CVE-2023-36893, CVE-2023-36895, CVE-2023-36896, CVE-2023-36897

  CVSS Scores

  Base 7.2 / Temporal 5.3

  Description

  Microsoft has released August 2023 security updates to fix multiple security vulnerabilities.

  This security update contains the following:

  Office Click-2-Run and Office 365 Release Notes
  KB5002451
  KB5002463
  KB5002435
  KB5002445
  KB5002464
  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. Patched Versions for Microsoft 365 Apps for enterprise, Microsoft 365 Apps for business, Office 2016 Retail (C2R), Office 2019, Office Current Channel: Version 2307 (Build 16626.20170) Monthly Enterprise Channel: Version 2306 (Build 16529.20226).
  Monthly Enterprise Channel: Version 2305 (Build 16501.20286).
  Semi-Annual Enterprise Channel (Preview): Version 2302 (Build 16130.20714).
  Semi-Annual Enterprise Channel: Version 2302 (Build 16130.20714).
  Semi-Annual Enterprise Channel: Version 2208 (Build 15601.20742).
  Semi-Annual Enterprise Channel: Version 2202 (Build 14931.21078).
  Office 2021 Retail: Version 2307 (Build 16626.20170).
  Office 2019 Retail: Version 2307 (Build 16626.20170).
  Office 2016 Retail: Version 2306 Version 2307 (Build 16626.20170).
  Office LTSC 2021 Volume Licensed: Version 2108 (Build 14332.20546).
  Office 2019 Volume Licensed: Version 1808 (Build 10401.20025).
  

  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 allows an attacker to execute code remotely.

  Solution

  KB5002451
  KB5002463
  KB5002435
  KB5002445
  KB5002464
  

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft office July 2023

• Microsoft Edge Based on Chromium Prior to 115.0.1901.200/Extended Stable Version 114.0.1823.106 Multiple Vulnerabilities

  Severity

  Critical 4

  Qualys ID

  378744

  Vendor Reference

  Edge (chromium based) 115.0.1901.200

  CVE Reference

  CVE-2023-4068, CVE-2023-4069, CVE-2023-4070, CVE-2023-4071, CVE-2023-4072, CVE-2023-4073, CVE-2023-4074, CVE-2023-4075, CVE-2023-4076, CVE-2023-4077, CVE-2023-4078, CVE-2023-38157

  CVSS Scores

  Base 5.4 / Temporal 4.3

  Description

  EdgeChromium has released security update for Mac and Windows to fix the vulnerabilities.
  QID Detection Logic: (Authenticated).
  It checks package versions to check for the vulnerable packages.

  
  Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

  Consequence

  Successful exploitation of this vulnerability could lead to a security breach or could affect integrity, availability, and confidentiality.

  Solution

  Customers are advised to upgrade to version 115.0.1901.200 or later

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Edge (chromium based) 115.0.1901.200

• Microsoft Teams Remote Code Execution (RCE) Vulnerability for August 2023

  Severity

  Critical 4

  Qualys ID

  378755

  Vendor Reference

  ,CVE-2023-29330, CVE-2023-29328

  CVE Reference

  CVE-2023-29328, CVE-2023-29330

  CVSS Scores

  Base 7.8 / Temporal 5.8

  Description

  Microsoft Teams is a proprietary business communication platform and primarily competes with the similar service Slack, offering workspace chat and videoconferencing, file storage, and application integration.

  Affected Versions:
  Microsoft Teams for Desktop Versions Prior to 1.6.00.18681
  

  QID Detection Logic(Auth):
  QID checks for the vulnerable version of Teams.
  

  Consequence

  Vulnerable versions of Microsoft Teams are prone to Remote Code Execution Vulnerability
  

  Solution

  The vendor has addressed this vulnerability in Microsoft Teams
  For more information, please visit CVE-2023-29328 For more information, please visit CVE-2023-29330

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2023-29328
  CVE-2023-29330

• Microsoft Exchange Server Multiple Vulnerabilities for August 2023

  Severity

  Urgent 5

  Qualys ID

  50127

  Vendor Reference

  KB5029388

  CVE Reference

  CVE-2023-21709, CVE-2023-35368, CVE-2023-35388, CVE-2023-38181, CVE-2023-38182, CVE-2023-38185

  CVSS Scores

  Base 7.5 / Temporal 5.5

  Description

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

  KB Articles associated with this update are: KB5029388 or KB5030524

  Affected Versions:
  Microsoft Exchange Server 2016 Cumulative Update 23
  Microsoft Exchange Server 2019 Cumulative Update 12
  Microsoft Exchange Server 2019 Cumulative Update 13
  

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

  Note: For CVE-2023-21709: There is script available, run the CVE-2023-21709.ps1 script

  Consequence

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

  Solution

  Microsoft has released patch, customers are advised to refer to 5029388 or 5030524for information pertaining to this vulnerability.
  

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB5029388
  KB5030524

• Microsoft .NET Framework Security Update for August 2023

  Severity

  Serious 3

  Qualys ID

  92042

  Vendor Reference

  KB5028948, KB5028952, KB5029566, KB5029567, KB5029568, KB5029569, KB5029647, KB5029648, KB5029649, KB5029650, KB5029651, KB5029652, KB5029653, KB5029654, KB5029655

  CVE Reference

  CVE-2023-36873, CVE-2023-36899

  CVSS Scores

  Base 7.1 / Temporal 5.6

  Description

  An Elevation of Privileges and Spoofing Vulnerabilities exist in Microsoft .Net Framework.

  Following KBs are covered in this detection:
  KB5029654
  KB5029569
  KB5029649
  KB5029655
  KB5029653
  KB5029568
  KB5029647
  KB5029650
  KB5028952
  KB5028948
  KB5029648
  KB5029652
  KB5029567
  KB5029651
  KB5029566

  This security update is rated Important for supported versions of Microsoft .NET Framework.
  .NET Framework 2.0, 3.0, 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, and 4.8.1

  QID Detection Logic (Authenticated):
  Checks for vulnerable file version of ntoskrnl.exe or Mscorlib.dll or System.core.dll or System.web.dll for the respective .Net Framework KBs
  

  Consequence

  Successful exploitation may allow a attacker to exploit Elevation of Privileges and/or Spoofing vulnerabilities.
  

  Solution

  Customers are advised to refer to CVE-2023-36899 and CVE-2023-36873 for more details pertaining to these vulnerabilities.
  

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2023-36873
  CVE-2023-36899

• Microsoft Dynamics Business Central Elevation of Privilege Vulnerability for August 2023

  Severity

  Critical 4

  Qualys ID

  92043

  Vendor Reference

  CVE-2023-38167

  CVE Reference

  CVE-2023-38167

  CVSS Scores

  Base 6.5 / Temporal 4.8

  Description

  Microsoft Dynamics 365 Business Central is an enterprise resource planning system from Microsoft. The product is part of the Microsoft Dynamics family, and shares the same codebase as NAV.

  
  CVE-2023-38167:Microsoft Dynamics Business Central Elevation Of Privilege Vulnerability.

  Affected Software:

  Microsoft Dynamics 365 Business Central 2023 Release Wave 1 - Update
  QID Detection Logic(Authenticated):
  This authenticated QID flags vulnerable systems by detecting Vulnerable versions for file Microsoft.Dynamics.Nav.Server.exe

  Consequence

  Successful exploit could compromise Confidentiality, Integrity and Availability

  Solution

  Customers are advised to refer to CVE-2023-38167 for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB5029765

• Azure DevOps Server Spoofing Vulnerability for August 2023

  Severity

  Serious 3

  Qualys ID

  92044

  Vendor Reference

  CVE-2023-36869

  CVE Reference

  CVE-2023-36869

  CVSS Scores

  Base 6.8 / Temporal 5

  Description

  Azure DevOps Server is a Microsoft product that provides version control, reporting, requirements management, project management, automated builds, testing, and release management capabilities.
  CVE-2023-36869: Azure DevOps Server Spoofing Vulnerability.

  Affected Software:
  Azure DevOps Server 2019.0.1
  Azure DevOps Server 2019.1.2
  Azure DevOps Server 2020.1.2
  Azure DevOps Server 2022.0.1

  QID Detection Logic(Authenticated):
  This authenticated QID flags vulnerable systems by detecting Vulnerable versions for file Microsoft.TeamFoundation.Framework.Server.dll.
  

  Consequence

  Successful exploitation could allow spoofing vulnerability.

  Solution

  Customers are advised to refer to CVE-2023-36869 for more details.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2023-36869

• Microsoft Azure Stack Hub Security Updates for August 2023

  Severity

  Critical 4

  Qualys ID

  92045

  Vendor Reference

  Azure Stack Hub

  CVE Reference

  CVE-2023-20569, CVE-2023-35359, CVE-2023-35376, CVE-2023-35377, CVE-2023-35378, CVE-2023-35380, CVE-2023-35381, CVE-2023-35382, CVE-2023-35383, CVE-2023-35384, CVE-2023-35385, CVE-2023-35386, CVE-2023-35387, CVE-2023-36882, CVE-2023-36889, CVE-2023-36900, CVE-2023-36903, CVE-2023-36904, CVE-2023-36905, CVE-2023-36906, CVE-2023-36907, CVE-2023-36908, CVE-2023-36909, CVE-2023-36910, CVE-2023-36911, CVE-2023-36912, CVE-2023-36913, CVE-2023-38154, CVE-2023-38172, CVE-2023-38184, CVE-2023-38254

  CVSS Scores

  Base 7.8 / Temporal 6.4

  Description

  Azure Stack Hub is an extension of Azure that provides a way to run apps in an on-premises environment and deliver Azure services in your datacenter.

  A complete Qualys vulnerability scan report for Microsoft Azure Stack Hub can be obtained at Azure Stack Vulnerability Scan Report.

  QID Detection Logic (Authenticated):
  This QID checks for the file version of ntoskrnl.exe, if this file version is less than 10.0.17763.11626, it is considered as vulnerable.
  

  Consequence

  Successful exploit could compromise Confidentiality, Integrity and Availability

  Solution

  Customers are encouraged to connect with Microsoft for obtaining more information about patches and upcoming releases.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Azure Stack Hub

• Microsoft Windows Security Update for August 2023

  Severity

  Urgent 5

  Qualys ID

  92046

  Vendor Reference

  KB5029242, KB5029244, KB5029247, KB5029250, KB5029253, KB5029259, KB5029263, KB5029295, KB5029296, KB5029301, KB5029304, KB5029307, KB5029308, KB5029312, KB5029318

  CVE Reference

  CVE-2023-20569, CVE-2023-35359, CVE-2023-35376, CVE-2023-35377, CVE-2023-35378, CVE-2023-35379, CVE-2023-35380, CVE-2023-35381, CVE-2023-35382, CVE-2023-35383, CVE-2023-35384, CVE-2023-35385, CVE-2023-35386, CVE-2023-35387, CVE-2023-36876, CVE-2023-36882, CVE-2023-36889, CVE-2023-36898, CVE-2023-36900, CVE-2023-36903, CVE-2023-36904, CVE-2023-36905, CVE-2023-36906, CVE-2023-36907, CVE-2023-36908, CVE-2023-36909, CVE-2023-36910, CVE-2023-36911, CVE-2023-36912, CVE-2023-36913, CVE-2023-36914, CVE-2023-38154, CVE-2023-38170, CVE-2023-38172, CVE-2023-38184, CVE-2023-38186, CVE-2023-38254

  CVSS Scores

  Base 7.5 / Temporal 6.2

  Description

  Microsoft Windows Security Update - August 2023

  The patch version is 6.3.9600.21501 for 5029312
  The patch version is 6.3.9600.21501 for 5029304
  The patch version is 6.2.9200.24412 for 5029295
  The patch version is 6.2.9200.24412 for 5029308
  The patch version is 6.1.7601.26662 for 5029296
  The patch version is 6.1.7601.26662 for 5029307
  The patch version is 6.0.6003.22214 for 5029318
  The patch version is 6.0.6003.22214 for 5029301
  The patch version is 10.0.14393.6167 for 5029242
  The patch version is 10.0.10240.20107 for 5029259
  The patch version is 10.0.19041.3324 for 5029244
  The patch version is 10.0.22621.2134 for 5029263
  The patch version is 10.0.22000.2295 for 5029253
  The patch version is 10.0.20348.1906 for 5029250
  The patch version is 10.0.17763.4737 for 5029247

  QID Detection Logic (Authenticated):
  

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

  Consequence

  Successful exploit could compromise Confidentiality, Integrity and Availability

  Solution

  Please refer to the following KB Articles associated with the update:
  5029312
  5029304
  5029295
  5029308
  5029296
  5029307
  5029318
  5029301
  5029242
  5029259
  5029244
  5029263
  5029253
  5029250
  5029247
  

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB5029242
  KB5029244
  KB5029247
  KB5029250
  KB5029253
  KB5029259
  KB5029263
  KB5029295
  KB5029296
  KB5029301
  KB5029304
  KB5029307
  KB5029308
  KB5029312
  KB5029318

• Microsoft .NET Security Update for August 2023

  Severity

  Serious 3

  Qualys ID

  92047

  Vendor Reference

  CVE-2023-35390, CVE-2023-35391, CVE-2023-38178, CVE-2023-38180

  CVE Reference

  CVE-2023-35390, CVE-2023-35391, CVE-2023-38178, CVE-2023-38180

  CVSS Scores

  Base 7.2 / Temporal 5.6

  Description

  Microsoft has released a security Update for .NET which resolves Information Disclosure, Remote Code Execution, and Denial of Service vulnerabilities.

  Affected versions:
  .NET 6.0 before version 6.0.21
  .NET 7.0 before version 7.0.10
  

  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 Visual Studio are prone to Information Disclosure, Remote Code Execution, and Denial of Service vulnerabilities.

  Solution

  Customers are advised to refer to CVE-2023-35391, CVE-2023-35390, CVE-2023-38178, and CVE-2023-38180 for more information on these vulnerabilities and their patches.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2023-35390
  CVE-2023-35391
  CVE-2023-38178
  CVE-2023-38180

• Microsoft Windows Codecs Library HEVC Video Extensions Remote Code Execution (RCE) Vulnerability for August 2023

  Severity

  Critical 4

  Qualys ID

  92049

  Vendor Reference

  CVE-2023-38170

  CVE Reference

  CVE-2023-38170

  CVSS Scores

  Base 4.6 / Temporal 3.4

  Description

  A remote code execution vulnerability exists in the way that Microsoft Windows Codecs Library handles objects in memory.

  Affected Product:
  HEVC Video Extensions before 2.0.61931.0
  HEVC Video Extensions before 2.0.61933.0
  QID detection Logic:
  The gets the version of HEVCVideoExtension and AV1VideoExtension by querying wmi class Win32_InstalledStoreProgram.

  Consequence

  An attacker who successfully exploited this vulnerability can compromise confidentiality, integrity and availability of the system

  Solution

  Users are advised to check CVE-2023-38170

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2023-38170

• Microsoft Visual Studio Security Updates for August 2023

  Severity

  Critical 4

  Qualys ID

  92052

  Vendor Reference

  CVE-2023-35390, CVE-2023-35391, CVE-2023-38178, CVE-2023-38180

  CVE Reference

  CVE-2023-35390, CVE-2023-35391, CVE-2023-38178, CVE-2023-38180

  CVSS Scores

  Base 8.7 / Temporal 6.8

  Description

  Microsoft has released security Updates for Visual Studio which resolve Security Feature Bypass and Escalation of Privileges Vulnerabilities.

  Affected Software:
  Microsoft Visual Studio 2022 version 17.6
  Microsoft Visual Studio 2022 version 17.4
  Microsoft Visual Studio 2022 version 17.2
  

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

  Consequence

  An unauthenticated attacker could bypass validation as a trusted source through a crafted certificate that could mislead a user to believing the file, they are installing is legitimate.

  Solution

  Customers are advised to refer to CVE-2023-35391,CVE-2023-38178,CVE-2023-38180,CVE-2023-35390 for more information on these vulnerabilities and their patches.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2023-35390
  CVE-2023-35391
  CVE-2023-36897
  CVE-2023-38178
  CVE-2023-38180

• Microsoft Windows Defender Elevation of Privilege Vulnerability for August 2023

  Severity

  Critical 4

  Qualys ID

  92053

  Vendor Reference

  CVE-2023-38175

  CVE Reference

  CVE-2023-38175

  CVSS Scores

  Base 4.6 / Temporal 3.4

  Description

  Microsoft Defender is prone to Elevation of Privilege Vulnerability.

  Affected Software:
  Windows Defende Antimalware Platform

  Affected Version:
  Windows Defender prior to build 1.1.23060.3001
  QID Detection Logic (Authenticated):
  The authenticated check looks for a vulnerable version of file under system32 directory MpSigStub.exe
  

  Consequence

  An attacker who successfully exploited this vulnerability could gain specific limited SYSTEM privileges.

  Solution

  Users are advised to check CVE-2023-38175 for more information.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2023-38175

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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