Bug 2227129 (CVE-2023-3893)

Summary: CVE-2023-3893 kubernetes: Insufficient input sanitization on kubernetes CSI proxy leads to privilege escalation
Product: [Other] Security Response Reporter: Avinash Hanwate <ahanwate>
Component: vulnerabilityAssignee: Nobody <nobody>
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Priority: high    
Version: unspecifiedCC: dfreiber, jburrell, rogbas, security-response-team, vkumar
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Hardware: All   
OS: Linux   
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A vulnerability was found in Kubernetes. This flaw allows a user who can create pods on Windows nodes running kubernetes-csi-proxy to escalate to admin privileges on those nodes.
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Bug Blocks: 2227127    

Description Avinash Hanwate 2023-07-28 05:00:50 UTC
A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes running kubernetes-csi-proxy may be able to escalate 
to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes running kubernetes-csi-proxy. Any kubernetes environment with Windows nodes that are running kubernetes-csi-proxy is impacted. This is a common default configuration on Windows nodes. Run kubectl get nodes -l kubernetes.io/os=windows to see if any Windows nodes are in use.