Improper Authentication Affecting mosquitto package, versions <1.4.10-3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 Sept 2017
- disclosed11 Sept 2017
Introduced: 11 Sep 2017
CVE-2017-7650 (opens in a new tab)How to fix?
Upgrade Debian:12 mosquitto to version 1.4.10-3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream mosquitto package and not the mosquitto package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2017-7650
- http://mosquitto.org/2017/05/security-advisory-cve-2017-7650/
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=516765
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7650
- http://www.debian.org/security/2017/dsa-3865
- http://www.securityfocus.com/bid/98741
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-7650