CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| coredns | coredns | affected |
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| Coredns.io | Coredns |
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| Source | ID | Title |
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Github GHSA |
GHSA-74w3-63xv-x9mv | CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.459% probability within 30 days)
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| First Time appeared |
Coredns.io
Coredns.io coredns |
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| Vendors & Products |
Coredns.io
Coredns.io coredns |
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| Metrics |
ssvc
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| Description | 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 service endpoint with no declared ports; plugin/kubernetes/object/endpoint.go creates Port: -1, plugin/k8s_external/msg_to_dns.go skips that service, plugin/k8s_external/transfer.go sends an empty []dns.RR batch, and plugin/transfer/transfer.go indexes records[0] without checking the batch is non-empty. This issue is fixed in version 1.14.5. | |
| Title | CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin | |
| Weaknesses | CWE-248 CWE-755 |
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| References |
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| Metrics |
cvssV3_1
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