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PRIOn knowledge basePRION:CVE-2018-14644

HistoryNov 09, 2018 - 7:29 p.m.

Design/Logic Flaw

2018-11-0919:29:00

PRIOn knowledge base

www.prio-n.com

5.8 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

65.0%

JSON

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.

CPENameOperatorVersion
recursorge4.0.0
recursorle4.1.4

CPE	Name	Operator	Version
	recursor	ge	4.0.0
	recursor	le	4.1.4

References

bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644

docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.html