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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-14644
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-14644.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201811-13
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 4.1.5-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 4.1.7-1 |
| debian | bullseye | fixed | 4.1.7-1 |
| debian | forky | fixed | 4.1.7-1 |
| debian | sid | fixed | 4.1.7-1 |
| debian | trixie | fixed | 4.1.7-1 |
References
Verify integrity in audit chain (admin only). AS-IS.