CVE-2023-41896
7.1 · HIGHOverview
CVE-2023-41896 is a high-severity vulnerability affecting home-assistant home-assistant. It was published on October 19, 2023 and has a CVSS 3.1 base score of 7.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Home assistant is an open source home automation. Whilst auditing the frontend code to identify hidden parameters, Cure53 detected `auth_callback=1`, which is leveraged by the WebSocket authentication logic in tandem with the `state` parameter. The state parameter contains the `hassUrl`, which is subsequently utilized to establish a WebSocket connection. This behavior permits an attacker to create a malicious Home Assistant link with a modified state parameter that forces the frontend to connect to an alternative WebSocket backend. Henceforth, the attacker can spoof any WebSocket responses and trigger cross site scripting (XSS). Since the XSS is executed on the actual Home Assistant frontend domain, it can connect to the real Home Assistant backend, which essentially represents a comprehensive takeover scenario. Permitting the site to be iframed by other origins, as discussed in GHSA-935v-rmg9-44mw, renders this exploit substantially covert since a malicious website can obfuscate the c
Remediation
Check the references section for vendor advisories and patches from home-assistant. Update home-assistant to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| home-assistant | home-assistant | >= 0, < 2023.8.0 | Affected |
| home-assistant | home-assistant-js-websocket | >= 0, < 8.2.0 | Affected |
References
Frequently Asked Questions
What is CVE-2023-41896?
CVE-2023-41896 is a high-severity vulnerability affecting home-assistant home-assistant. It was published on October 19, 2023 and has a CVSS 3.1 base score of 7.1 (HIGH).
How severe is CVE-2023-41896?
This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2023-41896?
Check the references section for vendor advisories and patches from home-assistant. Update home-assistant to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-41896?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-41896 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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