CVE intelligence and bounded remediation

CVE-2022-33993 — Domain Name Relay Daemon Project Domain Name Relay Daemon security vulnerability

Medium CVSS 5.3

Misinterpretation of special domain name characters in DNRD (aka Domain Name Relay Daemon) 2.20.3 leads to cache poisoning because domain names and their associated IP addresses are cached in their misinterpreted form.

Severity
Medium
CVSS
5.3 (3.1)
Published
2022-08-15
CISA KEV
Not currently listed
Ecosystem
software/application

Affected products

  • domain_name_relay_daemon_project / domain_name_relay_daemon / 2.20.3

Matched remediation archetype

General vulnerability remediation

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Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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