CVE-2021-21904 : Exploit Details and Defense Strategies

A directory traversal vulnerability exists in the CMA CLI setenv command of Garrett Metal Detectors’ iC Module CMA Version 5.0, allowing an attacker to trigger this vulnerability through malicious input.

Understanding CVE-2021-21904

This CVE identifies a critical directory traversal vulnerability affecting Garrett Metal Detectors’ iC Module CMA Version 5.0.

What is CVE-2021-21904?

CVE-2021-21904 refers to a directory traversal vulnerability in Garrett Metal Detectors' iC Module CMA Version 5.0, wherein an attacker can exploit the CMA CLI setenv command with malicious input.

The Impact of CVE-2021-21904

With a CVSS base score of 9.1 (Critical), this vulnerability poses a high risk to confidentiality, integrity, and availability. An attacker with high privileges can exploit it remotely without user interaction which could lead to severe consequences.

Technical Details of CVE-2021-21904

This section provides a detailed look at the technical aspects of CVE-2021-21904.

Vulnerability Description

The vulnerability occurs due to improper limitation of a pathname to a restricted directory, allowing an attacker to navigate to unauthorized locations.

Affected Systems and Versions

Garrett Metal Detectors iC Module CMA Version 5.0 is affected by this vulnerability.

Exploitation Mechanism

An attacker can provide malicious input through the CMA CLI setenv command to trigger the directory traversal vulnerability.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-21904, users and organizations should implement the following measures.

Immediate Steps to Take

Update to a patched version or apply security fixes provided by the vendor.
Restrict network access to vulnerable systems.

Long-Term Security Practices

Regularly monitor and audit system activity for any suspicious behavior.
Implement the principle of least privilege to restrict access levels.

Patching and Updates

Stay informed about security updates and patches released by Garrett Metal Detectors for iC Module CMA Version 5.0.