CVE-2020-27220

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Eclipse Hono AMQP and MQTT protocol adapters do not check whether an authenticated gateway device is authorized to receive command & control messages when it has subscribed only to commands for a specific device. The missing check involves verifying that the command target device is configured giving permission for the gateway device to act on its behalf. This means an authenticated device of a certain tenant, notably also a non-gateway device acting like a gateway, may receive command & control messages targeted at a different device of the same tenant without corresponding permissions getting checked.

Los adaptadores de protocolo AMQP y MQTT de Eclipse Hono no comprueban si un dispositivo gateway autenticado está autorizado para recibir mensajes de comando y control cuando se ha suscrito solo a comandos para un dispositivo específico. La falta de comprobación implica verificar que el dispositivo de destino del comando esté configurado dando permiso para que el dispositivo gateway actúe en su nombre. Esto significa que un dispositivo autenticado de un determinado inquilino, en particular también un dispositivo que no sea un gateway que actúa como un gateway, puede recibir mensajes de comando y control direccionados hacia un dispositivo diferente del mismo inquilino sin que sean comprobados los permisos correspondientes

*Credits: N/A

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

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-19 CVE Reserved
2021-01-14 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-862: Missing Authorization

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://bugs.eclipse.org/bugs/show_bug.cgi?id=569856	2021-01-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Eclipse Search vendor "Eclipse"		Hono Search vendor "Eclipse" for product "Hono"				>= 1.4.0 <= 1.4.4 Search vendor "Eclipse" for product "Hono" and version " >= 1.4.0 <= 1.4.4"		-		Affected
Eclipse Search vendor "Eclipse"		Hono Search vendor "Eclipse" for product "Hono"				1.5.0 Search vendor "Eclipse" for product "Hono" and version "1.5.0"		-		Affected