CVE-2017-7652 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

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

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.5