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Improper Authorization Affecting org.eclipse.hono:hono-adapter-amqp-vertx package, versions [1.4.0,1.4.5) [1.5.0,1.5.1)

0.0
medium

  • Attack Complexity

    Low

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  • snyk-id

    SNYK-JAVA-ORGECLIPSEHONO-1061944

  • published

    18 Jan 2021

  • disclosed

    18 Jan 2021

  • credit

    Carsten Lohmann

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Introduced: 18 Jan 2021

CVE-2020-27220 Open this link in a new tab
CWE-285 Open this link in a new tab

How to fix?

Upgrade org.eclipse.hono:hono-adapter-amqp-vertx to version 1.4.5, 1.5.1 or higher.

Overview

Affected versions of this package are vulnerable to Improper Authorization. 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.