ProMinent MultiFLEX M10a Controller
Plan Patch8.8ICS-CERT ICSA-17-285-01Oct 12, 2017
Attack VectorNetwork
Auth RequiredLow
ComplexityLow
User InteractionNone needed
Summary
ProMinent MultiFLEX M10a controller contains multiple vulnerabilities (CWE-602, CWE-613, CWE-352, CWE-200, CWE-620) allowing authenticated users to execute arbitrary commands remotely on the controller. All versions of the device are affected. The vulnerabilities are remotely exploitable with low skill level required once valid engineering credentials are obtained.
What this means
What could happen
An attacker with valid engineering credentials could remotely execute commands on the MultiFLEX M10a controller, potentially altering chemical injection setpoints, stopping dosing operations, or manipulating process parameters in water treatment or chemical feed systems.
Who's at risk
Water treatment facilities, chemical injection systems, and any operation using ProMinent MultiFLEX M10a dosing controllers. This affects facility operators responsible for maintaining safe chemical feed rates and process stability.
How it could be exploited
An attacker with valid engineering workstation credentials can connect to the MultiFLEX M10a's network interface to execute arbitrary commands on the controller. The vulnerability requires authentication but low skill to exploit once credentials are obtained.
Prerequisites
- Valid engineering workstation credentials
- Network access to the MultiFLEX M10a controller
- Access to engineering interface or remote management port
Remotely exploitableNo patch availableLow complexity to exploitAffects safety-critical chemical dosing operations
Exploitability
Low exploit probability (EPSS 0.4%)
Affected products (1)
ProductAffected VersionsFix Status
The followingAll versionsNo fix yet
Remediation & Mitigation
0/5
Do now
0/3HARDENINGRestrict network access to the MultiFLEX M10a engineering interface using firewall rules or network segmentation; only permit connections from authorized engineering workstations
HARDENINGImplement strong access controls and change default credentials for all engineering accounts
WORKAROUNDDisable remote engineering access if not actively required for operations; require local console access only
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HARDENINGMonitor network traffic to the controller for unauthorized access attempts
Long-term hardening
0/1HARDENINGContact ProMinent directly to determine long-term mitigation or upgrade path given no fix is available
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