Vulnerability Description
An exploitable permanent denial of service vulnerability exists in Insteon Hub running firmware version 1013. The firmware upgrade functionality, triggered via PubNub, retrieves signed firmware binaries using plain HTTP requests. The device doesn't check the kind of firmware image that is going to be installed and thus allows for flashing any signed firmware into any MCU. Since the device contains different and incompatible MCUs, flashing one firmware to the wrong MCU will result in a permanent brick condition. To trigger this vulnerability, an attacker needs to impersonate the remote server "cache.insteon.com" and serve a signed firmware image.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Insteon | Hub Firmware | 1013 |
| Insteon | Hub | - |
Related Weaknesses (CWE)
References
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0513ExploitTechnical DescriptionThird Party Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0513ExploitTechnical DescriptionThird Party Advisory
FAQ
What is CVE-2018-3834?
CVE-2018-3834 is a vulnerability with a CVSS score of 7.4 (HIGH). An exploitable permanent denial of service vulnerability exists in Insteon Hub running firmware version 1013. The firmware upgrade functionality, triggered via PubNub, retrieves signed firmware binari...
How severe is CVE-2018-3834?
CVE-2018-3834 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-3834?
Check the references section above for vendor advisories and patch information. Affected products include: Insteon Hub Firmware, Insteon Hub.