ProLeiT Plant iT/Brewmaxx
Act Now10SEVD-2023-346-02Dec 12, 2023
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary
Schneider Electric Plant iT/Brewmaxx (v9.60 and later) contains a vulnerability in its embedded Redis open-source database. The vulnerability allows privilege escalation and remote code execution without requiring authentication or user interaction. An attacker with network access to the Redis database port can execute arbitrary commands on the system, potentially compromising the integrity and availability of manufacturing execution and process control functions. The vulnerability is currently being actively exploited in the wild.
What this means
What could happen
An attacker can gain complete control of the Plant iT/Brewmaxx manufacturing execution system remotely without credentials, allowing them to modify process setpoints, alter production parameters, halt operations, or inject malicious commands into your manufacturing or energy control environment.
Who's at risk
Energy utilities and manufacturing plants using Schneider Electric Plant iT/Brewmaxx for process control and manufacturing execution. This affects anyone running version 9.60 or later of this MES/PLC-based system that manages production processes, setpoints, and operational parameters.
How it could be exploited
The vulnerability exists in the embedded Redis database used by Plant iT/Brewmaxx. An attacker on the network can connect directly to the Redis instance and execute arbitrary commands, escalating privileges and achieving remote code execution on the system. No authentication is required if the Redis port is exposed to the attacker's network.
Prerequisites
- Network access to the Plant iT/Brewmaxx Redis database port (typically port 6379 or similar)
- Plant iT/Brewmaxx v9.60 or later running and accessible from attacker's network segment
remotely exploitableno authentication requiredlow complexityactively exploited (KEV)extremely high EPSS score (94.4%)no patch availableaffects control system operations
Exploitability
Actively exploited — confirmed by CISA KEV
Affected products (1)
ProductAffected VersionsFix Status
Plant iT/Brewmaxx v9.60 and above≥ 9.60No fix (EOL)
Remediation & Mitigation
0/7
Do now
0/4HARDENINGIsolate Plant iT/Brewmaxx system behind a firewall and restrict network access from business networks and the Internet
WORKAROUNDBlock all inbound connections to the Redis database port (6379 and related ports) from untrusted networks at the firewall
HARDENINGIf remote access to Plant iT is required, configure a VPN with strong authentication and route only authorized traffic through it
WORKAROUNDDisable or restrict remote access to Plant iT until a patch is available
Schedule — requires maintenance window
0/3Patching may require device reboot — plan for process interruption
HARDENINGImplement network segmentation to place Plant iT/Brewmaxx on a dedicated control network separate from business systems
HOTFIXMonitor Schneider Electric security bulletins for a firmware or software patch that addresses the underlying Redis vulnerability
HARDENINGRestrict physical access to the Plant iT/Brewmaxx hardware and ensure no unauthorized personnel can connect devices or change settings
CVEs (1)
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