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CVE-2023-27482

10.0 · CRITICAL

homeassistant is an open source home automation tool.

Published Mar 8, 2023CWE-287EPSS 72.17%

Overview

CVE-2023-27482 is a critical-severity vulnerability. It was published on March 8, 2023 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

homeassistant is an open source home automation tool. A remotely exploitable vulnerability bypassing authentication for accessing the Supervisor API through Home Assistant has been discovered. This impacts all Home Assistant installation types that use the Supervisor 2023.01.1 or older. Installation types, like Home Assistant Container (for example Docker), or Home Assistant Core manually in a Python environment, are not affected. The issue has been mitigated and closed in Supervisor version 2023.03.1, which has been rolled out to all affected installations via the auto-update feature of the Supervisor. This rollout has been completed at the time of publication of this advisory. Home Assistant Core 2023.3.0 included mitigation for this vulnerability. Upgrading to at least that version is thus advised. In case one is not able to upgrade the Home Assistant Supervisor or the Home Assistant Core application at this time, it is advised to not expose your Home Assistant instance to the inter

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/elttam/publications/blob/master/writeups/home-assistant/supervisor-authentication-bypass-advisory.mdGitHubgithub.com/home-assistant/core/security/advisories/GHSA-2j8f-h4mr-qr25Refwww.elttam.com/blog/pwnassistant/Refwww.home-assistant.io/blog/2023/03/08/supervisor-security-disclosure/GitHubgithub.com/elttam/publications/blob/master/writeups/home-assistant/supervisor-authentication-bypass-advisory.mdGitHubgithub.com/home-assistant/core/security/advisories/GHSA-2j8f-h4mr-qr25Refwww.elttam.com/blog/pwnassistant/Refwww.home-assistant.io/blog/2023/03/08/supervisor-security-disclosure/

How CyberStrike helps

Frequently asked questions

What is CVE-2023-27482?

CVE-2023-27482 is a critical-severity vulnerability. It was published on March 8, 2023 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2023-27482?

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-27482?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-27482?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-27482 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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