Auth bypass in Eclipse Mosquitto
CVE-2017-7650
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.025 (84.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
- Eclipse Mosquitto
- Eclipse Foundation Mosquitto — versions 0.15 to 1.4.11 inclusive
- Debian Linux — versions 8.0
Weakness classification (CWE)
References
- mosquitto.org/2017/05/security-advisory-cve-2017-7650/ (Patch, Vendor Advisory)
- www.securityfocus.com/bid/98741 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2017/dsa-3865 (vendor-advisory, Third Party Advisory)
- bugs.eclipse.org/bugs/show_bug.cgi (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-7650?
- CVE-2017-7650 is a medium-severity vulnerability in Eclipse Mosquitto, classified under Improper Authentication. CVSS score: 6.5/10. Published 2017-09-11.
- How severe is CVE-2017-7650?
- Medium severity. CVSS v3 base score is 6.5 out of 10.