CVE-2017-7650 Auth bypass in Mosquitto
Attackers can bypass pattern-based ACLs in Mosquitto by using specific client IDs, allowing unauthorized access to restricted MQTT topics.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-7650?
CVE-2017-7650 is a medium-severity authentication bypass vulnerability in Debian Debian Linux, published on 11 Sep 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2017-7650?
It affects 2 products.
Products include Debian Debian Linux, Eclipse Mosquitto.
How do I fix CVE-2017-7650?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2017-7650 being exploited?
There is no known exploitation of CVE-2017-7650 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2017-7650, DEBIAN-CVE-2017-7650, DLA-961-1, DSA-3865-1, GHSA-vcg2-pq78-9mhr, UBUNTU-CVE-2017-7650.