CVE-2018-20145 Missing authorization in n/a

High 7.5 Published 13 Dec 2018 Updated 5 Aug 2024

An ACL bypass in Eclipse Mosquitto allows unauthorized access when specific listener settings are enabled, requiring an upgrade to fix.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2018-20145?

CVE-2018-20145 is a high-severity missing authorization vulnerability in n/a, published on 13 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Eclipse Mosquitto 1.5.x before 1.5.5 allows ACL bypass: if the option per_listener_settings was set to true, and the default listener was in use, and the default listener specified an acl_file, then the acl file was being ignored.

Weakness: CWE-732

Which versions are affected by CVE-2018-20145?

It affects 1 product.

Products include Eclipse Mosquitto.

How do I fix CVE-2018-20145?

Upgrade to a fixed version.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2018-20145 being exploited?

There is no known exploitation of CVE-2018-20145 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2018-20145, GHSA-p6fp-h8pq-3x5p.