Vulnerability · Published Apr 19, 2021 · Assigned by CERTVDE

CVE-2021-20989Fibaro Home Center Insufficient remote access server authorization

Medium 5.9

In plain English

A medium-severity improper certificate validation in Fibaro Home Center from Fibar Group S.A. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities).

Severity (CVSS 3.1)5.9Medium

Exploit odds (30 days)2.0%top 19.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Fibaro Home Center 2 and Lite devices with firmware version 4.600 and older initiate SSH connections to the Fibaro cloud to provide remote access and remote support capabilities. This connection can be intercepted using DNS spoofing attack and a device initiated remote port-forward channel can be used to connect to the web management interface. Knowledge of authorization credentials to the management interface is required to perform any further actions.

Affected products (as reported)

Vendor	Product	Versions
Fibar Group S.A	Fibaro Home Center	Home Center 2 – through 4.600Home Center Lite – through 4.600

Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://www.iot-inspector.com/blog/advisory-fibaro-home-center/ x_refsource_CONFIRM
20210419 [CVE-2021-20989, CVE-2021-20990, CVE-2021-20991, CVE-2021-20992] Multiple vulnerabilities in Fibaro Home Center mailing-list, x_refsource_FULLDISC
http://packetstormsecurity.com/files/162243/Fibaro-Home-Center-MITM-Missing-Authentication-Code-Execution.html x_refsource_MISC