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CVE-2023-41898— Arbitrary URL load in Android WebView in `MyActivity.kt` in Home Assistant Companion for Android

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 2023.9.2之前版本存在安全漏洞，该漏洞源于WebView中存在任意URL加载问题。攻击者可利用该漏洞进行任意JavaScript执行、有限的本地代码执行和凭据盗窃等操作。

CVSS 8.6 · High EPSS 0.16% · P5
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I. Basic Information for CVE-2023-41898

Vulnerability Information
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Vulnerability Title
Arbitrary URL load in Android WebView in `MyActivity.kt` in Home Assistant Companion for Android
Source: CVE Program / CVE List V5
Vulnerability Description
Home assistant is an open source home automation. The Home Assistant Companion for Android app up to version 2023.8.2 is vulnerable to arbitrary URL loading in a WebView. This enables all sorts of attacks, including arbitrary JavaScript execution, limited native code execution, and credential theft. This issue has been patched in version 2023.9.2 and all users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as GitHub Security Lab (GHSL) Vulnerability Report: `GHSL-2023-142`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Home Assistant 代码注入漏洞
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 2023.9.2之前版本存在安全漏洞，该漏洞源于WebView中存在任意URL加载问题。攻击者可利用该漏洞进行任意JavaScript执行、有限的本地代码执行和凭据盗窃等操作。
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 < 2023.9.2 -

II. Public POCs for CVE-2023-41898

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III. Intelligence Information for CVE-2023-41898

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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-2023-41896 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

IV. Related Vulnerabilities

Same product: core
Same vendor: home-assistant
Same weakness: CWE-345

V. Comments for CVE-2023-41898

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