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Kubernetes: CVE-2021-25736: Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port

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Kubernetes: CVE-2021-25736: Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
10/30/2023
Created
11/25/2023
Added
11/24/2023
Modified
11/24/2023

Description

Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port (“spec.ports[*].port”) as a LoadBalancer Service when the LoadBalancer controller does not set the “status.loadBalancer.ingress[].ip” field. Clusters where the LoadBalancer controller sets the “status.loadBalancer.ingress[].ip” field are unaffected.

Solution(s)

  • kubernetes-upgrade-1_18_19
  • kubernetes-upgrade-1_19_10
  • kubernetes-upgrade-1_20_6

References

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