PT-2023-26893 · Cilium · Cilium
Odinuge
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Publicado
2023-09-26
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Atualizado
2024-08-21
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CVE-2023-39347
CVSS v3.1
7.6
Alta
| Vetor | AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Cilium versions prior to 1.14.2
Cilium versions prior to 1.13.7
Cilium versions prior to 1.12.14
Description
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to update pod labels can cause Cilium to apply incorrect network policies. This issue arises due to the fact that on pod update, Cilium incorrectly uses user-provided pod labels to select the policies which apply to the workload in question. This can affect Cilium network policies that use the namespace, service account or cluster constructs to restrict traffic, Cilium clusterwide network policies that use Cilium namespace labels to select the Pod and Kubernetes network policies. Non-existent construct names can be provided, which bypass all network policies applicable to the construct. For example, providing a pod with a non-existent namespace as the value of the
io.kubernetes.pod.namespace label results in none of the namespaced CiliumNetworkPolicies applying to the pod in question. This attack requires the attacker to have Kubernetes API Server access, as described in the Cilium Threat Model.Recommendations
To resolve the issue, upgrade to Cilium version 1.14.2 or later.
To resolve the issue, upgrade to Cilium version 1.13.7 or later.
To resolve the issue, upgrade to Cilium version 1.12.14 or later.
As a temporary workaround, consider using an admission webhook to prevent pod label updates to the
k8s:io.kubernetes.pod.namespace and io.cilium.k8s.policy.* keys.Exploit
Correção
Insufficient Verification of Data Authenticity
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Identificadores relacionados
Produtos afetados
Cilium