CVE-2020-5863 : Security Advisory and Response

NGINX Controller versions prior to 3.2.0 allow unauthenticated attackers to create unprivileged user accounts, posing a security risk.

Understanding CVE-2020-5863

In NGINX Controller versions before 3.2.0, a vulnerability exists that enables unauthorized users to create limited accounts.

What is CVE-2020-5863?

This CVE refers to a flaw in NGINX Controller versions pre-3.2.0, allowing unauthenticated attackers to generate restricted user accounts.

The Impact of CVE-2020-5863

The vulnerability permits unauthorized users to create accounts with limited permissions, potentially compromising system integrity.

Technical Details of CVE-2020-5863

NGINX Controller's security issue is detailed below.

Vulnerability Description

In versions before 3.2.0, attackers with network access to the Controller API can create user accounts limited to uploading licenses only.

Affected Systems and Versions

Product: NGINX Controller
Versions Affected: 3.0.0-3.1.0, 2.0.0-2.9.0, 1.0.1

Exploitation Mechanism

Unauthorized users exploit the Controller API to create unprivileged accounts, restricting access to system components.

Mitigation and Prevention

Protect your system from CVE-2020-5863 with the following measures.

Immediate Steps to Take

Update NGINX Controller to version 3.2.0 or newer to mitigate the vulnerability.
Restrict network access to the Controller API to authorized users only.

Long-Term Security Practices

Regularly monitor and audit user accounts and permissions within NGINX Controller.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

Stay informed about security updates and patches released by NGINX for Controller to address vulnerabilities.