CVE-2021-37386 Explained : Impact and Mitigation

Furukawa Electric LatAm 423-41W/AC before v1.1.4 and LD421-21W before v1.3.3 were discovered to contain an HTML injection vulnerability via the serial number update function.

Understanding CVE-2021-37386

This CVE identifies an HTML injection vulnerability found in Furukawa Electric LatAm products.

What is CVE-2021-37386?

CVE-2021-37386 highlights a security flaw in Furukawa Electric LatAm 423-41W/AC and LD421-21W devices, allowing malicious entities to inject HTML via the serial number update feature.

The Impact of CVE-2021-37386

This vulnerability could lead to unauthorized information disclosure, data manipulation, or further exploitation of affected systems by attackers.

Technical Details of CVE-2021-37386

The following technical aspects provide insights into the vulnerability:

Vulnerability Description

The vulnerability allows HTML injection through the serial number update function of affected Furukawa Electric LatAm devices.

Affected Systems and Versions

Furukawa Electric LatAm 423-41W/AC versions before v1.1.4 and LD421-21W versions before v1.3.3 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious HTML code through the serial number update functionality of the affected devices.

Mitigation and Prevention

To address CVE-2021-37386, consider the following mitigation strategies:

Immediate Steps to Take

Disable the serial number update functionality on affected devices.
Implement input validation mechanisms to prevent HTML injection attacks.

Long-Term Security Practices

Regularly update firmware to patches that address known vulnerabilities.
Conduct security trainings for staff to enhance awareness of potential security risks.

Patching and Updates

Ensure you update Furukawa Electric LatAm 423-41W/AC to v1.1.4 and LD421-21W to v1.3.3 or later to mitigate the HTML injection vulnerability.