Bypassing enforce mountable secrets policy imposed by the ServiceAccount admission plugin
Users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using ephemeral containers. The policy ensures pods running with a service account may only reference secrets specified in the service account’s secrets field. Kubernetes clusters are only affected if the ServiceAccount admission plugin and the `kubernetes.io/enforce-mountable-secrets` annotation are used together with ephemeral containers.
02 / AFFECTED SOFTWARE
Affected packages
197 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using ephemeral containers. The policy ensures pods running with a service account may only reference secrets specified in the service account’s secrets field. Kubernetes clusters are only affected if the ServiceAccount admission plugin and the `kubernetes.io/enforce-mountable-secrets` annotation are used together with ephemeral containers.
Kubernetes mountable secrets policy bypass in k8s.io/kubernetes
Users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using ephemeral containers. The policy ensures pods running with a service account may only reference secrets specified in the service account’s secrets field. Kubernetes clusters are only affected if the ServiceAccount admission plugin and the `kubernetes.io/enforce-mountable-secrets` annotation are used together with ephemeral containers.
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2023/07/06/3
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/2xxx/CVE-2023-2728.json
- https://github.com/kubernetes/kubernetes/issues/118640
- https://groups.google.com/g/kubernetes-security-announce/c/vPWYJ_L84m8
- https://nvd.nist.gov/vuln/detail/CVE-2023-2728
- https://security.netapp.com/advisory/ntap-20230803-0004/
- https://github.com/advisories/GHSA-cgcv-5272-97pr
- https://github.com/kubernetes/kubernetes/pull/118356
- https://github.com/kubernetes/kubernetes/pull/118471
- https://github.com/kubernetes/kubernetes/pull/118473
- https://github.com/kubernetes/kubernetes/pull/118474
- https://github.com/kubernetes/kubernetes/pull/118512
- https://github.com/kubernetes/kubernetes
- https://security.netapp.com/advisory/ntap-20230803-0004