CVE-2018-3834

Public Exploit

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.

Category

7.4
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.22%
Third-Party Advisory talosintelligence.com
Affected: Insteon Insteon
Published at:
Updated at:

References

Link Tags
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0513 exploit third party advisory technical description

Frequently Asked Questions

What is the severity of CVE-2018-3834?
CVE-2018-3834 has been scored as a high severity vulnerability.
How to fix CVE-2018-3834?
To fix CVE-2018-3834, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-3834 being actively exploited in the wild?
It is possible that CVE-2018-3834 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-3834?
CVE-2018-3834 affects Insteon Insteon.
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