Fuji Electric Alpha5 Smart Loader (Update A)
Act Now9.8ICS-CERT ICSA-18-270-02Sep 27, 2018
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary
The Fuji Electric Alpha5 Smart Loader software (version 3.7 and earlier) contains buffer overflow and memory corruption vulnerabilities (CWE-120, CWE-122) that allow remote code execution without authentication. Successful exploitation enables arbitrary command execution on the device. Fuji Electric has released a patched version available through their download portal (login required). Until patching is completed, network isolation and firewall controls are critical to prevent exploitation.
What this means
What could happen
An attacker could execute arbitrary code on the Alpha5 Smart Loader, potentially gaining full control of the device and any industrial processes it manages. This could result in unauthorized changes to process parameters, equipment shutdown, or unsafe operating conditions.
Who's at risk
Energy sector organizations using Fuji Electric Alpha5 Smart Loader software (version 3.7 or earlier) in control system environments. This loader is commonly used to program and configure industrial controllers and process automation devices. Any facility where this software manages critical infrastructure or safety systems is at risk.
How it could be exploited
An attacker with network access to the Alpha5 Smart Loader can send a specially crafted network request to exploit a buffer overflow or memory corruption vulnerability (CWE-120, CWE-122) and execute arbitrary code on the device. No authentication or user interaction is required.
Prerequisites
- Network access (any protocol) to the Alpha5 Smart Loader on port(s) the application uses
- No authentication required
- Device must be running firmware version 3.7 or earlier
Remotely exploitableNo authentication requiredLow complexity attackNo patch currently availableCritical severity (CVSS 9.8)
Exploitability
Low exploit probability (EPSS 0.7%)
Affected products (1)
ProductAffected VersionsFix Status
Alpha5 Smart Loader:≤ 3.7No fix (EOL)
Remediation & Mitigation
0/4
Do now
0/3HARDENINGIsolate the Alpha5 Smart Loader from the business network and place it behind a firewall; restrict inbound network access to only authorized engineering and monitoring systems
HARDENINGIf remote access is required, implement a VPN or secure jump host to control access to the device, rather than exposing it directly to the network
HARDENINGPerform network segmentation to ensure the device is not accessible from the Internet or untrusted networks
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXUpdate Alpha5 Smart Loader to a patched version available from Fuji Electric (login required at https://felib.fujielectric.co.jp/download/login.htm?site=global&lang=en)
CVEs (2)
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