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Triangle Research Nano-10 PLC Improper Input Validation

Low RiskICS-CERT ICSA-13-329-01Aug 28, 2013
Summary

The Triangle Research Nano-10 PLC firmware contains an improper input validation vulnerability (CWE-20). The device does not adequately validate input received over the network, which could allow an attacker to send malformed data that the device processes without proper checks. This affects firmware versions before r82, and no patch is currently available from the vendor.

What this means
What could happen
An attacker with network access to a Nano-10 PLC could send specially crafted input that bypasses validation checks, potentially allowing them to alter process parameters, stop operations, or cause unexpected device behavior in manufacturing environments.
Who's at risk
Manufacturing facilities operating Triangle Research Nano-10 PLCs in production environments where the device controls critical machinery or processes and is reachable from engineering networks or external systems.
How it could be exploited
An attacker sends malformed or unexpected input to the Nano-10 PLC over the network. Because the device does not properly validate this input before processing it, the device accepts and acts on the malicious data, which could modify control logic, alter setpoints, or trigger unintended actions.
Prerequisites
  • Network access to the Nano-10 PLC
  • No authentication required to send input to the device
remotely exploitableno authentication requiredno patch availableimproper input validation
Exploitability
Moderate exploit probability (EPSS 1.3%)
Affected products (1)
ProductAffected VersionsFix Status
Nano-10 PLC firmware: <r82<r82No fix (EOL)
Remediation & Mitigation
0/3
Mitigations - no patch available
0/3
Nano-10 PLC firmware: <r82 has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGImplement network segmentation to limit access to the Nano-10 PLC. Only allow traffic from authorized engineering workstations and supervisory systems.
HARDENINGDeploy firewall rules or access control lists to restrict inbound connections to the PLC to known management and control network segments.
HARDENINGMonitor network traffic to and from the PLC for anomalous input patterns that may indicate exploitation attempts.
View full CISA ICS-CERT advisory
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