PowerDNS and Log4J/Log4Shell

Dec 16, 2021

As you may have heard, a critical vulnerability in the Log4J library was published recently. We have received questions about our software’s vulnerability to these exploits.

None of our open source products use Java:

  • PowerDNS Authoritative Server
  • PowerDNS Recursor
  • dnsdist
  • metronome

Also, none of the commercial PowerDNS products use Java. If you are a customer and you have concerns, please contact us.

However, we do know that some of our users output various data streams (logs, dnstap, our own Protobuf logging, etc.) from our software. Those streams may end up in 3rd-party products like Elasticsearch, which is vulnerable (Elastic advisory on Log4J).

So, to judge if you, as a PowerDNS user, are affected by the Log4J vulnerability, please take into account what you do with your DNS data!

About the author

Peter van Dijk

Peter van Dijk

Senior Developer at PowerDNS

Related Articles

PowerDNS Recursor 5.1.0-alpha1 Released

We are proud to announce the first alpha release of PowerDNS Recursor 5.1.0!

Otto Moerbeek May 15, 2024

PowerDNS Recursor 4.8.9, 4.9.6 and 5.0.5 Released

Today we have released PowerDNS Recursor 4.8.9, 4.9.6 and 5.0.5. These releases are maintenance releases that fix a few...

Otto Moerbeek May 14, 2024

PowerDNS DNSdist 1.9.4 released

We released PowerDNS DNSdist 1.9.4 today. This release fixes CVE-2024-25581, a denial of service security issue affecting...

Remi Gacogne May 13, 2024

PowerDNS Recursor Security Advisory 2024-02

Today we have released PowerDNS Recursor 4.8.8, 4.9.5 and 5.0.4. These releases fix PowerDNS Security Advisory 2024-02: if...

Otto Moerbeek Apr 24, 2024