CVE-2018-14663

Name: CVE-2018-14663
Creator: NVD / NIST
Published: 2018-11-26T23:29:00.813+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.48%

Last modified Jun 17, 2026

CVE-2018-14663 is a vulnerability of currently unknown severity. An issue has been found in PowerDNS DNSDist before 1.3.3 allowing a remote attacker to craft a DNS query with trailing data such that the addition of a record by dnsdist, for example an OPT record when adding EDNS Client Subnet, might result in the trailing data being smuggled to the backend as a valid record while not seen by dnsdist. This is an issue when dnsdist is deployed as a DNS Firewall and used to filter some records that should not be received by the backend. EPSS estimates a 2.48% chance of exploitation in the next 30 days.

Description

An issue has been found in PowerDNS DNSDist before 1.3.3 allowing a remote attacker to craft a DNS query with trailing data such that the addition of a record by dnsdist, for example an OPT record when adding EDNS Client Subnet, might result in the trailing data being smuggled to the backend as a valid record while not seen by dnsdist. This is an issue when dnsdist is deployed as a DNS Firewall and used to filter some records that should not be received by the backend. This issue occurs only when either the 'useClientSubnet' or the experimental 'addXPF' parameters are used when declaring a new backend.

Metrics

EPSS Probability

2.48%

82.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Powerdns	Dnsdist	<= 1.3.2

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14663Issue Tracking, Third Party Advisory
https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2018-08.htmlVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14663Issue Tracking, Third Party Advisory
https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2018-08.htmlVendor Advisory

Timeline

Published: Nov 26, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-14663?

How severe is CVE-2018-14663?

Severity scoring for CVE-2018-14663 is pending analysis. The EPSS model estimates a 2.48% probability of exploitation in the next 30 days.

How do I fix CVE-2018-14663?

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-2018-14663?

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

Scan your code now

Source: NVD / NIST