CVE-2021-22723 : Security Advisory and Response
Discover the CVE-2021-22723 impact, affected systems, and mitigation steps for the Cross-Site Scripting vulnerability in Schneider Electric's EVlink products prior to R8 V3.4.0.1.
A Cross-Site Scripting (XSS) vulnerability was discovered in Schneider Electric's EVlink City, Parking, and Smart Wallbox products, allowing malicious actors to impersonate users and perform unauthorized actions.
Understanding CVE-2021-22723
This CVE involves a CWE-79 vulnerability in Schneider Electric's charging station products that could be exploited by attackers for CSRF attacks.
What is CVE-2021-22723?
The CVE-2021-22723 vulnerability is a result of improper neutralization of input during web page generation, specifically through Cross-Site Request Forgery (CSRF) attacks.
The Impact of CVE-2021-22723
The vulnerability could enable threat actors to impersonate charging station users, potentially leading to unauthorized actions being taken on behalf of the users.
Technical Details of CVE-2021-22723
This section delves into the specific technical aspects of the CVE.
Vulnerability Description
The vulnerability lies in the web page generation process of Schneider Electric's EVlink City, Parking, and Smart Wallbox products, allowing for XSS attacks through CSRF mechanisms.
Affected Systems and Versions
All versions of EVlink City (EVC1S22P4 / EVC1S7P4), EVlink Parking (EVW2 / EVF2 / EV.2), and EVlink Smart Wallbox (EVB1A) prior to R8 V3.4.0.1 are impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by submitting specially crafted malicious parameters to the charging station's web server, enabling them to carry out unauthorized actions.
Mitigation and Prevention
It is crucial to take immediate steps to secure systems and prevent potential exploitation of this CVE.
Immediate Steps to Take
Users of the affected Schneider Electric products should update to version R8 V3.4.0.1 or later to mitigate the CVE-2021-22723 vulnerability.
Long-Term Security Practices
Implementing secure coding practices and regular security assessments can help prevent similar vulnerabilities in the future.
Patching and Updates
Regularly applying security patches and updates provided by Schneider Electric is essential to ensure the protection of charging station infrastructure.