Vulnerability · Published Oct 19, 2023 · Assigned by GitHub_M

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

High 8.6

In plain English

A high-severity insufficient verification of data authenticity in core from home-assistant. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)8.6High

Exploit odds (30 days)0.2%top 92.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack tooling1Public PoC

Official 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`.

Affected products (as reported)

Vendor	Product	Versions
home-assistant	core	< 2023.9.2

Weakness: CWE-345, CWE-94 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References

https://github.com/home-assistant/core/security/advisories/GHSA-jvpm-q3hq-86rg x_refsource_CONFIRM