CVE-2018-3833 — HIGH (7.5) — White Hats Nepal

Vulnerability Description

An exploitable firmware downgrade 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 firmware version that is going to be installed and thus allows for flashing older firmware images. To trigger this vulnerability, an attacker needs to impersonate the remote server 'cache.insteon.com' and serve any signed firmware image.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Insteon	Hub 2245-222 Firmware	1013
Insteon	Hub 2245-222	-

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0512ExploitTechnical DescriptionThird Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0512ExploitTechnical DescriptionThird Party Advisory

FAQ

What is CVE-2018-3833?

CVE-2018-3833 is a vulnerability with a CVSS score of 7.5 (HIGH). An exploitable firmware downgrade vulnerability exists in Insteon Hub running firmware version 1013. The firmware upgrade functionality, triggered via PubNub, retrieves signed firmware binaries using ...

How severe is CVE-2018-3833?

CVE-2018-3833 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-3833?

Check the references section above for vendor advisories and patch information. Affected products include: Insteon Hub 2245-222 Firmware, Insteon Hub 2245-222.