CVE-2018-3833 Information

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 Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0512

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5