Vulnerability in Insteon Hub
CVE-2018-3834
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (41.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Insteon Hub
- Insteon Hub Firmware — versions 1013
- Insteon — versions Insteon Hub 2245-222 - Firmware version 1013
Weakness classification (CWE)
References
- www.talosintelligence.com/vulnerability_reports/TALOS-2018-0513 (Technical Description, Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-3834?
- CVE-2018-3834 is a high-severity vulnerability in Insteon Hub, classified under Origin Validation Error. CVSS score: 7.4/10. Published 2018-08-02.
- How severe is CVE-2018-3834?
- High severity. CVSS v3 base score is 7.4 out of 10.