CVE-2021-30066 Explained : Impact and Mitigation
Learn about CVE-2021-30066, a security vulnerability in Schneider Electric ConneXium Tofino Firewall and Belden Tofino Xenon Security Appliance. Find out the impact, affected systems, and mitigation measures.
This article provides detailed information about CVE-2021-30066, a security vulnerability found in Schneider Electric ConneXium Tofino Firewall and Belden Tofino Xenon Security Appliance.
Understanding CVE-2021-30066
CVE-2021-30066 is related to the loading of arbitrary firmware images due to a vulnerability in firmware signature verification on specific devices.
What is CVE-2021-30066?
The vulnerability exists in Schneider Electric ConneXium Tofino Firewall TCSEFEA23F3F22 before version 03.23, TCSEFEA23F3F20/21, and Belden Tofino Xenon Security Appliance. It allows an attacker to load malicious firmware images by bypassing firmware signature verification using a USB stick, which was not adequately fixed from CVE-2017-11400.
The Impact of CVE-2021-30066
The impact of this vulnerability could lead to unauthorized firmware modifications, device compromise, and potential security breaches on affected devices.
Technical Details of CVE-2021-30066
This section outlines specific technical details of the CVE.
Vulnerability Description
The vulnerability allows for the loading of arbitrary firmware images due to incomplete firmware signature verification on certain Schneider Electric and Belden devices.
Affected Systems and Versions
Schneider Electric ConneXium Tofino Firewall TCSEFEA23F3F22 before 03.23, TCSEFEA23F3F20/21, and Belden Tofino Xenon Security Appliance are affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by bypassing firmware signature verification using a USB stick, enabling the loading of malicious firmware images.
Mitigation and Prevention
To address CVE-2021-30066, it is crucial to take immediate and long-term security measures.
Immediate Steps to Take
Disable USB port access, apply vendor-recommended security patches, and restrict physical access to vulnerable devices.
Long-Term Security Practices
Regularly update firmware, implement network segmentation, conduct security assessments, and monitor for unauthorized activities.
Patching and Updates
Stay informed about security advisories from Schneider Electric and Belden, and promptly apply patches or firmware updates to mitigate the vulnerability.