CVE-2021-37379 : Exploit Details and Defense Strategies

A Cross Site Scripting (XSS) vulnerability in Teradek Sphere allows remote attackers to run arbitrary code. The product has reached End of Life, and no firmware updates will be provided.

Understanding CVE-2021-37379

This CVE involves a security flaw in Teradek Sphere firmware versions that enables attackers to execute unauthorized code remotely.

What is CVE-2021-37379?

CVE-2021-37379 is a Cross Site Scripting (XSS) vulnerability found in Teradek Sphere's System Information Settings, allowing hackers to exploit the Friendly Name field.

The Impact of CVE-2021-37379

The vulnerability enables remote attackers to execute arbitrary code, posing a severe risk to the confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2021-37379

The technical aspects of this CVE include an XSS exploit on Teradek Sphere firmware versions affecting the Friendly Name field.

Vulnerability Description

The XSS vulnerability in Teradek Sphere permits threat actors to inject and run arbitrary code through the Friendly Name field in System Information Settings.

Affected Systems and Versions

All firmware versions of Teradek Sphere are impacted by CVE-2021-37379.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by manipulating the Friendly Name field, leading to the execution of unauthorized code.

Mitigation and Prevention

To address CVE-2021-37379 and mitigate the associated risks, immediate actions and long-term security measures should be implemented.

Immediate Steps to Take

Disable remote access to the Teradek Sphere system until a patch is available.
Implement network segmentation to limit exposure to potential attacks.

Long-Term Security Practices

Regularly update and patch all software and firmware in the environment.
Conduct security assessments and audits to identify and address vulnerabilities proactively.

Patching and Updates

As Teradek Sphere has reached End of Life and will not receive any further firmware updates, it is crucial to consider alternative security measures and be vigilant against potential exploitation of this vulnerability.