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Debian DLA-961-1 : mosquitto security update

medium Nessus Plugin ID 100513

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Synopsis

The remote Debian host is missing a security update.

Description

CVE-2017-7650: Pattern based ACLs can be bypassed by clients that set their username/client id to ‘#’ or ‘+’. This allows locally or remotely connected clients to access MQTT topics that they do have the rights to. The same issue may be present in third-party authentication/access control plugins for Mosquitto.

The vulnerability only comes into effect where pattern based ACLs are in use, or potentially where third-party plugins are in use.

For Debian 7 'Wheezy', these problems have been fixed in version 0.15-2+deb7u1.

We recommend that you upgrade your mosquitto packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2017/05/msg00034.html

https://packages.debian.org/source/wheezy/mosquitto

Plugin Details

Severity: Medium

ID: 100513

File Name: debian_DLA-961.nasl

Version: 3.9

Type: local

Agent: unix

Published: 5/31/2017

Updated: 12/17/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.1

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS Score Source: CVE-2017-7650

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python-mosquitto, p-cpe:/a:debian:debian_linux:libmosquittopp0, cpe:/o:debian:debian_linux:7.0, p-cpe:/a:debian:debian_linux:mosquitto-clients, p-cpe:/a:debian:debian_linux:libmosquittopp0-dev, p-cpe:/a:debian:debian_linux:libmosquitto0-dev, p-cpe:/a:debian:debian_linux:mosquitto, p-cpe:/a:debian:debian_linux:libmosquitto0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/30/2017

Reference Information

CVE: CVE-2017-7650