Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Powerdns | Recursor | >= 4.0.0, <= 4.1.4 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644Issue TrackingThird Party Advisory
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14644Issue TrackingThird Party Advisory
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07Vendor Advisory
FAQ
What is CVE-2018-14644?
CVE-2018-14644 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 DNS...
How severe is CVE-2018-14644?
CVE-2018-14644 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-14644?
Check the references section above for vendor advisories and patch information. Affected products include: Powerdns Recursor.