CVE-2021-34589 : Exploit Details and Defense Strategies

In Bender/ebee Charge Controllers in multiple versions, an RFID leak vulnerability exposes the RFID of the last charge event without authentication via the web interface.

Understanding CVE-2021-34589

This CVE involves Bender Charge Controllers with RFID leak vulnerabilities that can be exploited without authentication.

What is CVE-2021-34589?

Bender/ebee Charge Controllers in various versions are affected by an RFID leak, allowing unauthorized access to RFID information.

The Impact of CVE-2021-34589

The vulnerability poses a high severity risk with a CVSS base score of 7.5, leading to potential unauthorized access to confidential information.

Technical Details of CVE-2021-34589

The vulnerability is characterized by an accessible RFID leak in Bender Charge Controllers without the need for authentication.

Vulnerability Description

The RFID of the last charge event can be exploited via the web interface, affecting certain versions of Bender Charge Controllers.

Affected Systems and Versions

Products such as CC612, CC613, ICC15xx, ICC16xx by Bender/ebee are impacted, including versions 5.11.x, 5.12.x, 5.13.x, and 5.20.x.

Exploitation Mechanism

Attackers can exploit the RFID leak vulnerability through the web interface without the requirement for authentication, potentially compromising confidentiality.

Mitigation and Prevention

To address CVE-2021-34589, immediate steps and long-term security practices are essential.

Immediate Steps to Take

Organizations should restrict access to the affected web interfaces and implement access controls to prevent unauthorized RFID access.

Long-Term Security Practices

Regular security assessments, monitoring, and timely software updates are crucial to maintain a secure environment.

Patching and Updates

Vendors should release patches to fix the RFID leak vulnerability in affected versions of Bender Charge Controllers.