CVE-2021-34571 Explained : Impact and Mitigation

This CVE-2021-34571 article provides detailed insights into a vulnerability found in Enbra Wireless M-Bus devices due to hard-coded credentials. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2021-34571

CVE-2021-34571 highlights a security issue in Enbra Wireless M-Bus devices, allowing adversaries to exploit hard-coded credentials.

What is CVE-2021-34571?

Multiple Wireless M-Bus devices by Enbra are impacted by hard-coded credentials in Security mode 5, posing a significant security risk as the encryption key cannot be changed.

The Impact of CVE-2021-34571

The vulnerability enables adversaries to access all information available in Enbra EWM, leading to a high confidentiality impact and medium severity.

Technical Details of CVE-2021-34571

Discover more about the vulnerability technicalities affecting Enbra Wireless M-Bus devices.

Vulnerability Description

Enbra Wireless M-Bus devices suffer from hard-coded credentials in Security mode 5, allowing unauthorized access to sensitive information stored in Enbra EWM.

Affected Systems and Versions

The affected products include AT-WMBUS-16-2, ER-AM DN 15, and EWM 1.7.29 with specific versions and statuses.

Exploitation Mechanism

Adversaries can exploit the hard-coded credentials in Security mode 5 of Enbra Wireless M-Bus devices to compromise confidentiality.

Mitigation and Prevention

Explore the ways to mitigate and prevent the exploitation of CVE-2021-34571 in Enbra Wireless M-Bus devices.

Immediate Steps to Take

Users are advised to implement security best practices, conduct security assessments, and restrict unauthorized access to mitigate the risk.

Long-Term Security Practices

Regularly updating firmware, changing default passwords, and enforcing strong encryption practices can enhance the long-term security posture.

Patching and Updates

Enbra should release patches that address the hard-coded credentials issue, prompting users to apply updates promptly.