CVE-2025-58063 (GCVE-0-2025-58063)
Vulnerability from cvelistv5
Published
2025-09-09 19:27
Modified
2025-09-10 14:26
Severity ?
7.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
CWE
  • CWE-681 - Incorrect Conversion between Numeric Types
Summary
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.
References
Impacted products
Vendor Product Version
coredns coredns Version: >= 1.2.0, < 1.12.4
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