漏洞信息
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Vulnerability Title
CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin
Vulnerability 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.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Vulnerability Type
未捕获的异常
Vulnerability Title
CoreDNS 异常处理不当漏洞
Vulnerability Description
CoreDNS是CoreDNS团队开源的一个 DNS 服务器。 CoreDNS 1.9.4版本至1.14.5之前版本存在异常处理不当漏洞,该漏洞源于在配置k8s_external headless-service zone transfers且Kubernetes包含无声明端口的headless service endpoint时,未检查批次是否为空就索引记录,可能导致网络DNS客户端触发恐慌。
CVSS Information
N/A
Vulnerability Type
N/A