CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin
影響: go:github.com/coredns/coredns >= 1.9.4, <= 1.14.4 → 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 service endpoint with no declared ports. The built-in k8s_external transferer can emit an empty []dns.RR batch, and the shared transfer plugin indexes records[0] without checking that the batch is non-empty. In normal CoreDNS mode the panic is recovered and returned as SERVFAIL, but repeated tr…
| CVE | CVE-2026-62994 |
|---|---|
| 정보원 | GitHub Advisory Database |
| 수집 시각 | 2026. 10. 22. 오전 01:17 |
| 데이터 | Markdown JSON |
2026. 10. 17. 오전 04:26, GitHub Advisory Database에서 "CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin"을(를) 게시했습니다 (유형: 취약점 권고). 심각도는 "낮음"(low)입니다. 관련 기술: Go, GitHub, Kubernetes. CVE: CVE-2026-62994.