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.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.html
Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644
Scores
CVSS v3
5.3
EPSS
0.0484
EPSS Percentile
90.9%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Details
CWE
CWE-20
Status
published
Products (1)
powerdns/recursor
4.0.0 - 4.1.4
Published
Nov 09, 2018
Tracked Since
Feb 18, 2026