CVE-2018-14644

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory powerdns.com
Affected: [UNKNOWN] pdns
Published at:
Updated at:

References

Link Tags
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.html vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644 third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2018-14644?
CVE-2018-14644 has been scored as a medium severity vulnerability.
How to fix CVE-2018-14644?
To fix CVE-2018-14644, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-14644 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-14644 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-14644?
CVE-2018-14644 affects [UNKNOWN] pdns.
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