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CVE-2023-41894— Local-only webhooks externally accessible via SniTun in Home Assistant Core

Quick assessment

Affected
home-assistant core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Home Assistant是一套开源的家庭自动化管理系统。该系统主要用于控制家庭自动化设备。 Home assistant 2023.9.0之前版本存在安全漏洞，该漏洞源于组件webhook存在安全漏洞，允许攻击者通过SniTun从外部访问本地的webhook。

CVSS 5.3 · Medium EPSS 0.42% · P35
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I. Basic Information for CVE-2023-41894

Vulnerability Information
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Vulnerability Title
Local-only webhooks externally accessible via SniTun in Home Assistant Core
Source: CVE Program / CVE List V5
Vulnerability Description
Home assistant is an open source home automation. The assessment verified that webhooks available in the webhook component are triggerable via the `*.ui.nabu.casa` URL without authentication, even when the webhook is marked as Only accessible from the local network. This issue is facilitated by the SniTun proxy, which sets the source address to 127.0.0.1 on all requests sent to the public URL and forwarded to the local Home Assistant. This issue has been addressed in version 2023.9.0 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在范围间的资源转移不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Home Assistant 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Home Assistant是一套开源的家庭自动化管理系统。该系统主要用于控制家庭自动化设备。 Home assistant 2023.9.0之前版本存在安全漏洞，该漏洞源于组件webhook存在安全漏洞，允许攻击者通过SniTun从外部访问本地的webhook。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
home-assistant core < 2023.9.0 -

II. Public POCs for CVE-2023-41894

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III. Intelligence Information for CVE-2023-41894

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Vendor Advisories for CVE-2023-41894 (1)

Security Blog Posts for CVE-2023-41894 (1)

Same Patch Batch · home-assistant · 2023-10-19 · 8 CVEs total

CVE-2023-41897 8.8 HIGH Lack of XFO header allows clickjacking in Home Assistant Core
CVE-2023-41895 8.8 HIGH Cross-site Scripting via auth_callback login in Home Assistant Core
CVE-2023-44385 8.6 HIGH Client-Side Request Forgery in Home Assistant iOS/macOS native Apps
CVE-2023-41898 8.6 HIGH Arbitrary URL load in Android WebView in `MyActivity.kt` in Home Assistant Companion for
CVE-2023-41896 7.1 HIGH Fake websocket server installation permits full takeover in Home Assistant Core
CVE-2023-41899 6.6 MEDIUM Partial Server-Side Request Forgery in Home Assistant Core
CVE-2023-41893 4.3 MEDIUM Account takeover via auth_callback login in Home Assistant Core

IV. Related Vulnerabilities

Same product: core
Same vendor: home-assistant
Same weakness: CWE-669

V. Comments for CVE-2023-41894

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