CVE-2021-42282 : Vulnerability Insights and Analysis
Learn about CVE-2021-42282, a high-severity vulnerability in Microsoft Windows Server that allows privilege escalation. Find mitigation steps and how to prevent exploitation.
Active Directory Domain Services Elevation of Privilege Vulnerability identified on November 9, 2021.
Understanding CVE-2021-42282
What is CVE-2021-42282?
CVE-2021-42282 is a high-severity vulnerability affecting Microsoft Windows Server versions that allows attackers to elevate privileges.
The Impact of CVE-2021-42282
This vulnerability can lead to unauthorized access to critical system functions and potentially compromise the entire system.
Technical Details of CVE-2021-42282
Vulnerability Description
The vulnerability in Active Directory Domain Services allows attackers to escalate privileges on affected systems.
Affected Systems and Versions
- Windows Server 2019
- Windows Server 2022
- Windows Server versions 2004, 20H2, 2016, 2012, 2012 R2
- Windows Server 2008 (various editions)
Exploitation Mechanism
Attackers can exploit this vulnerability through crafted requests to the Active Directory service, gaining elevated privileges.
Mitigation and Prevention
Immediate Steps to Take
- Apply the security patch provided by Microsoft immediately.
- Monitor system logs for any unauthorized access attempts.
- Limit user privileges and access to critical system functions.
Long-Term Security Practices
- Regularly update and patch all systems and software.
- Conduct security audits and vulnerability assessments regularly.
- Implement least privilege principles for user access.
- Educate users on the importance of cybersecurity practices.
- Use network segmentation to limit the impact of potential breaches.
Patching and Updates
Ensure that all affected systems are updated with the latest security patches to mitigate the risk of exploitation.