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Low 3.7
CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin
CoreDNS is a DNS server written in Go. From 1.9.4 until 1.14.5, a network DNS client allowed to request AXFR for a CoreDNS zone can trigger a panic when CoreDNS is configured with k8s_external headless-service zone transfers and Kubernetes contains a headless…