CVE-2018-3833

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 v3.1

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

CVSS v3.0

8.6 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

CVSS v2.0

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N

EPSS

1.12% chance of exploitation in the next 30 days, 64th percentile

Published

2018-08-23

Updated

2024-09-17

Proof-of-concept exploits (1)

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

References

• CVE Record
• NVD entry

Related

• CVE-2018-3815
• CVE-2018-3836
• CVE-2018-3814
• CVE-2018-3839
• CVE-2018-3811
• CVE-2018-3840