Horizon Alert
Summary of the vulnerability and why it matters
A security vulnerability has been identified in Moxa's network security appliances and routers that allows a user with basic access to gain elevated privileges and modify system configurations. While this does not compromise data confidentiality or integrity, it could lead to unauthorized changes to critical system settings.
- Low-privilege users can alter device settings.
- Important for securing network infrastructure access.
- Confirm relevance and exposure for network devices.
Attack Path
How an attacker could exploit the issue
An attacker with low-level authenticated access to a Moxa network security appliance or router can exploit a flaw in the `/api/v1/setting/data` endpoint. By bypassing proper access controls, they can call this API without the necessary permissions, potentially leading to unauthorized modification or access to critical system configuration data, which can result in privilege escalation.
- Requires low-privileged authenticated access.
- Triggered by calling a specific API endpoint.
- Risk of privilege escalation and configuration changes.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability in Moxa network appliances could allow a low-privileged authenticated user to access or modify system configuration data through an API endpoint. This could lead to privilege escalation, enabling unauthorized changes to sensitive system settings, although it does not compromise data in subsequent systems.
- System configuration data at risk.
- Unnecessary privileges granted via API.
- Unauthorized modification of settings.
Operational Fix
Recommended remediation, mitigation, and detection steps
Security teams and infrastructure owners responsible for Moxa network appliances and routers must first identify all instances of the affected technology within their environment. Confirming the network reachability and business criticality of these devices is crucial for risk-based prioritization, followed by locating the asset's accountable owner to plan appropriate remediation actions.
- Identify and inventory affected Moxa devices.
- Verify network exposure and business criticality.
- Plan remediation with device owners.
