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Date: January 22, 2021

A flaw was found in the Windows kube-proxy component in Kubernetes before 1.18.18, 1.19.10, 1.20.6, 1.21.0. In a cloud environment that does not set the “.status.loadBalancer.ingress.ip” field in the LoadBalancer service status configuration (for example in AWS) the packets can be misrouted and reach an unintended destination.

Language: Go

Severity Score

Severity Score

Top Fix


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Upgrade to version kubernetes - 1.18.18, 1.19.10, 1.20.6, 1.21.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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