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Haas Controller

Act Now9.8ICS-CERT ICSA-22-298-01Oct 25, 2022
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

The Haas Controller (firmware version 100.20.000.1110) contains multiple vulnerabilities in the Ethernet Q Commands service that allow unauthenticated remote code execution. The service does not require authentication for command submission, does not encrypt communications, and does not properly validate or restrict commands. These weaknesses allow an attacker to remotely execute arbitrary commands on the controller, causing denial-of-service, tool damage, quality defects, or complete loss of machine control. The vulnerabilities stem from missing authentication (CWE-306), weak credential handling (CWE-1220), and unencrypted communications (CWE-319).

What this means
What could happen
An attacker could execute commands on the Haas Controller, causing production line shutdowns, tool damage, quality defects, or complete loss of control over the manufacturing process.
Who's at risk
Manufacturing facilities operating Haas CNC machines and machining centers should prioritize this advisory. Any shop or production environment using Haas Controller firmware version 100.20.000.1110 is at risk of production interruption and tool damage.
How it could be exploited
An attacker with network access to port 21 or the Ethernet Q Commands service (typically port 21 for FTP or custom ports) can send unauthenticated commands without credentials. The attacker can inject arbitrary commands that execute on the controller with no authentication required, allowing remote code execution and control of the CNC machine.
Prerequisites
  • Network access to the Haas Controller (usually internal network or Internet-exposed)
  • No credentials required
  • Ethernet Q Commands service must be enabled and reachable
Remotely exploitable from networkNo authentication requiredLow complexity attackHigh CVSS score (9.8)No patch availableAffects safety and production controlMultiple weaknesses (CWE-306 authentication, CWE-1220 credentials, CWE-319 encryption)
Exploitability
Low exploit probability (EPSS 0.2%)
Affected products (1)
ProductAffected VersionsFix Status
Haas Controller - Haas Controller:100.20.000.1110No fix (EOL)
Remediation & Mitigation
0/6
Do now
0/4
HARDENINGImplement network firewall rules to restrict access to the Haas Controller to only authorized engineering workstations and disable Internet-facing access
WORKAROUNDEnable authentication on the Ethernet Q Commands service and configure a strong enforced password
WORKAROUNDEnable encryption on all network communications to the controller to prevent password capture and command sniffing
WORKAROUNDRestrict and audit macro write permissions; limit the number of macros that can be created or uploaded to the controller
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HARDENINGIsolate Haas Controller and all CNC machines from the business network; place them on a separate production network with strict ingress/egress controls
Mitigations - no patch available
0/1
Haas Controller - Haas Controller: has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGImplement physical access controls; ensure only authorized personnel can access the controller via local ports or USB interfaces
View full CISA ICS-CERT advisory
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