CVE-2021-23019 : Exploit Details and Defense Strategies

NGINX Controller versions 2.0.0 through 2.9.0 and 3.x before 3.15.0 are affected by a vulnerability where the Administrator password may be exposed in the systemd.txt file included in the support package.

Understanding CVE-2021-23019

This CVE impacts NGINX Controller versions 2.0.0 through 2.9.0 and 3.x before 3.15.0.

What is CVE-2021-23019?

The vulnerability in NGINX Controller versions exposes the Administrator password in the systemd.txt file within the support package.

The Impact of CVE-2021-23019

The exposure of the Administrator password can lead to unauthorized access and compromise of the NGINX Controller.

Technical Details of CVE-2021-23019

The technical aspects of the CVE include:

Vulnerability Description

NGINX Controller versions 2.0.0 through 2.9.0 and 3.x before 3.15.0 are susceptible to the exposure of the Administrator password.

Affected Systems and Versions

The affected systems are those running NGINX Controller versions 2.0.0 through 2.9.0 and 3.x before 3.15.0.

Exploitation Mechanism

The vulnerability allows threat actors to access the systemd.txt file and retrieve the Administrator password.

Mitigation and Prevention

To address CVE-2021-23019, consider the following:

Immediate Steps to Take

Remove the systemd.txt file from the NGINX support package.
Change the Administrator password immediately.

Long-Term Security Practices

Regularly update NGINX Controller to the latest version.
Monitor system logs for any unusual activities.

Patching and Updates

Apply the latest patches and updates provided by NGINX to mitigate the vulnerability.