CVE-2021-41347 : Vulnerability Insights and Analysis
Learn about CVE-2021-41347 affecting Microsoft Windows, with a high severity rating of 7.8. Discover impacted systems, exploitation risk, and mitigation steps.
Windows AppX Deployment Service Elevation of Privilege Vulnerability identified on October 12, 2021, impacting various Microsoft Windows versions.
Understanding CVE-2021-41347
What is CVE-2021-41347?
The Windows AppX Deployment Service Elevation of Privilege Vulnerability allows attackers to elevate privileges on the affected systems, potentially leading to unauthorized actions.
The Impact of CVE-2021-41347
This vulnerability has a base severity rating of HIGH (CVSS score: 7.8) and can result in unauthorized privilege elevation, compromising the system's integrity, confidentiality, and availability.
Technical Details of CVE-2021-41347
Vulnerability Description
The vulnerability enables threat actors to exploit the AppX Deployment Service in Windows OS, escalating their privileges to perform unauthorized actions.
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 1507, Windows 10 Version 1607, Windows Server 2016, and Windows Server 2016 (Server Core installation).
- Affected versions are less than or equal to specific build numbers.
Exploitation Mechanism
Attackers can exploit this vulnerability by executing malicious applications that interact with the AppX Deployment Service, allowing them to gain elevated privileges.
Mitigation and Prevention
Immediate Steps to Take
- Apply security updates provided by Microsoft to address the vulnerability.
- Monitor for any unauthorized system behavior indicative of exploitation.
Long-Term Security Practices
- Regularly update and patch the operating system to prevent vulnerabilities.
- Implement the principle of least privilege to limit potential damage from privilege escalation.
- Conduct regular security assessments to identify and remediate system weaknesses.
Patching and Updates
Microsoft has released security updates to mitigate CVE-2021-41347. Ensure timely application of these patches to secure the affected systems.