[ASA-202101-44] home-assistant: information disclosure

[Morten Linderud]

Arch Linux Security Advisory ASA-202101-44
==========================================

Severity: Medium
Date    : 2021-01-29
CVE-ID  : CVE-2021-3152
Package : home-assistant
Type    : information disclosure
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1488

Summary
=======

The package home-assistant before version 2021.1.4-1 is vulnerable to
information disclosure.

Resolution
==========

Upgrade to 2021.1.4-1.

# pacman -Syu "home-assistant>=2021.1.4-1"

The problem has been fixed upstream in version 2021.1.4.

Workaround
==========

The issue can be mitigated by disabling all custom integrations. This
is achieved by renaming the custom_components folder inside the Home
Assistant configuration folder to something else and restarting Home
Assistant.

Description
===========

Home Assistant before 2021.1.3 allows attackers to obtain sensitive
information because custom integrations with ../ are mishandled leading
to directory-traversal.

Impact
======

Some integrations could allow malicious users to read sensitive
information.

References
==========

https://bugs.archlinux.org/task/69398
https://www.home-assistant.io/blog/2021/01/14/security-bulletin/
https://security.archlinux.org/CVE-2021-3152
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