VULNERABILITY

Ubuntu: USN-7203-1 (CVE-2018-14644): PowerDNS vulnerabilities

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Ubuntu: USN-7203-1 (CVE-2018-14644): PowerDNS vulnerabilities

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
11/09/2018
Created
01/16/2025
Added
01/15/2025
Modified
01/15/2025

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.

Solution(s)

  • ubuntu-pro-upgrade-pdns-recursor
  • ubuntu-pro-upgrade-pdns-server
  • ubuntu-pro-upgrade-pdns-tools

References

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