CVE-2021-43223 : Security Advisory and Response
Learn about the CVE-2021-43223 affecting multiple Microsoft Windows versions. Understand the impact, affected systems, exploitation, and mitigation steps.
A Windows Remote Access Connection Manager Elevation of Privilege Vulnerability affecting various Microsoft Windows versions.
Understanding CVE-2021-43223
What is CVE-2021-43223?
The CVE-2021-43223 is a vulnerability that allows an attacker to elevate privileges within the Windows Remote Access Connection Manager.
The Impact of CVE-2021-43223
This vulnerability has a high severity level with a CVSS base score of 7.8, posing risks of unauthorized privilege escalation and potential system compromise.
Technical Details of CVE-2021-43223
Vulnerability Description
The vulnerability resides in the Windows Remote Access Connection Manager, enabling attackers to exploit it for privilege escalation.
Affected Systems and Versions
- Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows 10 Version 21H1, Windows Server 2022, Windows 10 Version 2004, Windows Server version 2004, Windows 10 Version 20H2, Windows Server version 20H2, Windows 11 version 21H2, Windows 10 Version 21H2, Windows 10 Version 1507, Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows 7 Service Pack 1, Windows 8.1, Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, and Windows Server 2012 R2 (Server Core installation).
Exploitation Mechanism
The vulnerability can be exploited by an attacker locally to gain elevated privileges on the targeted Windows system.
Mitigation and Prevention
Immediate Steps to Take
- Apply the necessary security updates provided by Microsoft to address the vulnerability.
- Monitor for any unusual system behavior indicating potential exploitation.
Long-Term Security Practices
- Regularly install security patches and updates on all Windows systems to prevent future vulnerabilities.
Patching and Updates
Always keep your systems up to date with the latest security patches from Microsoft to mitigate risks associated with CVE-2021-43223.