CVE-2021-45389 : Exploit Details and Defense Strategies

A flaw in the JWT token allows for privilege escalation in StarWind SAN, NAS, and Command Center.

Understanding CVE-2021-45389

What is CVE-2021-45389?

A vulnerability in the JWT token allows the injection of a self-signed token, enabling privilege escalation in the update manager of StarWind SAN, NAS build 1578, and StarWind Command Center build 6864.

The Impact of CVE-2021-45389

The vulnerability could bypass authentication processes, leading to potential privilege escalation.

Technical Details of CVE-2021-45389

Vulnerability Description

The flaw enables the injection of a self-signed JWT token into the update manager.

Affected Systems and Versions

StarWind SAN build 1578
StarWind NAS build 1578
StarWind Command Center build 6864

Exploitation Mechanism

The vulnerability allows an attacker to inject a self-signed JWT token, leading to privilege escalation.

Mitigation and Prevention

Immediate Steps to Take

Update StarWind SAN, NAS, and Command Center to non-vulnerable versions.
Implement strict input validation to mitigate token injection.

Long-Term Security Practices

Regularly update and patch all software components.
Conduct security audits to identify and address vulnerabilities.

Patching and Updates

Apply the latest security patches from StarWind to address this vulnerability.