Sinapsi Devices Vulnerabilities
Act NowICS-CERT ICSA-12-325-01Aug 24, 2012
Summary
Sinapsi eSolar devices contain multiple vulnerabilities including SQL injection (CWE-89), hardcoded credentials (CWE-259), command injection (CWE-78), and broken authentication (CWE-287). The affected versions are eSolar, eSolar DUO, and eSolar Light versions prior to 2.0.2870_xxx_2.2.12. These vulnerabilities allow unauthenticated remote attackers to inject malicious commands, execute arbitrary code, and bypass authentication controls on affected devices.
What this means
What could happen
An attacker could execute arbitrary commands on eSolar control systems, potentially altering solar generation setpoints, disabling monitoring, or shutting down inverter operations. The combination of hardcoded credentials and command injection creates a direct path to operational disruption in solar energy facilities.
Who's at risk
Solar energy facility operators using Sinapsi eSolar, eSolar DUO, or eSolar Light inverter control systems should prioritize mitigation. These devices are critical to generation telemetry and power output control in utility-scale and distributed solar installations.
How it could be exploited
An attacker with network access to the eSolar device's web interface (port 80/443) can authenticate using hardcoded default credentials or bypass authentication entirely via the broken authentication weakness. Once authenticated, they can inject SQL commands in input fields to extract data or inject operating system commands that execute with device privileges, allowing modification of inverter settings or shutdown of power generation.
Prerequisites
- Network access to eSolar device's web interface (HTTP/HTTPS)
- Knowledge of hardcoded default credentials or ability to bypass authentication
- No special privileges required to trigger initial command injection
remotely exploitableno authentication required (or easily bypassed)low complexityhardcoded credentialsno patch available
Exploitability
High exploit probability (EPSS 18.3%)
Affected products (3)
3 EOL
ProductAffected VersionsFix Status
eSolar: <2.0.2870_xxx_2.2.12<2.0.2870 xxx 2.2.12No fix (EOL)
eSolar DUO: <2.0.2870_xxx_2.2.12<2.0.2870 xxx 2.2.12No fix (EOL)
eSolar Light: <2.0.2870_xxx_2.2.12<2.0.2870 xxx 2.2.12No fix (EOL)
Remediation & Mitigation
0/4
Do now
0/2HARDENINGIsolate eSolar devices on a dedicated management network segment; restrict access to the web interface from trusted engineering workstations only using firewall rules or network segmentation
WORKAROUNDDisable or change hardcoded default credentials immediately if the device interface allows password changes
Schedule — requires maintenance window
0/2Patching may require device reboot — plan for process interruption
HARDENINGDeploy a web application firewall or reverse proxy in front of eSolar devices to filter SQL injection and command injection attempts
HARDENINGMonitor eSolar device logs for suspicious authentication attempts and command execution patterns
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