Microsoft security alert.

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Qualys Cloud Platform to protect organizations against 80 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 Windows Adobe Flash Player Security Update for September 2019 (ADV190022)

  Severity

  Critical 4

  Qualys ID

  100386

  Vendor Reference

  ADV190022

  CVE Reference

  CVE-2019-8069, CVE-2019-8070

  CVSS Scores

  Base 10 / Temporal 8.3

  Description

  The update contains security fixes for Adobe Flash Player on Internet Explorer.

  Affected Versions:
  Windows 10 Version 1507,Windows 10 Version 1607,Windows 10 Version 1703, Windows 10, Windows 10 Version 1803, Windows 10 Version 1809, Windows 10 Version 1903, Windows Server 2019,Windows Server 2016, Windows 8.1, Windows RT 8.1, Windows Server 2012,Windows Server 2012 R2 with Adobe Flash Player version prior to 32.0.0.255.

  QID Detection Logic:
  This authenticated QID will flag if file version of %windir%\System32\Macromed\Flash\Flash.ocx is less than 32.0.0.255.

  Consequence

  An attacker could exploit this vulnerability to compromise Confidentiality, Integrity and/or Availability.

  Solution

  Customers are advised to follow 4516115 for instructions pertaining to the remediation of this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  ADV190022 Windows

• Microsoft Internet Explorer Security Update for September 2019

  Severity

  Critical 4

  Qualys ID

  100387

  Vendor Reference

  KB4512578, KB4515384, KB4516026, KB4516044, KB4516046, KB4516055, KB4516058, KB4516065, KB4516066, KB4516067, KB4516068, KB4516070

  CVE Reference

  CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-1208, CVE-2019-1220, CVE-2019-1221, CVE-2019-1236, CVE-2019-11091

  CVSS Scores

  Base 7.6 / Temporal 6.3

  Description

  Microsoft releases the security update for Internet Explorer September 2019

  The KB Articles associated with the update:
  KB4512578
  KB4515384
  KB4516044
  KB4516046
  KB4516055
  KB4516058
  KB4516065
  KB4516066
  KB4516067
  KB4516068
  KB4516070
  KB4516026
  QID Detection Logic:
  

  This QID checks for the file version of Mshtml.dll

  The following versions of Mshtml.dll with their corresponding KBs are verified:
  KB4516068 - 11.0.15063.2045
  KB4516067 - 11.0.9600.19463
  KB4516046 - 9.0.8112.21368 , 11.0.9600.19463 , 10.0.9200.22858
  KB4516026 - 9.0.8112.21368
  KB4516058 - 11.0.17134.1006
  KB4516055 - 10.0.9200.22858
  KB4515384 - 11.0.18362.356
  KB4516065 - 11.0.9600.19463
  KB4516066 - 11.0.16299.1387
  KB4512578 - 11.0.17763.737
  

  For KB4516044 and KB4516070 "urlmon.dll" is checked in the detection.

  Consequence

  An attacker who successfully exploited the vulnerability could gain the same user rights as the current user.

  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 Office and Microsoft Office Services and Web Apps Security Update September 2019

  Severity

  Critical 4

  Qualys ID

  110338

  Vendor Reference

  KB4461631, KB4464548, KB4464557, KB4464566, KB4475566, KB4475574, KB4475579, KB4475583, KB4475589, KB4475590, KB4475591, KB4475594, KB4475596, KB4475599, KB4475605, KB4475607, KB4475611, KB4484098, KB4484099

  CVE Reference

  CVE-2019-1246, CVE-2019-1257, CVE-2019-1259, CVE-2019-1260, CVE-2019-1261, CVE-2019-1262, CVE-2019-1263, CVE-2019-1264, CVE-2019-1295, CVE-2019-1296, CVE-2019-1297

  CVSS Scores

  Base 9.3 / Temporal 7.3

  Description

  Microsoft has released September 2019 security updates to fix multiple security vulnerabilities.

  This security update contains the following KBs:
  KB4475611
  KB4475591
  KB4475599
  KB4484098
  KB4475590
  KB4475605
  KB4475596
  KB4484099
  KB4475594
  KB4464557
  KB4475574
  KB4475579
  KB4475566
  KB4475607
  KB4475583
  KB4464566
  KB4461631
  KB4475589
  KB4464548
  

  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 2019

• Microsoft Exchange Server Security Update for September 2019

  Severity

  Serious 3

  Qualys ID

  50095

  Vendor Reference

  KB4515832

  CVE Reference

  CVE-2019-1233, CVE-2019-1266

  CVSS Scores

  Base 4.3 / Temporal 3.2

  Description

  Microsoft has released an update for Microsoft Exchange Server that remediates for the following vulnerabilities:
  CVE-2019-1233: A denial of service vulnerability exists in Microsoft Exchange Server 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 Server handles objects in memory.
  CVE-2019-1266: A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web App (OWA) fails to properly handle web requests. To exploit the vulnerability, an attacker could send a specially crafted email containing a malicious link to a user. An attacker could also use a chat client to social engineer a user into clicking the malicious link. However, in both examples the user must click the malicious link. The security update addresses the vulnerability by correcting how OWA validates web requests.

  Affected Software:
  Microsoft Exchange Server 2016 Cumulative Update 12
  Microsoft Exchange Server 2016 Cumulative Update 13
  Microsoft Exchange Server 2019 Cumulative Update 1
  Microsoft Exchange Server 2019 Cumulative Update 2

  KB Articles covered: KB4515832.

  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 12 is 15.1.1713.9.
  The version for Microsoft Exchange Server 2016 Cumulative Update 13 is 15.1.1779.5.
  The version for Microsoft Exchange Server 2019 Cumulative Update 1 is 15.2.330.10.
  The version for Microsoft Exchange Server 2019 Cumulative Update 2 is 15.2.397.6.

  Consequence

  An attacker who successfully exploited the vulnerability could cause a remote denial of service against a system or redirect the user to a malicious website that could spoof content or the vulnerability could be used as a pivot to chain an attack with other vulnerabilities in web services.

  Solution

  Customers are advised to refer to KB4515832 for updates pertaining to these vulnerabilities.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB4515832

• Microsoft Edge Security Update for September 2019

  Severity

  Critical 4

  Qualys ID

  91568

  Vendor Reference

  KB4512578, KB4515384, KB4516044, KB4516058, KB4516066, KB4516068, KB4516070

  CVE Reference

  CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-1138, CVE-2019-1217, CVE-2019-1220, CVE-2019-1237, CVE-2019-1298, CVE-2019-1299, CVE-2019-1300, CVE-2019-11091

  CVSS Scores

  Base 7.6 / Temporal 5.6

  Description

  Microsoft releases the security update for Microsoft Edge September 2019

  The KB Articles associated with the update:
  KB4512578
  KB4515384
  KB4516044
  KB4516058
  KB4516066
  KB4516068
  KB4516070
  QID Detection Logic:
  

  This QID checks for the file version of edgehtml.dll

  The following versions of edgehtml.dll with their corresponding KBs are verified:
  KB4512578 - 11.0.17763.737
  KB4516066 - 11.0.16299.1387
  KB4516070 - 11.0.10240.18333
  KB4516058 - 11.0.17134.1006
  KB4515384 - 11.0.18362.356
  KB4516068 - 11.0.15063.2045
  

  For KB4516044 - "bingmaps.dll" is used in the detection with a patched version of 10.0.14393.3204

  Consequence

  An attacker who successfully exploited the vulnerability could gain the same user rights as the current user.

  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 .NET Framework Security Updates for September 2019

  Severity

  Serious 3

  Qualys ID

  91570

  Vendor Reference

  KB4514354, KB4514355, KB4514356, KB4514357, KB4514359, KB4514598, KB4514599, KB4514601, KB4514603, KB4514604, KB4516058, KB4516066, KB4516068, KB4516070

  CVE Reference

  CVE-2019-1142

  CVSS Scores

  Base 2.1 / Temporal 1.6

  Description

  An elevation of privilege vulnerability exists when the .NET Framework common language runtime (CLR) allows file creation in arbitrary locations.

  KB4514354, KB4514355, KB4514356, KB4514357, KB4514359, KB4514598, KB4514599, KB4514601, KB4514603, KB4514604, KB4516058, KB4516066, KB4516068, KB4516070 kbs are covered.
  This security update is rated Important for supported versions of Microsoft .NET Framework.

  QID Detection Logic (Authenticated):
  - Checks for vulnerable version of Clr.dll, Mscorlib.dll files

  Consequence

  Successful exploitation allows attackers to write files to folders that require higher privileges than what the attacker already has.

  Solution

  Customers are advised to refer to CVE-2019-1142 for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2019-1142

• Microsoft .NET Core Security Update September 2019

  Severity

  Serious 3

  Qualys ID

  91571

  Vendor Reference

  .NET Core

  CVE Reference

  CVE-2019-1301

  CVSS Scores

  Base 5 / Temporal 3.7

  Description

  .NET Core is a general purpose development platform maintained by Microsoft and the .NET community on GitHub. It is cross-platform, supporting Windows, macOS and Linux, and can be used in device, cloud, and embedded/IoT scenarios.

  A denial of service vulnerability exists when .NET Core improperly handles web requests.

  Affected versions
  .NET Core 2.1.0 prior to 2.1.13
  .NET Core 2.2.0 prior to 2.2.7

  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

  An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core web application.

  Solution

  Microsoft has released an update. Please refer to vendor security advisory .NET Core CVE-2019-1301 for more information.
  

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  .NET Core

• Microsoft Windows Security Update for September 2019

  Severity

  Critical 4

  Qualys ID

  91572

  Vendor Reference

  KB4512578, KB4515384, KB4516026, KB4516033, KB4516044, KB4516051, KB4516055, KB4516058, KB4516062, KB4516064, KB4516065, KB4516066, KB4516067, KB4516068, KB4516070

  CVE Reference

  CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-0787, CVE-2019-0788, CVE-2019-0928, CVE-2019-1214, CVE-2019-1215, CVE-2019-1216, CVE-2019-1219, CVE-2019-1232, CVE-2019-1235, CVE-2019-1240, CVE-2019-1241, CVE-2019-1242, CVE-2019-1243, CVE-2019-1244, CVE-2019-1245, CVE-2019-1246, CVE-2019-1247, CVE-2019-1248, CVE-2019-1249, CVE-2019-1250, CVE-2019-1251, CVE-2019-1252, CVE-2019-1253, CVE-2019-1254, CVE-2019-1256, CVE-2019-1267, CVE-2019-1268, CVE-2019-1269, CVE-2019-1270, CVE-2019-1271, CVE-2019-1272, CVE-2019-1273, CVE-2019-1274, CVE-2019-1277, CVE-2019-1278, CVE-2019-1280, CVE-2019-1282, CVE-2019-1283, CVE-2019-1284, CVE-2019-1285, CVE-2019-1286, CVE-2019-1287, CVE-2019-1289, CVE-2019-1290, CVE-2019-1291, CVE-2019-1292, CVE-2019-1293, CVE-2019-1294, CVE-2019-1303, CVE-2019-11091

  CVSS Scores

  Base 9.3 / Temporal 7.7

  Description

  Microsoft releases the security update for Windows September 2019

  The KB Articles associated with the update:
  KB4512578
  KB4515384
  KB4516026
  KB4516033
  KB4516044
  KB4516051
  KB4516055
  KB4516058
  KB4516062
  KB4516064
  KB4516065
  KB4516066
  KB4516067
  KB4516068
  KB4516070
  QID Detection Logic:
  

  This QID checks for the file version of ntoskrnl.exe

  The following versions of ntoskrnl.exe with their corresponding KBs are verified:
  KB4516068 - 10.0.15063.2045
  KB4516067 - 6.3.9600.19464
  KB4516070 - 10.0.10240.18333
  KB4516044 - 10.0.14393.3204
  KB4516051 - 6.0.6003.20625
  KB4516026 - 6.0.6003.20625
  KB4516058 - 10.0.17134.1006
  KB4516055 - 6.2.9200.22859
  KB4516033 - 6.1.7601.24520
  KB4515384 - 10.0.18362.356
  KB4516065 - 6.1.7601.24520
  KB4516062 - 6.2.9200.22859
  KB4516064 - 6.3.9600.19464
  KB4516066 - 10.0.16299.1387
  KB4512578 - 10.0.17763.737
  

  Consequence

  An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim 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 Microsoft Security Update Guide

• Microsoft ASP.NET Core Security Update September 2019

  Severity

  Serious 3

  Qualys ID

  91573

  Vendor Reference

  ASP.NET

  CVE Reference

  CVE-2019-1302

  CVSS Scores

  Base 6.8 / Temporal 5

  Description

  An elevation of privilege vulnerability exists when a ASP.NET Core web application, created using vulnerable project templates, fails to properly sanitize web requests.

  Affected Versions:
  ASP.NET Core 2.1 prior to 2.1.2.
  ASP.NET Core 2.2 prior to 2.2.1.

  QID Detection Logic (Authenticated):
  This QID checks for the vulnerable version of Microsoft.AspNetCore.App and Microsoft.AspNetCore.All
  

  Consequence

  An attacker who successfully exploited this vulnerability could perform content injection attacks and run script in the security context of the logged-on user.

  Solution

  Microsoft has released an update. Please refer to vendor security advisory .NET Core CVE-2019-1302 for more information.
  

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  ASP.NET

• Microsoft Windows Servicing Stack Security Update September 2019

  Severity

  Medium 2

  Qualys ID

  91574

  Vendor Reference

  KB4511839, KB4512573, KB4512574, KB4512575, KB4512576, KB4512577, KB4512938, KB4512939, KB4515383, KB4516655, KB4517134

  CVE Reference

  N/A

  CVSS Scores

  Base 5.1 / Temporal 3.8

  Description

  Microsoft has released Servicing Stack security updates for Windows Server 2008 Service Pack 2 , Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1, Windows 10, Windows 10 Version 1607, Windows 10 Version 1703, Windows 10 Version 1709, Windows 10 Version 1803, Windows 10 Version 1809, Windows 10 Version 1903,Windows 8.1, Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2,Windows Server 2012 R2 (Server Core installation), Windows Server 2016,Windows Server 2016 (Server Core installation), Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server, version 1803 (Server Core Installation), Windows Server, version 1903 (Server Core installation)

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

  Consequence

  Successful exploitation allows attacker to compromise the system.

  Solution

  Customers are advised to refer to advisrory ADV990001for more information.

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

• Microsoft Visual Studio Security Update for September 2019

  Severity

  Serious 3

  Qualys ID

  91575

  Vendor Reference

  CVE-2019-1232

  CVE Reference

  CVE-2019-1232

  CVSS Scores

  Base 4.6 / Temporal 3.4

  Description

  An elevation of privilege vulnerability exists when the Diagnostics Hub Standard Collector Service improperly handles certain file operations. To exploit this vulnerability, an attacker would require unprivileged access to a vulnerable system.

  Affected Software:
  Microsoft Visual Studio 2015 Update 3
  Microsoft Visual Studio 2017 Version 15.0
  Microsoft Visual Studio 2017 Version 15.9
  Microsoft Visual Studio 2019 Version 16.0
  Microsoft Visual Studio 2019 Version 16.2

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

  Consequence

  Successful exploitation of this vulnerability allows an attacker to gain elevated privileges on the system.

  Solution

  Customers are advised to refer to CVE-2019-1232 for more information pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2019-1232

Access for Qualys Customers

Platforms and Platform Identification

Technical Support

For more information, customers may contact Qualys Technical Support.

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