CVE-2018-14644

Name: CVE-2018-14644
Creator: NVD / NIST
Published: 2018-11-09T19:29:00.253+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.84%

Last modified Jun 17, 2026

CVE-2018-14644 is a vulnerability of currently unknown severity. An issue has been found in PowerDNS Recursor from 4.0.0 up to and including 4.1.4. A remote attacker sending a DNS query for a meta-type like OPT can lead to a zone being wrongly cached as failing DNSSEC validation. EPSS estimates a 4.84% chance of exploitation in the next 30 days.

Description

An issue has been found in PowerDNS Recursor from 4.0.0 up to and including 4.1.4. A remote attacker sending a DNS query for a meta-type like OPT can lead to a zone being wrongly cached as failing DNSSEC validation. It only arises if the parent zone is signed, and all the authoritative servers for that parent zone answer with FORMERR to a query for at least one of the meta-types. As a result, subsequent queries from clients requesting DNSSEC validation will be answered with a ServFail.

Metrics

EPSS Probability

4.84%

90.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Powerdns	Recursor	>= 4.0.0, <= 4.1.4

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644Issue Tracking, Third Party Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.htmlVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644Issue Tracking, Third Party Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.htmlVendor Advisory

Timeline

Published: Nov 9, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-14644?

How severe is CVE-2018-14644?

Severity scoring for CVE-2018-14644 is pending analysis. The EPSS model estimates a 4.84% probability of exploitation in the next 30 days.

How do I fix CVE-2018-14644?

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-2018-14644?

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

Scan your code now

Source: NVD / NIST