CVE-2018-14644

MediumCVSS 5.9/10Last modified Jun 17, 2026

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

CVSS 3.0 5.9/10CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

VendorProductVersions
[UNKNOWN]pdns4.0.9; 4.1.5

References

Timeline

Published
Nov 9, 2018
Last modified
Jun 17, 2026
NVD status
Modified

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