CVE-2023-21690 : What You Need to Know

This CVE record pertains to the Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability.

Understanding CVE-2023-21690

This vulnerability allows remote code execution in Microsoft systems that utilize the Protected Extensible Authentication Protocol (PEAP).

What is CVE-2023-21690?

CVE-2023-21690 is a critical vulnerability that exposes Microsoft systems to remote code execution, potentially leading to unauthorized access, data breaches, and system compromise.

The Impact of CVE-2023-21690

With a CVSS base severity score of 9.8 (Critical), this vulnerability poses a significant risk to affected systems, allowing attackers to execute malicious code remotely, compromising system integrity and confidentiality.

Technical Details of CVE-2023-21690

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in the Microsoft Protected Extensible Authentication Protocol (PEAP) allows threat actors to execute code remotely on affected systems.

Affected Systems and Versions

The following Microsoft products are impacted by CVE-2023-21690:

Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows 10 Version 20H2
Windows 11 version 21H2
Windows 10 Version 21H2
Windows 11 version 22H2
Windows 10 Version 22H2
Windows 10 Version 1507
Windows 10 Version 1607
Windows Server 2016
Windows Server 2016 (Server Core installation)
Windows Server 2008 R2 Service Pack 1
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)

Exploitation Mechanism

The vulnerability can be exploited remotely, allowing threat actors to execute arbitrary code on vulnerable Microsoft systems.

Mitigation and Prevention

Protecting systems from CVE-2023-21690 requires immediate action and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Microsoft promptly.
Implement network segmentation to limit exposure.
Monitor network traffic for signs of exploitation.

Long-Term Security Practices

Regularly update and patch systems to address security vulnerabilities.
Employ strong access controls and authentication mechanisms.
Conduct regular security assessments and penetration testing.

Patching and Updates

Stay informed about security updates from Microsoft and ensure all systems are promptly patched to mitigate the risk posed by CVE-2023-21690.