CVE-2021-23856 Explained : Impact and Mitigation

A detailed overview of the CVE-2021-23856 vulnerability affecting IndraMotion MLC L20, L40 manufactured by Rexroth.

Understanding CVE-2021-23856

This CVE involves a reflected Cross-Site-Scripting (XSS) vulnerability in the web server, allowing attackers to execute scripts on a client's computer.

What is CVE-2021-23856?

The web server of IndraMotion MLC L20, L40 is vulnerable to reflected XSS. This enables attackers to manipulate URLs and execute malicious scripts on a client's computer.

The Impact of CVE-2021-23856

With a CVSS base score of 10 out of 10, this critical vulnerability has a high impact on confidentiality, integrity, and availability. No user interaction or privileges are required for exploitation.

Technical Details of CVE-2021-23856

This section provides deeper insights into the vulnerability.

Vulnerability Description

The vulnerability allows attackers to exploit reflected XSS by sending manipulated URLs to clients, leading to script execution on their computers.

Affected Systems and Versions

IndraMotion MLC L20 and L40 by Rexroth are affected by this vulnerability across all versions.

Exploitation Mechanism

Attackers can exploit the vulnerability by crafting malicious URLs that, when clicked by a client, execute unauthorized scripts on their systems.

Mitigation and Prevention

Learn how to protect your systems and networks from CVE-2021-23856.

Immediate Steps to Take

Immediately apply security patches provided by the vendor to mitigate the risk of exploitation. Consider implementing web application firewalls and input validation mechanisms to prevent XSS attacks.

Long-Term Security Practices

Regularly update and patch your software, conduct security assessments, and educate users about safe browsing practices to reduce the risk of XSS vulnerabilities.

Patching and Updates

Stay informed about security advisories from Rexroth and apply patches promptly to address known vulnerabilities.