CTFER Romeo Network Policy Misconfiguration Vulnerability Allows Namespace Pivoting

A vulnerability in CTFER Romeo prior to version 0.2.1 allows a malicious actor to pivot from the 'hardened' namespace to any Pod outside of it. This issue arises from a misconfigured NetworkPolicy, which disrupts the expected security defaults and could facilitate lateral movement within the deployment.

Impact

Exploitation of this vulnerability could lead to unauthorized access to Pods in other namespaces, bypassing intended security controls and allowing for potential lateral movement within the application.

Reproduction

The vulnerability can be reproduced by deploying CTFER Romeo versions prior to 0.2.1 with the 'hardened' namespace. The misconfigured NetworkPolicy will allow pivoting to Pods in other namespaces.

Remediation

To address this vulnerability, update to CTFER Romeo version 0.2.1 or later. If an immediate update is not possible, manually delete the 'inter-ns' NetworkPolicy in the affected namespace and update as soon as feasible.