CVE-2021-20990 : What You Need to Know
Learn about CVE-2021-20990 impacting Fibaro Home Center devices. Unauthenticated access vulnerability allows unauthorized shutdown, reboot, and recovery mode triggering. Find mitigation steps here.
This article discusses CVE-2021-20990, a vulnerability found in Fibaro Home Center devices allowing unauthenticated access to trigger shutdown, reboot, and recovery mode.
Understanding CVE-2021-20990
This section provides detailed insights into the nature and impact of the vulnerability.
What is CVE-2021-20990?
CVE-2021-20990 affects Fibaro Home Center 2 and Lite devices with firmware version 4.600 and older. It enables unauthorized access to internal management services, allowing manipulation without authentication.
The Impact of CVE-2021-20990
The vulnerability poses a high risk with a CVSS base score of 7.5. Attackers can exploit this flaw over the network to disrupt device availability without the need for user interaction.
Technical Details of CVE-2021-20990
In this section, the technical aspects of the vulnerability are explored.
Vulnerability Description
An internal management service on port 8000 in affected Fibaro Home Center devices allows unauthenticated access to critical API endpoints, enabling unauthorized shutdown, reboot, or reboot into recovery mode.
Affected Systems and Versions
Fibaro Home Center 2 and Home Center Lite devices running firmware version 4.600 and older are impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability remotely over the network without the need for user privileges.
Mitigation and Prevention
This section outlines strategies to mitigate the risk associated with CVE-2021-20990.
Immediate Steps to Take
Users are advised to update their Fibaro Home Center devices to the latest firmware version provided by Fibar Group S.A. Also, restrict network access to the management services to trusted sources only.
Long-Term Security Practices
Implement strong network security measures, conduct regular security audits, and stay informed about security updates from the vendor.
Patching and Updates
Regularly check for security updates released by Fibar Group S.A. and apply patches promptly to address known vulnerabilities.