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CVE-2025-58063

CoreDNS: DNS Cache Pinning via etcd Lease ID Confusion

Published: Sep 9, 2025Updated: Sep 11, 2025 Sources: CVE List NVD GHSA BDUCWE-681
NVD MITRE
7.1CVSSHIGH
EPSS Score
0.4%
Top 67.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:LA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-681

Affected Products

РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
corednsСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
Платформа контейнеризации «Боцман»ООО «РусБИТех-Астра»
On-prem
Operating Systems / linux-distro
corednscoredns
On-prem
Networking Infrastructure / dns-dhcp-ntp
github.com/coredns/corednsGoOSS Libraries
ооо «ред софт»commercialRUOperating Systemsaka red soft
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
corednsoss-projectNetworking Infrastructure
gopackage-ecosystemOSS Libraries

Exploitability

Official Patch Available

References

https://github.com/coredns/coredns/commit/e1768a5d272e9da649dfb8588595e5c6e4e640bf
github.com
https://github.com/coredns/coredns/security/advisories/GHSA-93mf-426m-g6x9
github.com
https://github.com/coredns/coredns/security/advisories/GHSA-93mf-426m-g6x9
github.com
and 4 more references View all →

Timeline

Published
Sep 9, 2025
Last Updated
Sep 11, 2025

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