Description:

Microsoft has released a clarification to address several vulnerabilities in the following products:

• Windows Server 2012 R2 (Server Core installation)
• Windows Server 2012 R2
• Windows Server 2012 (Server Core installation)
• Windows Server 2012
• Windows Server 2016 (Server Core installation)
• Windows Server 2016
• Windows Server, version 1903 (Server Core installation)
• Windows Server, version 1909 (Server Core installation)
• Windows Server 2019 (Server Core installation)
• Windows Server 2019
• Windows Server, version 2004 (Server Core installation)
• Windows RT 8.1
• Windows 8.1 for x64-based systems
• Windows 8.1 for 32-bit systems
• Windows 10 Version 1607 for x64-based Systems
• Windows 10 Version 1607 for 32-bit Systems
• Windows 10 for x64-based Systems
• Windows 10 for 32-bit Systems
• Windows 10 Version 1903 for ARM64-based Systems
• Windows 10 Version 1903 for x64-based Systems
• Windows 10 Version 1903 for 32-bit Systems
• Windows 10 Version 1709 for ARM64-based Systems
• Windows 10 Version 1709 for x64-based Systems
• Windows 10 Version 1709 for 32-bit Systems
• Windows 10 Version 1909 for ARM64-based Systems
• Windows 10 Version 1909 for x64-based Systems
• Windows 10 Version 1909 for 32-bit Systems
• Windows 10 Version 1809 for ARM64-based Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows 10 Version 1809 for 32-bit Systems
• Windows 10 Version 1803 for ARM64-based Systems
• Windows 10 Version 1803 for x64-based Systems
• Windows 10 Version 1803 for 32-bit Systems
• Windows 10 Version 2004 for x64-based Systems
• Windows 10 Version 2004 for ARM64-based Systems
• Windows 10 Version 2004 for 32-bit Systems

Threats:

Attacker could exploit these vulnerabilities and do the following:

• Bypass of a protection mechanism

Best practice and Recommendations:

The CERT team encourages users to review Microsoft security advisory to mitigate the issue:

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011