CVE-2021-34602 : Vulnerability Insights and Analysis
Discover the impact of CVE-2021-34602 on Bender/ebee Charge Controllers. Learn about the vulnerability, affected versions, exploitation risks, and mitigation steps.
Bender Charge Controller: Long URL could lead to webserver crash
Understanding CVE-2021-20657
Bender/ebee Charge Controllers in multiple versions are vulnerable to Command Injection via the Web interface, allowing an authenticated attacker to execute shell commands with root privileges.
What is CVE-2021-20657?
The CVE-2021-20657 vulnerability specifically affects Bender/ebee Charge Controllers, enabling an attacker to input shell commands through certain fields on the Web interface.
The Impact of CVE-2021-20657
This vulnerability has a CVSS base score of 8.8, indicating a high impact on confidentiality, integrity, and availability. An attacker with low privileges can exploit this issue remotely without user interaction.
Technical Details of CVE-2021-20657
In-depth technical details of the CVE-2021-20657 vulnerability are as follows:
Vulnerability Description
The vulnerability allows an authenticated attacker to inject malicious shell commands through specific input fields.
Affected Systems and Versions
The affected products include CC612, CC613, ICC15xx, and ICC16xx with versions less than 5.11.2, 5.12.5, 5.13.2, and 5.20.2.
Exploitation Mechanism
Exploiting this vulnerability involves an attacker entering malicious commands into vulnerable input fields, leading to the execution of commands with elevated privileges.
Mitigation and Prevention
Effective mitigation strategies for CVE-2021-20657 are crucial to prevent potential exploitation:
Immediate Steps to Take
- Update affected Bender/ebee Charge Controllers to versions higher than 5.20.2.
- Restrict access to the Web interface to authorized personnel only.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing to identify and remediate vulnerabilities.
- Provide security awareness training to employees to recognize and report suspicious activities.
Patching and Updates
Ensure timely application of security patches and updates provided by Bender/ebee to address known vulnerabilities.