CVE-2018-3834 Code injection in Insteon
An attacker can permanently brick the device by serving a valid but incompatible firmware image via a man-in-the-middle attack on the update channel.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-3834?
CVE-2018-3834 is a high-severity code injection vulnerability in Insteon Hub Firmware, published on 2 Aug 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-346
Which versions are affected by CVE-2018-3834?
It affects 1 product.
Products include Insteon Hub Firmware.
How do I fix CVE-2018-3834?
No fix has been published for CVE-2018-3834 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2018-3834 being exploited?
There is no known exploitation of CVE-2018-3834 in the wild and no public exploit code.
Other vulnerabilities in Insteon Hub Firmware
Sources
Also known as GHSA-9hrj-7j37-g424.