CVE-2023-41895— Cross-site Scripting via auth_callback login 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login页面存在安全漏洞。攻击者可利用该漏洞使用本地Home assistant凭据登录到指定redirect_uri和client_id参数的另一个网站。
Possible ATT&CK Techniques 3 AI
T1059 · Command and Scripting Interpreter T1078 · Valid Accounts T1189 · Drive-by Compromise
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I. Basic Information for CVE-2023-41895
Vulnerability Information
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Vulnerability Title
Cross-site Scripting via auth_callback login in Home Assistant Core
Source: CVE Program / CVE List V5
Vulnerability Description
Home assistant is an open source home automation. The Home Assistant login page allows users to use their local Home Assistant credentials and log in to another website that specifies the `redirect_uri` and `client_id` parameters. Although the `redirect_uri` validation typically ensures that it matches the `client_id` and the scheme represents either `http` or `https`, Home Assistant will fetch the `client_id` and check for `<link rel="redirect_uri" href="...">` HTML tags on the page. These URLs are not subjected to the same scheme validation and thus allow for arbitrary JavaScript execution on the Home Assistant administration page via usage of `javascript:` scheme URIs. This Cross-site Scripting (XSS) vulnerability can be executed on the Home Assistant frontend domain, which may be used for a full takeover of the Home Assistant account and installation. 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:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Home Assistant 跨站脚本漏洞
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login页面存在安全漏洞。攻击者可利用该漏洞使用本地Home assistant凭据登录到指定redirect_uri和client_id参数的另一个网站。
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-2023-41895
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2023-41895 (1)
-
https://github.com/home-assistant/core/security/advisories/GHSA-jvxq-x42r-f7mv x_refsource_CONFIRM
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-2023-44385 | 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-2023-41894 | 5.3 MEDIUM | Local-only webhooks externally accessible via SniTun in Home Assistant Core |
| CVE-2023-41893 | 4.3 MEDIUM | Account takeover via auth_callback login in Home Assistant Core |
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V. Comments for CVE-2023-41895
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