CVE-2021-28913 : Security Advisory and Response

This article provides detailed information about CVE-2021-28913, a vulnerability in BAB TECHNOLOGIE GmbH eibPort V3 prior version 3.9.1 that allows unauthenticated attackers to access sensitive information and potentially gain root SSH access.

Understanding CVE-2021-28913

This section delves into the specifics of the CVE-2021-28913 vulnerability.

What is CVE-2021-28913?

CVE-2021-28913 affects BAB TECHNOLOGIE GmbH eibPort V3 versions prior to 3.9.1, enabling unauthenticated attackers to access '/webif/SecurityModule' and validate the hardcoded unique 'eibPort String' acting as the root SSH key passphrase.

The Impact of CVE-2021-28913

The vulnerability can be exploited as part of an attack chain to potentially gain SSH root access, posing a significant security risk to affected systems.

Technical Details of CVE-2021-28913

In this section, we explore the technical aspects of CVE-2021-28913.

Vulnerability Description

The vulnerability allows unauthorized access to critical system information, potentially leading to unauthorized SSH root access.

Affected Systems and Versions

BAB TECHNOLOGIE GmbH eibPort V3 versions prior to 3.9.1 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by accessing '/webif/SecurityModule' to manipulate the 'eibPort String' and potentially gain root SSH access.

Mitigation and Prevention

This section provides guidance on addressing CVE-2021-28913 and enhancing system security.

Immediate Steps to Take

Update BAB TECHNOLOGIE GmbH eibPort V3 to version 3.9.1 or above to mitigate the vulnerability.
Implement strong authentication mechanisms to prevent unauthorized access.

Long-Term Security Practices

Establish regular security audits and monitoring to detect and respond to potential threats promptly.

Patching and Updates

Stay informed about security patches and updates for eibPort V3 to ensure ongoing protection against vulnerabilities.