Debian DLA-1525-1 : mosquitto security update

Medium Nessus Plugin ID 117835


The remote Debian host is missing a security update.



As invalid UTF-8 strings are not correctly checked, an attacker could cause a denial of service to other clients by disconnecting them from the broker with special crafted topics.


Due to a memory leak unauthenticated clients can send special crafted CONNECT packets which could cause a denial of service in the broker.


Due to wrong file permissions local users could obtain topic information from the mosquitto database.

For Debian 8 'Jessie', these problems have been fixed in version 1.3.4-2+deb8u3.

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.


Upgrade the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 117835

File Name: debian_DLA-1525.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/10/01

Modified: 2018/10/01

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

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

CVSS v3.0

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libmosquitto-dev, p-cpe:/a:debian:debian_linux:libmosquitto1, p-cpe:/a:debian:debian_linux:libmosquittopp-dev, p-cpe:/a:debian:debian_linux:libmosquittopp1, p-cpe:/a:debian:debian_linux:mosquitto, p-cpe:/a:debian:debian_linux:mosquitto-clients, p-cpe:/a:debian:debian_linux:mosquitto-dbg, p-cpe:/a:debian:debian_linux:python-mosquitto, p-cpe:/a:debian:debian_linux:python3-mosquitto, cpe:/o:debian:debian_linux:8.0

Patch Publication Date: 2018/09/28

Reference Information

CVE: CVE-2017-7653, CVE-2017-7654, CVE-2017-9868