CVE-2023-22617

Name: CVE-2023-22617
Creator: NVD / NIST
Published: 2023-01-21T19:15:11.077+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 7.32%

Last modified Jun 17, 2026

CVE-2023-22617 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A remote attacker might be able to cause infinite recursion in PowerDNS Recursor 4.8.0 via a DNS query that retrieves DS records for a misconfigured domain, because QName minimization is used in QM fallback mode. This is fixed in 4.8.1.. EPSS estimates a 7.32% chance of exploitation in the next 30 days.

Description

A remote attacker might be able to cause infinite recursion in PowerDNS Recursor 4.8.0 via a DNS query that retrieves DS records for a misconfigured domain, because QName minimization is used in QM fallback mode. This is fixed in 4.8.1.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

7.32%

93.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Powerdns	Recursor	4.8.0

References

http://www.openwall.com/lists/oss-security/2023/01/20/1Mailing List, Release Notes, Third Party Advisory
https://docs.powerdns.com/recursor/changelog/4.8.html#change-4.8.1Release Notes, Vendor Advisory
https://docs.powerdns.com/recursor/security-advisories/Vendor Advisory
http://www.openwall.com/lists/oss-security/2023/01/20/1Mailing List, Release Notes, Third Party Advisory
https://docs.powerdns.com/recursor/changelog/4.8.html#change-4.8.1Release Notes, Vendor Advisory
https://docs.powerdns.com/recursor/security-advisories/Vendor Advisory

Timeline

Published: Jan 21, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-22617?

How severe is CVE-2023-22617?

CVE-2023-22617 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 7.32% probability of exploitation in the next 30 days.

How do I fix CVE-2023-22617?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-22617?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST