CVE-2021-20991

Fibaro Home Center Authenticated remote command execution

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In Fibaro Home Center 2 and Lite devices with firmware version 4.540 and older an authenticated user can run commands as root user using a command injection vulnerability.

En dispositivos Fibaro Home Center versión 2 y Lite con versiones de firmware 4.540 y anteriores, un usuario autenticado puede ejecutar comandos como usuario root usando una vulnerabilidad de inyección de comandos

Fibaro Home Center Light and Fibaro Home Center 2 versions 4.600 and below suffer from man-in-the-middle, missing authentication, remote command execution, and missing encryption vulnerabilities.

*Credits: Marton Illes IoT Inspector Research Lab https://www.iot-inspector.com

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-17 CVE Reserved
2021-04-19 CVE Published
2024-09-16 CVE Updated
2024-09-16 First Exploit
2024-09-22 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CAPEC

References (3)

URL	Tag	Source
http://seclists.org/fulldisclosure/2021/Apr/27	Mailing List

URL	Date	SRC
http://packetstormsecurity.com/files/162243/Fibaro-Home-Center-MITM-Missing-Authentication-Code-Execution.html	2024-09-16
https://www.iot-inspector.com/blog/advisory-fibaro-home-center	2024-09-16

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Fibaro Search vendor "Fibaro"	Home Center 2 Firmware Search vendor "Fibaro" for product "Home Center 2 Firmware"	<= 4.540 Search vendor "Fibaro" for product "Home Center 2 Firmware" and version " <= 4.540"	-	Affected	in	Fibaro Search vendor "Fibaro"	Home Center 2 Search vendor "Fibaro" for product "Home Center 2"	-	-	Safe
Fibaro Search vendor "Fibaro"	Home Center Lite Firmware Search vendor "Fibaro" for product "Home Center Lite Firmware"	<= 4.540 Search vendor "Fibaro" for product "Home Center Lite Firmware" and version " <= 4.540"	-	Affected	in	Fibaro Search vendor "Fibaro"	Home Center Lite Search vendor "Fibaro" for product "Home Center Lite"	-	-	Safe