Vulnerability Details : CVE-2023-27482
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 internet.
Vulnerability category: BypassGain privilege
Products affected by CVE-2023-27482
- cpe:2.3:a:home-assistant:home-assistant:*:*:*:*:*:*:*:*
- cpe:2.3:a:home-assistant:supervisor:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-27482
85.95%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 99 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-27482
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
10.0
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
3.9
|
6.0
|
NIST | |
10.0
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
3.9
|
6.0
|
GitHub, Inc. |
CWE ids for CVE-2023-27482
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: security-advisories@github.com (Primary)
References for CVE-2023-27482
-
https://github.com/home-assistant/core/security/advisories/GHSA-2j8f-h4mr-qr25
Authentication bypass Supervisor API · Advisory · home-assistant/core · GitHubVendor Advisory
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https://www.elttam.com/blog/pwnassistant/
PwnAssistant - Controlling /home's via a Home Assistant RCE
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https://www.home-assistant.io/blog/2023/03/08/supervisor-security-disclosure/
Disclosure: Supervisor security vulnerability - Home AssistantIssue Tracking;Vendor Advisory
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https://github.com/elttam/publications/blob/master/writeups/home-assistant/supervisor-authentication-bypass-advisory.md
publications/supervisor-authentication-bypass-advisory.md at master · elttam/publications · GitHub
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