CVE-2023-27482 is a critical vulnerability identified in Home Assistant Supervisor that allows remote authentication bypass to access the Supervisor API. This affects all Home Assistant installations running Supervisor version 2023.01.1 or older. The vulnerability has been assigned a CVSS score of 10, indicating its severity and the significant risk it poses to organizations.
The affected installations include various deployment types of Home Assistant, while configurations such as Home Assistant Container or Home Assistant Core in a Python environment are not impacted. The issue has been mitigated in Supervisor version 2023.03.1, which was rolled out to all affected installations via the auto-update mechanism at the time of this advisory's publication.
Organizations using Home Assistant are advised to upgrade to at least version 2023.3.0 of Home Assistant Core or the latest Supervisor version. For those unable to perform an upgrade, it is critical to ensure that their Home Assistant instance is not exposed to the internet, thereby minimizing the risk of exploitation.
Given the nature of this vulnerability, organizations should prioritize patching immediately to protect their systems from potential unauthorized access.
Vulnerability Details
This vulnerability allows for remote exploitation, bypassing authentication mechanisms for accessing the Supervisor API. The CVSS score of 10 reflects the critical nature of this flaw, with high impacts on confidentiality, integrity, and availability.
The vulnerability is classified under CWE-287, indicating an improper authentication issue. The relevant components affected include both the Home Assistant application and its Supervisor.
Technical Analysis
The root cause of this vulnerability lies in the authentication mechanisms of the Supervisor API, which permitted unauthorized access under certain conditions. The attack vector is network-based, requiring no privileges or user interaction for exploitation.
With an attack complexity rated as low, this vulnerability poses a significant risk to organizations, particularly those using Home Assistant in exposed environments. The confidentiality, integrity, and availability impacts are rated high, meaning successful exploitation could lead to severe consequences.
Risk & Impact Analysis
Given the widespread installation of Home Assistant and the critical nature of this vulnerability, the risk to organizations is substantial. Any organization utilizing affected installations could face unauthorized access to sensitive data and system controls.
The potential blast radius of this vulnerability extends to all installations of Home Assistant using vulnerable Supervisor versions, making it imperative for organizations to assess their exposure. The urgency for remediation is high, considering the CVSS score and the implications of successful exploitation.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions of Home Assistant are affected by this vulnerability:
All versions of Home Assistant Supervisor prior to 2023.03.1 and Home Assistant Core versions prior to 2023.3.0 are impacted. Organizations should upgrade to these versions or later to mitigate the risks.
Mitigation & Remediation
To remediate this vulnerability, organizations should upgrade to at least Supervisor version 2023.03.1 and Home Assistant Core version 2023.3.0. For those unable to upgrade, it is highly advised to not expose the Home Assistant instance to the internet.
Penetration testing can also help identify any potential weaknesses in configurations and ensure that security measures are effective.
Detection Guidance
Organizations should monitor logs for any unauthorized access attempts and behavioral anomalies that may indicate exploitation of this vulnerability. Specific attention should be given to any attempts to access the Supervisor API without proper authentication.
AppSecure Threat Intelligence Insight
The vulnerability represented by CVE-2023-27482 highlights the importance of robust authentication mechanisms in system design, especially for network-exposed applications. Organizations must continuously evaluate their security posture and implement regular updates and security assessments.
For further insights into application security, organizations can explore our guides on API security testing and penetration testing methodology to enhance their defenses.
Understanding the implications of vulnerabilities like CVE-2023-27482 is crucial for maintaining the security of home automation systems and ensuring that systems remain protected against unauthorized access.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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