SB2025090957 - DNS cache poisoning in CoreDNS
Published: September 9, 2025
Security Bulletin ID
SB2025090957
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use of insufficiently random values (CVE-ID: CVE-2025-58063)
The vulnerability allows a remote attacker to perform DNS cache poisoning attacks.
The vulnerability exists due to an error within the TTL() function in plugin/etcd/etcd.go, which casts the 64-bit etcd lease ID to a uint32 and uses it as the TTL, resulting in cache pinning for very long periods. A remote attacker can perform DNS cache poisoning attack.
Remediation
Install update from vendor's website.