CVE-2017-7652

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-04-25 · updated 2026-06-17
Weakness: CWE-789

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.

Affected products

Debian Linux: 7.0, 8.0, 9.0
The Eclipse Foundation Eclipse Mosquitto: from 1.0 through 1.4.14

References

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

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