Horizon Alert
Summary of the vulnerability and why it matters
A command injection vulnerability has been identified in certain Lantronix devices, allowing authenticated users with specific permissions to execute arbitrary commands as the root user. This could lead to a complete loss of device confidentiality, integrity, and availability, potentially affecting connected downstream equipment.
- Allows attackers to run any command on devices.
- Critical for securing remote infrastructure access points.
- Confirm device relevance and assess potential exposure.
Attack Path
How an attacker could exploit the issue
An attacker with services permission can access the terminal or CLI interface of affected Lantronix devices. By submitting unsanitized user input through the "set nfs download" command, which passes this data to a system() call, the attacker can execute arbitrary shell commands. This could lead to a complete loss of confidentiality, integrity, and availability on the device and potentially affect connected serial devices.
- Attacker gains authenticated access.
- Executes arbitrary commands via input.
- Results in complete device compromise.
Live Threat
Current exploitation, exposure, and threat context
Authenticated attackers with services permission could execute arbitrary shell commands as root. This vulnerability, when exploited via the terminal or CLI interface, could lead to a complete loss of confidentiality, integrity, and availability on the affected device, potentially impacting downstream serial-attached devices.
- Device control and integrity.
- Inject commands via CLI interface.
- Complete system compromise.
Operational Fix
Recommended remediation, mitigation, and detection steps
The owner of these Lantronix devices, likely an infrastructure or operations team, must first confirm the scope of affected systems and their exposure. Given the critical nature of command injection on these management devices, a swift, coordinated response is necessary.
- Identify and inventory all affected devices.
- Verify device accessibility and business criticality.
- Plan and coordinate remediation with vendor.
