CVE-2021-22729 : Exploit Details and Defense Strategies

A CWE-259 vulnerability has been identified in Schneider Electric's EVlink City, EVlink Parking, and EVlink Smart Wallbox charging stations, allowing attackers to gain unauthorized administrative privileges through a hard-coded password.

Understanding CVE-2021-22729

This CVE-2021-22729 involves a Use of Hard-coded Password vulnerability in Schneider Electric's EVlink charging stations, leading to potential unauthorized access.

What is CVE-2021-22729?

CVE-2021-22729 highlights a security flaw in EVlink City, EVlink Parking, and EVlink Smart Wallbox where attackers can exploit a hard-coded password to attain unauthorized administrative control.

The Impact of CVE-2021-22729

The vulnerability enables threat actors to manipulate the charging station's web server to escalate their privileges and potentially disrupt operations or compromise sensitive data.

Technical Details of CVE-2021-22729

This section delves into the specific technical aspects surrounding CVE-2021-22729.

Vulnerability Description

A CWE-259: Use of Hard-coded Password vulnerability in EVlink City, EVlink Parking, and EVlink Smart Wallbox allows unauthorized access to administrative controls through a predefined password.

Affected Systems and Versions

EVlink City (EVC1S22P4 / EVC1S7P4), EVlink Parking (EVW2 / EVF2 / EV.2), and EVlink Smart Wallbox (EVB1A) versions prior to R8 V3.4.0.1 are susceptible to this vulnerability.

Exploitation Mechanism

Attackers can exploit the hard-coded password vulnerability to gain unauthorized administrative privileges by manipulating the charging station's web server.

Mitigation and Prevention

Discover the best practices to mitigate and prevent the exploitation of CVE-2021-22729.

Immediate Steps to Take

Immediately apply security patches and updates provided by Schneider Electric to address the hard-coded password vulnerability in the affected charging stations.

Long-Term Security Practices

Incorporate robust password policies, network segmentation, and regular security assessments to enhance the overall security posture of EV charging infrastructure.

Patching and Updates

Ensure consistent monitoring of security bulletins from Schneider Electric for any further updates or patches related to CVE-2021-22729 to safeguard against potential security risks.