Microsoft security alert.

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Enterprise TruRisk Platform to protect organizations against 47 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 Internet Explorer Security Update for January 2019

  Severity

  Critical 4

  Qualys ID

  100351

  Vendor Reference

  KB4480116, KB4480961, KB4480962, KB4480963, KB4480965, KB4480966, KB4480968, KB4480970, KB4480973, KB4480975, KB4480978

  CVE Reference

  CVE-2019-0541

  CVSS Scores

  Base 9.3 / Temporal 7.7

  Description

  Internet Explorer is a web-browser developed by Microsoft which is included in Microsoft Windows Operating Systems.

  Microsoft has released Cumulative Security Updates for Internet Explorer which addresses various vulnerabilities found in Internet Explorer 9 (IE 9), Internet Explorer 10 (IE 10) and Internet Explorer 11 (IE 11). The most severe of the vulnerabilities could allow remote code execution.

  QID Detection Logic (Authenticated):
  Operating Systems: Windows Server 2008, Windows Server 2008 R2, Windows 7,Windows Embedded Standard 7 , Windows Embedded 8 Standard, Windows 8.1, Windows RT 8.1, Windows 10, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016,Windows Server 2019.
  

  This QID checks for the file version of %windir%\System32\mshtml.dll

  The following versions of mshtml.dll with their corresponding KBs are verified:
  1.KB4480970 - 11.0.9600.19236
  2.KB4480965 - 11.2.9600.19236,9.1.8112.21304,10.0.9200.22644,8.0.6001.24147
  3.KB4480963 - 11.0.9600.19236
  4.KB4480961 - 11.0.14393.2724
  5.KB4480962 - 11.0.10240.18094
  6.KB4480973 - 11.0.15063.1563
  7.KB4480966 - 11.0.17134.523
  8.KB4480116 - 11.0.17763.253
  9.KB4480975 - 10.0.9200.22644
  10.KB4480968 - 9.0.8112.21304
  

  For Windows 10 1709 we check for patched version of %windir%\System32\combase.dll
  KB4480978 - 10.0.16299.904
  

  Consequence

  Successful exploitation of the vulnerability can lead to arbitrary code execution within the context of the current user.

  Solution

  For more information, refer to the Security Update Guide.

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

• Microsoft Office and Microsoft Office Services and Web Apps Security Update January 2019

  Severity

  Critical 4

  Qualys ID

  110328

  Vendor Reference

  KB2553332, KB2596760, KB3172522, KB4022162, KB4461535, KB4461537, KB4461543, KB4461589, KB4461591, KB4461594, KB4461595, KB4461596, KB4461598, KB4461601, KB4461612, KB4461614, KB4461617, KB4461620, KB4461623, KB4461624, KB4461625, KB4461633, KB4461634, KB4461635, KB4462112

  CVE Reference

  CVE-2019-0541, CVE-2019-0556, CVE-2019-0557, CVE-2019-0558, CVE-2019-0559, CVE-2019-0560, CVE-2019-0561, CVE-2019-0562, CVE-2019-0585, CVE-2019-0622

  CVSS Scores

  Base 9.3 / Temporal 7.7

  Description

  Microsoft released security updates in January 2019 to fix multiple security vulnerabilities.

  This security update contains the following KBs:
  KB2553332
  KB2596760
  KB3172522
  KB4022162
  KB4461535
  KB4461537
  KB4461543
  KB4461589
  KB4461591
  KB4461594
  KB4461595
  KB4461596
  KB4461598
  KB4461601
  KB4461612
  KB4461614
  KB4461617
  KB4461620
  KB4461623
  KB4461624
  KB4461625
  KB4461633
  KB4461634
  KB4461635
  KB4462112
  

  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 arbitrary code.

  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 January 2019

• Microsoft Windows Exchange Server Update for January 2019

  Severity

  Critical 4

  Qualys ID

  53020

  Vendor Reference

  CVE-2019-0586, CVE-2019-0588

  CVE Reference

  CVE-2019-0586, CVE-2019-0588

  CVSS Scores

  Base 10 / Temporal 7.4

  Description

  CVE-2019-0588: An information disclosure vulnerability exists when the Microsoft Exchange PowerShell API grants calendar contributors more view permissions than intended. To exploit this vulnerability, an attacker would need to be granted contributor access to an Exchange Calendar by an administrator via PowerShell. The security update addresses the vulnerability by modifying how the Exchange PowerShell API grants permissions to contributors.
  CVE-2019-0586: A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory.

  KB Articles associated with this update are: KB4468742, KB4471389

  Affected Versions:
  Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 25
  Microsoft Exchange Server 2013 Cumulative Update 21
  Microsoft Exchange Server 2016 Cumulative Update 10, 11

  QID Detection Logic (authenticated):
  The QID checks for the version of file Exsetup.exe.
  The version for Microsoft Exchange Server 2016 Cumulative Update 10 is 15.1.1531.8
  The version for Microsoft Exchange Server 2016 Cumulative Update 11 is 15.1.1591.11

  Consequence

  Successful exploitation allows a remote attacker to view additional details about the calendar that would normally be hidden.

  Solution

  Customers are advised to refer to CVE-2019-0588, CVE-2019-0586for information pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2019-0588

• Microsoft Edge Security Update for January 2019

  Severity

  Urgent 5

  Qualys ID

  91493

  Vendor Reference

  KB4480116, KB4480961, KB4480962, KB4480966, KB4480973, KB4480978

  CVE Reference

  CVE-2019-0539, CVE-2019-0565, CVE-2019-0566, CVE-2019-0567, CVE-2019-0568

  CVSS Scores

  Base 7.6 / Temporal 6.3

  Description

  Microsoft Edge is a web browser developed by Microsoft that replaces Internet Explorer as the default web browser. Microsoft Edge is vulnerable to multiple issues.

  The KB Articles associated with the update:
  KB4480116
  KB4480961
  KB4480962
  KB4480966
  KB4480973
  KB4480978

  The QID Detection Logic (Authenticated):
  This QID reviews the file version of %windir%\System32\edgehtml.dll
  The patch version is 11.0.10240.18094 (KB4480962)
  The patch version is 11.0.14393.2724 (KB4480961)
  The patch version is 11.0.15063.1563 (KB4480973)
  The patch version is 11.0.16299.846 (KB4480978)
  The patch version is 11.0.17134.523 (KB4480966)
  The patch version is 11.0.17763.253 (KB4480116)
  

  Consequence

  Depending on the vulnerability being exploited, a remote attacker could exploit these vulnerabilities to bypass security restrictions, gain access to sensitive data or execute arbitrary code on the targeted 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(Edge)

• Microsoft .NET Framework Security Update January 2019

  Severity

  Critical 4

  Qualys ID

  91494

  Vendor Reference

  4480051, 4480054, 4480055, 4480056, 4480057, 4480058, 4480059, 4480061, 4480062, 4480063, 4480064, 4480070, 4480071, 4480072, 4480074, 4480075, 4480076, 4480083, 4480084, 4480085, 4480086, 4480961, 4480962, 4480966, 4480973, 4480978

  CVE Reference

  CVE-2019-0545

  CVSS Scores

  Base 5 / Temporal 3.7

  Description

  An information disclosure vulnerability exists in .NET Framework which allows bypassing Cross-origin Resource Sharing (CORS) configurations.

  KB4480051,KB4480054,KB4480055,KB4480056,KB4480057,KB4480058,KB4480059,KB4480061,KB4480062,KB4480063,KB4480064,KB4480070,KB4480071,KB4480072,KB4480074,KB4480075,KB4480076,KB4480083,KB4480084,KB4480085,KB4480086,KB4480961,KB4480962,KB4480966,KB4480973,KB4480978 are covered in this QID. This security update is rated Important for supported versions of Microsoft .NET Framework.

  QID Detection Logic (Authenticated):
  This QID checks for the vulnerable file version of system.dll

  Consequence

  An attacker who successfully exploited the vulnerability can retrieve content, that is normally restricted, from a web application.

  Solution

  Customers are advised to refer to CVE-2019-0545 for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  4480051
  4480054
  4480055
  4480056
  4480057
  4480058
  4480059
  4480061
  4480062
  4480063
  4480070
  4480071
  4480072
  4480074
  4480075
  4480076
  4480083
  4480084
  4480085
  4480086
  4480961
  4480962
  4480966
  4480973
  4480978
  4480064

• Microsoft Windows Security Update January 2019

  Severity

  Critical 4

  Qualys ID

  91495

  Vendor Reference

  KB4480116, KB4480957, KB4480960, KB4480961, KB4480962, KB4480963, KB4480964, KB4480966, KB4480968, KB4480970, KB4480972, KB4480973, KB4480975, KB4480978

  CVE Reference

  CVE-2019-0536, CVE-2019-0543, CVE-2019-0547, CVE-2019-0549, CVE-2019-0550, CVE-2019-0551, CVE-2019-0552, CVE-2019-0553, CVE-2019-0554, CVE-2019-0555, CVE-2019-0569, CVE-2019-0570, CVE-2019-0571, CVE-2019-0572, CVE-2019-0573, CVE-2019-0574, CVE-2019-0575, CVE-2019-0576, CVE-2019-0577, CVE-2019-0578, CVE-2019-0579, CVE-2019-0580, CVE-2019-0581, CVE-2019-0582, CVE-2019-0583, CVE-2019-0584

  CVSS Scores

  Base 9.3 / Temporal 7.7

  Description

  An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. (CVE-2019-0536, CVE-2019-0549, CVE-2019-0554, CVE-2019-0569)
  An elevation of privilege vulnerability exists when Windows improperly handles authentication requests. (CVE-2019-0543)
  A memory corruption vulnerability exists in the Windows DHCP client when an attacker sends specially crafted DHCP responses to a client. (CVE-2019-0547)
  A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system. (CVE-2019-0550, CVE-2019-0551)
  An elevation of privilege exists in Windows COM Desktop Broker. (CVE-2019-0552)
  An information disclosure vulnerability exists when Windows Subsystem for Linux improperly handles objects in memory. (CVE-2019-0553)
  An elevation of privilege vulnerability exists in the Microsoft XmlDocument class that could allow an attacker to escape from the AppContainer sandbox in the browser. (CVE-2019-0555)
  An elevation of privilege vulnerability exists when the Windows Runtime improperly handles objects in memory. (CVE-2019-0570)
  An elevation of privilege vulnerability exists when the Windows Data Sharing Service improperly handles file operations. (CVE-2019-0571, CVE-2019-0572, CVE-2019-0573, CVE-2019-0574)
  A remote code execution vulnerability exists when the Windows Jet Database Engine improperly handles objects in memory. (CVE-2019-0575, CVE-2019-0576, CVE-2019-0577, CVE-2019-0578, CVE-2019-0579, CVE-2019-0580, CVE-2019-0581, CVE-2019-0582, CVE-2019-0583, CVE-2019-0584)

  QID Detection Logic (Authenticated):
  Operating Systems: Windows Server 2008, Windows Server 2008 R2, Windows 7, Windows 8.1, Windows RT 8.1, Windows10, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019
  This QID checks for following file versions %windir%\System32\ntoskrnl.exe:
  The patch version of 6.0.6002.24555 (KB4480968 or KB4480957)
  The patch version of 6.1.7601.24335 (KB4480970 or KB4480960)
  The patch version of 6.2.9200.22638 (KB4480975 or KB4480972)
  The patch version of 6.3.9600.19228 (KB4480963 or KB4480964)
  The patch version of 10.0.10240.18094 (KB4480962)
  The patch version of 10.0.14393.2724 (KB4480961)
  The patch version of 10.0.15063.1563 (KB4480973)
  The patch version of 10.0.16299.904 (KB4480978)
  The patch version of 10.0.17134.523 (KB4480966)
  The patch version of 10.0.17763.253 (KB4480116)
  

  Consequence

  Successful exploitation allows an attacker to execute arbitrary code and take control of an affected system.

  Solution

  Customers are advised to 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 Security Guidance Windows

• Microsoft Windows 10 (1703) Servicing Stack Security Update January 2019 (KB4486458)

  Severity

  Serious 3

  Qualys ID

  91496

  Vendor Reference

  KB4486458

  CVE Reference

  N/A

  CVSS Scores

  Base 4.6 / Temporal 3.4

  Description

  Microsoft has released Servicing Stack security updates for Windows 10 (Version 1703).

  The update makes quality improvements to the servicing stack, which is the component that installs Windows updates.

  QID Detection Logic (Authenticated):
  Operating Systems: Windows 10 version 1703
  This QID checks for following file versions %windir%\WinSxS\*microsoft-windows-servicingstack*\CbsCore.dll:
  The patch version of 10.0.15063.1563 (KB4486458)
  

  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:
  KB4486458

• Microsoft Visual Studio Security Update for January 2019

  Severity

  Critical 4

  Qualys ID

  91497

  Vendor Reference

  CVE-2019-0537, CVE-2019-0546

  CVE Reference

  CVE-2019-0537, CVE-2019-0546

  CVSS Scores

  Base 9.3 / Temporal 6.9

  Description

  Microsoft Visual Studio contains the following vulnerabilities:
  CVE-2019-0537: An information disclosure vulnerability exists when Visual Studio improperly discloses arbitrary file contents if the victim opens a malicious .vscontent file.
  CVE-2019-0546: A remote code execution vulnerability exists in Visual Studio when the C++ compiler improperly handles specific combinations of C++ constructs.

  KB Articles associated with this update are: KB4476698, KB4476755

  Affected Software:
  Microsoft Visual Studio 2010 Service Pack 1
  Microsoft Visual Studio 2012 Update 5
  Microsoft Visual Studio 2017 version 15.9

  QID Detection Logic:
  This QID detects vulnerable versions of Microsoft Visual Studio by reviewing the file version of devenv.exe on all instances of Visual Studio.

  Consequence

  Successful exploitation allows an attacker to take advantage of the information disclosure vulnerability and view arbitrary file contents from the computer where the victim launched Visual Studio. Additionally, the remote code execution vulnerability could allow the attacker to run arbitrary code in the context of the current user.

  Solution

  Customers are advised to refer to CVE-2019-0537 and CVE-2019-0546 for more information pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2019-0537
  CVE-2019-0546

• Microsoft ASP.NET Core Denial Of Service Vulnerability January 2019

  Severity

  Serious 3

  Qualys ID

  91498

  Vendor Reference

  CVE-2019-0548

  CVE Reference

  CVE-2019-0548

  CVSS Scores

  Base 5 / Temporal 3.7

  Description

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

  A remote unauthenticated attacker can exploit this vulnerability by issuing specially crafted requests to the .NET Core application.

  QID Detection Logic (Authenticated):
  This QID checks for the vulnerable file version of aspnetcore.dll

  Consequence

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

  Solution

  Microsoft has released a patch ASP.NET Core 2.2.1

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  ASP.NET Core 2.1
  ASP.NET Core 2.2

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.