CVE-2018-1002103 : Security Advisory and Response

Starting from Minikube versions 0.3.0-0.29.0, a vulnerability exists where an attacker can exploit DNS rebinding to access the Kubernetes Dashboard and potentially launch arbitrary code deployments.

Understanding CVE-2018-1002103

This CVE affects Minikube, a tool that enables users to run Kubernetes locally.

What is CVE-2018-1002103?

In Minikube versions 0.3.0-0.29.0, the Kubernetes Dashboard is exposed through the Minikube VM IP address and port 30000. This exposure can lead to potential security risks if the IP address is easily guessable.

The Impact of CVE-2018-1002103

The vulnerability allows attackers to indirectly access the Kubernetes Dashboard and potentially execute arbitrary code deployments. Additionally, if the minikube mount feature is enabled, attackers may gain direct access to the host filesystem.

Technical Details of CVE-2018-1002103

Minikube versions 0.3.0-0.29.0 are affected by this vulnerability.

Vulnerability Description

The vulnerability arises from the exposure of the Kubernetes Dashboard through the Minikube VM IP address and port 30000, making it accessible to attackers.

Affected Systems and Versions

Product: Minikube
Vendor: Kubernetes
Versions: v0.3.0, < v0.30.0

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: None

Mitigation and Prevention

To address CVE-2018-1002103, follow these steps:

Immediate Steps to Take

Update Minikube to a patched version.
Avoid exposing Minikube instances to untrusted networks.
Disable the Kubernetes Dashboard if not needed.

Long-Term Security Practices

Regularly update Minikube and Kubernetes components.
Implement network security measures to prevent unauthorized access.

Patching and Updates

Stay informed about security updates for Minikube and Kubernetes.