Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability affects the MeshCore Lovelace card for Home Assistant. The flaw allows an attacker to execute arbitrary JavaScript within the Home Assistant frontend. This could lead to unauthorized actions or data exposure within the affected organization's internal systems.
- Vulnerable Home Assistant card
- Node names lack HTML escaping
- Potential for unauthorized actions
Attack Path
How an attacker could exploit the issue
A network-based attack can occur when a specially crafted node name is rendered without proper HTML escaping. An attacker could leverage this to execute arbitrary JavaScript within the affected application. This could lead to unauthorized actions or data compromise within the Home Assistant environment.
- Exposure condition: Node names are not properly escaped.
- Attacker starting point: Network attacker in radio range.
- Trigger and result: Attacker-controlled node name executes JavaScript.
Live Threat
Current exploitation, exposure, and threat context
The MeshCore Card vulnerability presents a significant risk to organizations utilizing Home Assistant, potentially allowing unauthorized actors to execute arbitrary JavaScript within the Home Assistant frontend. This could lead to the compromise of sensitive data or the disruption of services for users interacting with the affected card. Organizations should prioritize addressing this vulnerability due to its critical severity and the potential for widespread impact on user interfaces and data.
- Likely attacker skill level: Low
- Required access or conditions: Network access
- Business risk or urgency: Critical
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability may allow an unauthenticated attacker to execute arbitrary JavaScript within the Home Assistant frontend. The attacker could leverage this by controlling a node within radio range, whether directly or indirectly connected. This could lead to unauthorized actions or data exposure within the Home Assistant environment.
- Identify Home Assistant instances using the affected card.
- Restrict network access to Home Assistant.
- Update to the fixed version, verify, and monitor.
