KLA12198
Multiple vulnerabilities in Microsoft Products (ESU)

Multiple vulnerabilities were found in Microsoft Products (Extended Security Update). Malicious users can exploit these vulnerabilities to gain privileges, execute arbitrary code, cause denial of service, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. An elevation of privilege vulnerability in Windows NTFS can be exploited remotely to gain privileges.
2. An elevation of privilege vulnerability in Windows GPSVC can be exploited remotely to gain privileges.
3. A remote code execution vulnerability in Windows MSHTML Platform can be exploited remotely to execute arbitrary code.
4. An elevation of privilege vulnerability in Windows Common Log File System Driver can be exploited remotely to gain privileges.
5. An elevation of privilege vulnerability in Microsoft Enhanced Cryptographic Provider can be exploited remotely to gain privileges.
6. An elevation of privilege vulnerability in Windows Print Spooler can be exploited remotely to gain privileges.
7. An elevation of privilege vulnerability in Windows Filter Manager can be exploited remotely to gain privileges.
8. A denial of service vulnerability in Windows Remote Desktop Services can be exploited remotely to cause denial of service.
9. An elevation of privilege vulnerability in Windows NTLM can be exploited remotely to gain privileges.
10. A security feature bypass vulnerability in Windows HTML Platform can be exploited remotely to bypass security restrictions.
11. A security bypass vulnerability in Windows DCOM Server can be exploited remotely to bypass security restrictions.
12. A memory corruption vulnerability in Scripting Engine can be exploited remotely to execute arbitrary code.
13. A security feature bypass vulnerability in Kerberos AppContainer can be exploited remotely to bypass security restrictions.

The following public exploits exists for this vulnerability:

https://github.com/hzshang/CVE-2021-31956

https://github.com/r1skkam/PrintNightmare

https://github.com/zha0/Microsoft-CVE-2021-1675

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows 10 for x64-based Systems
Windows 10 Version 1809 for x64-based Systems
Windows 8.1 for 32-bit systems
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 20H2 for ARM64-based Systems
Windows 10 Version 1909 for ARM64-based Systems
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows Server, version 2004 (Server Core installation)
Windows 10 Version 1909 for 32-bit Systems
Windows 10 Version 2004 for x64-based Systems
Windows Server 2019 (Server Core installation)
Windows Server 2012 R2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows 10 Version 21H1 for 32-bit Systems
Windows 10 Version 1909 for x64-based Systems
Windows 10 Version 21H1 for ARM64-based Systems
Windows Server 2012
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows 10 Version 21H1 for x64-based Systems
Windows Server 2012 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows RT 8.1
Windows 7 for 32-bit Systems Service Pack 1
Windows 10 for 32-bit Systems
Windows Server 2019
Windows 10 Version 1607 for 32-bit Systems
Windows Server 2016
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 20H2 for x64-based Systems
Windows 10 Version 2004 for ARM64-based Systems
Windows 10 Version 2004 for 32-bit Systems
Windows Server 2012 R2
Windows Server 2016 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server, version 20H2 (Server Core Installation)
Windows 8.1 for x64-based systems

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)