SB2025120857 - Two DoS vulnerabilities in PowerDNS Recursor

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2025-59030)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of incoming notifies over TCP. A remote attacker can send specially crafted requests to the DNS server and perform a denial of service (DoS) attack.

2) Resource management error (CVE-ID: CVE-2025-59029)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources in cache management when handling DNS queries with with qtype ANY. A remote attacker can send specially crafted request to the DNS server and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-08.html
• https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-07.html