feat(container): update image docker.io/rancher/kubectl to v1.32.0

[renovate]

This PR contains the following updates:

Package	Update	Change
docker.io/rancher/kubectl	minor	v1.31.0 -> v1.32.0

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[jsaveker]

Here is an automated review from ChatGPT of this pull request.

In the provided git diff, there's a minor change related to the version of kubectl used within the SYSTEM_UPGRADE_JOB_KUBECTL_IMAGE environment variable, changing from v1.31.0 to v1.31.1. This change does not introduce any direct security issue based on the diff alone. However, there are some potential concerns around the settings that could merit attention:

Concerns Outside of the Direct Diff:

1. Image Pull Policy: The SYSTEM_UPGRADE_JOB_IMAGE_PULL_POLICY is set to IfNotPresent. This setting means that if an image is already present on the node, it won't pull a newer version of the same tag from the repository. This could potentially be a security concern if an updated image contains security patches that are not present in the already-pulled image.

2. Privileged Mode: The SYSTEM_UPGRADE_JOB_PRIVILEGED flag is set to true. Running containers in privileged mode can be risky as it grants the container access to all devices on the host as if it were running as PID 1. This can lead to potential security vulnerabilities if the container becomes compromised.

Suggested Fixes:

Regarding Image Pull Policy:

To ensure that the latest patched version of the image is always used, consider changing the image pull policy to Always. This forces Kubernetes to always pull the image before starting a container, reducing the risk of running outdated software:

SYSTEM_UPGRADE_JOB_IMAGE_PULL_POLICY: Always

Regarding Privileged Mode:

If the privileged mode is not strictly necessary for the operation of the system upgrade jobs, consider setting this to false to adhere to the principle of least privilege. If privileged mode is required for specific operations, assess whether those operations can be scoped down or managed through more granular security mechanisms such as Kubernetes Security Contexts, Pod Security Policies (or their replacements, since PSPs are being deprecated), or Open Policy Agent for fine-grained access control.

SYSTEM_UPGRADE_JOB_PRIVILEGED: false

Conclusion:

While the direct change in the git diff (updating the kubectl image version) itself does not introduce a discernible security issue, the highlighted concerns around image pull policy and privileged container use are important from a security standpoint and should be addressed to ensure that the deployment is adhering to best practices in security.