CVE-2025-58063— CoreDNS: DNS Cache Pinning via etcd Lease ID Confusion
Quick assessment
Affected
coredns coredns
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
CoreDNS是CoreDNS社区的一个 DNS 服务器。 CoreDNS 1.2.0至1.12.4之前版本存在安全漏洞，该漏洞源于etcd插件TTL混淆，可能导致DNS缓存固定攻击和拒绝服务。
Possible ATT&CK Techniques 2 AI
T1071 · Application Layer Protocol T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-58063
Vulnerability Information
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Vulnerability Title
CoreDNS: DNS Cache Pinning via etcd Lease ID Confusion
Source: CVE Program / CVE List V5
Vulnerability Description
CoreDNS is a DNS server that chains plugins. Starting in version 1.2.0 and prior to version 1.12.4, the CoreDNS etcd plugin contains a TTL confusion vulnerability where lease IDs are incorrectly used as TTL values, enabling DNS cache pinning attacks. This effectively creates a DoS condition for DNS resolution of affected services. The `TTL()` function in `plugin/etcd/etcd.go` incorrectly casts etcd lease IDs (64-bit integers) to uint32 and uses them as TTL values. Large lease IDs become very large TTLs when cast to uint32. This enables cache pinning attacks. Version 1.12.4 contains a fix for the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
数值类型间的不正确转换
Source: CVE Program / CVE List V5
Vulnerability Title
CoreDNS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CoreDNS是CoreDNS社区的一个 DNS 服务器。 CoreDNS 1.2.0至1.12.4之前版本存在安全漏洞，该漏洞源于etcd插件TTL混淆，可能导致DNS缓存固定攻击和拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-58063
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Qwen3.6-35B-A3B
· 8365 chars
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III. Intelligence Information for CVE-2025-58063
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IV. Related Vulnerabilities
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V. Comments for CVE-2025-58063
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