CVE-2021-28912 : Vulnerability Insights and Analysis

This CVE involves a vulnerability in the BAB TECHNOLOGIE GmbH eibPort V3, where each device has a hardcoded and weak root SSH key passphrase, known as 'eibPort string'. This passphrase can be exploited as part of an attack chain to gain SSH root access.

Understanding CVE-2021-28912

This section will cover the details and impact of CVE-2021-28912.

What is CVE-2021-28912?

The vulnerability in BAB TECHNOLOGIE GmbH eibPort V3 allows attackers to leverage a unique weak root SSH key passphrase, 'eibPort string', to obtain SSH root access.

The Impact of CVE-2021-28912

The exploitation of this vulnerability can lead to unauthorized access to the affected devices, compromising their security and integrity.

Technical Details of CVE-2021-28912

Below are the specific technical details regarding this CVE.

Vulnerability Description

The vulnerability arises from the presence of a hardcoded and weak root SSH key passphrase in the BAB TECHNOLOGIE GmbH eibPort V3 devices.

Affected Systems and Versions

All devices using the eibPort V3 with the hardcoded 'eibPort string' passphrase are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit the weak root SSH key passphrase to initiate an attack chain that culminates in gaining unauthorized SSH root access.

Mitigation and Prevention

Here are the steps to mitigate and prevent potential exploits of CVE-2021-28912.

Immediate Steps to Take

Users should immediately change the root SSH key passphrase on affected devices to a strong and unique passphrase to eliminate the risk of unauthorized access.

Long-Term Security Practices

Implementing regular security audits and ensuring that devices have no hardcoded credentials are essential to enhance overall security posture.

Patching and Updates

It is crucial to monitor for any official patches or updates released by BAB TECHNOLOGIE GmbH to address this vulnerability and apply them promptly to secure the devices.