KLA20154
Multiple vulnerabilities in Microsoft Windows

Multiple vulnerabilities were found in Microsoft Windows. Malicious users can exploit these vulnerabilities to cause denial of service, gain privileges, obtain sensitive information, execute arbitrary code, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. A denial of service vulnerability in Windows Layer 2 Tunneling Protocol (L2TP) can be exploited remotely to cause denial of service.
2. An elevation of privilege vulnerability in Microsoft Cryptographic Services can be exploited remotely to gain privileges.
3. An information disclosure vulnerability in Windows Overlay Filter can be exploited remotely to obtain sensitive information.
4. A remote code execution vulnerability in Windows Layer 2 Tunneling Protocol (L2TP) can be exploited remotely to execute arbitrary code.
5. An elevation of privilege vulnerability in Windows GDI can be exploited remotely to gain privileges.
6. An information disclosure vulnerability in Windows Cryptographic can be exploited remotely to obtain sensitive information.
7. A remote code execution vulnerability in Windows Lightweight Directory Access Protocol (LDAP) can be exploited remotely to execute arbitrary code.
8. A denial of service vulnerability in Windows Internet Key Exchange (IKE) Extension can be exploited remotely to cause denial of service.
9. A security feature bypass vulnerability in BitLocker can be exploited remotely to bypass security restrictions.
10. A denial of service vulnerability in Windows iSCSI Service can be exploited remotely to cause denial of service.
11. An elevation of privilege vulnerability in Windows Kernel can be exploited remotely to gain privileges.
12. A denial of service vulnerability in Windows Netlogon can be exploited remotely to cause denial of service.
13. An elevation of privilege vulnerability in Windows NTLM can be exploited remotely to gain privileges.
14. A remote code execution vulnerability in Microsoft ODBC Driver can be exploited remotely to execute arbitrary code.
15. A remote code execution vulnerability in Windows Secure Socket Tunneling Protocol (SSTP) can be exploited remotely to execute arbitrary code.
16. An information disclosure vulnerability in Event Tracing for Windows can be exploited remotely to obtain sensitive information.
17. An elevation of privilege vulnerability in Microsoft DWM Core Library can be exploited remotely to gain privileges.
18. An elevation of privilege vulnerability in Windows SMB Witness Service can be exploited remotely to gain privileges.
19. A security feature bypass vulnerability in Windows Boot Manager can be exploited remotely to bypass security restrictions.
20. A denial of service vulnerability in Windows Lightweight Directory Access Protocol (LDAP) can be exploited remotely to cause denial of service.
21. A security feature bypass vulnerability in Windows Smart Card Resource Management Server can be exploited remotely to bypass security restrictions.
22. An elevation of privilege vulnerability in Windows Bluetooth Driver can be exploited remotely to gain privileges.
23. An elevation of privilege vulnerability in Windows Win32k can be exploited remotely to gain privileges.
24. An elevation of privilege vulnerability in Windows Error Reporting Service can be exploited remotely to gain privileges.
25. A remote code execution vulnerability in Microsoft WDAC OLE DB provider for SQL Server can be exploited remotely to execute arbitrary code.
26. An elevation of privilege vulnerability in Windows Local Session Manager (LSM) can be exploited remotely to gain privileges.
27. An elevation of privilege vulnerability in Windows Print Spooler can be exploited remotely to gain privileges.
28. A denial of service vulnerability in Remote Procedure Call Runtime can be exploited remotely to cause denial of service.
29. An elevation of privilege vulnerability in Windows Overlay Filter can be exploited remotely to gain privileges.
30. An elevation of privilege vulnerability in Windows Advanced Local Procedure Call (ALPC) can be exploited remotely to gain privileges.
31. An elevation of privilege vulnerability in Microsoft Message Queuing (MSMQ) can be exploited remotely to gain privileges.
32. An elevation of privilege vulnerability in Windows Backup Service can be exploited remotely to gain privileges.
33. An elevation of privilege vulnerability in Windows Installer can be exploited remotely to gain privileges.
34. An elevation of privilege vulnerability in Windows Bind Filter Driver can be exploited remotely to gain privileges.
35. An information disclosure vulnerability in Windows Kernel can be exploited remotely to obtain sensitive information.
36. An elevation of privilege vulnerability in Windows Credential Manager User Interface can be exploited remotely to gain privileges.
37. An elevation of privilege vulnerability in Windows Task Scheduler can be exploited remotely to gain privileges.
38. A remote code execution vulnerability in Windows Authentication can be exploited remotely to execute arbitrary code.
39. An elevation of privilege vulnerability in Windows Local Security Authority (LSA) can be exploited remotely to gain privileges.
40. An elevation of privilege vulnerability in Windows Ancillary Function Driver for WinSock can be exploited remotely to gain privileges.
41. A denial of service vulnerability in Internet Key Exchange (IKE) Protocol can be exploited remotely to cause denial of service.
42. An information disclosure vulnerability in Windows Point-to-Point Protocol (PPP) can be exploited remotely to obtain sensitive information.

The following public exploits exists for this vulnerability:

https://github.com/gmh5225/CVE-2023-21739

https://github.com/Wh04m1001/CVE-2023-21752

https://github.com/chompie1337/Windows_LPE_AFD_CVE-2023-21768

https://github.com/h1bAna/CVE-2023-21768

https://github.com/zoemurmure/CVE-2023-21768-AFD-for-WinSock-EoP-exploit

https://github.com/cl4ym0re/cve-2023-21768-compiled

https://github.com/CKevens/CVE-2023-21768-POC

https://github.com/HKxiaoli/Windows_AFD_LPE_CVE-2023-21768

https://github.com/SamuelTulach/nullmap

https://github.com/Malwareman007/CVE-2023-21768

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

Windows 8.1 for x64-based systems
Windows Server 2022 (Server Core installation)
Windows 10 Version 21H2 for x64-based Systems
Windows 10 for x64-based Systems
Windows 10 Version 1607 for x64-based Systems
Windows 11 version 21H2 for ARM64-based Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows 10 Version 20H2 for ARM64-based Systems
Windows Server 2012 (Server Core installation)
Windows Server 2012
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 for 32-bit Systems
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 22H2 for 32-bit Systems
Windows 10 Version 1809 for ARM64-based Systems
Windows 8.1 for 32-bit systems
Windows Server 2016 (Server Core installation)
Windows 11 Version 22H2 for x64-based Systems
Windows RT 8.1
Windows Server 2019
Windows 10 Version 22H2 for x64-based Systems
Windows 11 version 21H2 for x64-based Systems
Windows 10 Version 20H2 for x64-based Systems
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 22H2 for ARM64-based Systems
Windows Server 2012 R2 (Server Core installation)
Windows 10 Version 1809 for x64-based Systems
Windows Server 2016
Windows 10 Version 21H2 for 32-bit Systems
Windows Server 2022
Windows Server 2019 (Server Core installation)
Windows 11 Version 22H2 for ARM64-based Systems
Windows Server 2012 R2

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

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