A container with an RCE CVE has privileged access through PSP that can lead to a container escape

Description

A container escape is when an attacker can gain access to the node where the container is hosted. A remote code execution (RCE) vulnerability is a flaw in a package that allows for an attacker to execute arbitrary code. If a container has an RCE CVE and that container was granted privilege through a Pod Security Policy, then attackers can execute code to break out of a container and gain access to the host node.

Fix - Buildtime

Multiple Services

1. If available, patch the CVE by bumping the package.

2. Explicitly disable privilege access. This may cause breaks if a container was leverage privilege before.

apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
  name: <policy name>
spec:
+ privileged: false