Executive Summary

This vulnerability occurs because the affected devices use an insecure default configuration where the web interface communicates over HTTP instead of HTTPS. This means data is transmitted in cleartext, allowing an unauthenticated attacker on the same network to intercept and access sensitive information during transmission. [1]

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Impact Analysis

The vulnerability can lead to sensitive data being exposed to attackers on the same network, as they can intercept communications sent over HTTP. This compromises confidentiality and integrity of the data, potentially leading to unauthorized access or information leakage. However, it does not affect the electrical safety of the devices. [1]

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Compliance Impact

This vulnerability can negatively impact compliance with standards and regulations such as GDPR and HIPAA, which require protection of sensitive data during transmission. Using HTTP instead of HTTPS means data is not adequately protected, potentially leading to violations of data protection requirements. [1]

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Detection Guidance

This vulnerability can be detected by checking if the web interface of the affected Bender GmbH & Co.KG Charge Controller devices is accessible via HTTP instead of HTTPS. On your network, you can scan for devices responding on the default web interface ports (usually port 80) using tools like nmap. For example, you can run: nmap -p 80 --open <target-ip-range>. Additionally, you can use curl or a web browser to attempt to access the device's web interface via HTTP and verify if the connection is not encrypted. For example: curl -I http://<device-ip>. If the device responds over HTTP without redirecting to HTTPS, it is vulnerable. [1]

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Mitigation Strategies

The immediate mitigation step is to enable HTTPS in the device settings to secure the web interface communication. This will prevent sensitive data from being transmitted in cleartext and protect against interception by unauthenticated attackers on the same network. [1]

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