CVE-2017-7650

Name	CVE-2017-7650
Description	In Mosquitto before 1.4.12, 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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-961-1, DSA-3865-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mosquitto (PTS)	bullseye (security), bullseye	2.0.11-1+deb11u1	fixed
	bookworm, bookworm (security)	2.0.11-1.2+deb12u1	fixed
	sid, trixie	2.0.20-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
mosquitto	source	wheezy	0.15-2+deb7u1	DLA-961-1
mosquitto	source	jessie	1.3.4-2+deb8u1	DSA-3865-1
mosquitto	source	(unstable)	1.4.10-3

http://mosquitto.org/2017/05/security-advisory-cve-2017-7650/
Patches: https://mosquitto.org/files/cve/2017-7650/