pdns-recursor: An issue has been found in PowerDNS Recursor from 4.0.0 up to and including 4.1.4
CVE-2018-14644 is fixed in pdns-recursor on 1 platform by pdns-recursor 4.1.1-2ubuntu0.1~esm1 (version 4.1.1-2ubuntu0.1~esm1), released March 25, 2022. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| pdns-recursor · Ubuntu 18.04.6 LTS (bionic) | 4.1.1-2ubuntu0.1~esm1 | pdns-recursor 4.1.1-2ubuntu0.1~esm1 | Mar 25, 2022 |
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