Vulnerability Description
The Eclipse Hono AMQP and MQTT protocol adapters do not check whether an authenticated gateway device is authorized to receive command & control messages when it has subscribed only to commands for a specific device. The missing check involves verifying that the command target device is configured giving permission for the gateway device to act on its behalf. This means an authenticated device of a certain tenant, notably also a non-gateway device acting like a gateway, may receive command & control messages targeted at a different device of the same tenant without corresponding permissions getting checked.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Eclipse | Hono | >= 1.4.0, <= 1.4.4 |
Related Weaknesses (CWE)
References
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=569856Vendor Advisory
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=569856Vendor Advisory
FAQ
What is CVE-2020-27220?
CVE-2020-27220 is a vulnerability with a CVSS score of 8.8 (HIGH). The Eclipse Hono AMQP and MQTT protocol adapters do not check whether an authenticated gateway device is authorized to receive command & control messages when it has subscribed only to commands for a ...
How severe is CVE-2020-27220?
CVE-2020-27220 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-27220?
Check the references section above for vendor advisories and patch information. Affected products include: Eclipse Hono.