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IBC Solar ServeMaster Source Code Vulnerability

Act Now9.8ICS-CERT ICSA-15-265-02Jun 25, 2015
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

IBC Solar ServeMaster and Danfoss TLX Pro+ devices contain hardcoded credentials and source code disclosure vulnerabilities. CWE-200 (exposure of sensitive information), CWE-256 (plaintext storage of password), and CWE-79 (improper neutralization of input during web page generation) allow attackers to extract sensitive data and potentially inject commands. Affected products are end-of-life with no vendor fixes planned.

What this means
What could happen
An attacker with network access could obtain hardcoded credentials, extract sensitive configuration data, and potentially execute arbitrary code on solar power management devices, disrupting energy production monitoring and control.
Who's at risk
Solar power system operators and facility managers using IBC Solar ServeMaster TLP+ or Danfoss TLX Pro+ devices for monitoring and controlling photovoltaic arrays and power distribution. Primary concern is for distributed solar installations, small utility-scale PV systems, and solar farms that rely on these controllers.
How it could be exploited
An attacker on the same network or with Internet access to the device's web interface could send requests to extract source code or sensitive configuration files, then use exposed credentials to gain unauthorized administrative access to the device and modify system settings or operation parameters.
Prerequisites
  • Network access to the device's web interface (port 80 or HTTPS)
  • No authentication required for initial information disclosure
  • Devices must be reachable from attacker's network segment or Internet-exposed
Remotely exploitableNo authentication requiredLow complexity attackEnd-of-life products (no vendor fix planned)Hardcoded credentialsSource code disclosureAffects power generation control systems
Exploitability
Low exploit probability (EPSS 0.5%)
Affected products (2)
2 EOL
ProductAffected VersionsFix Status
ServeMaster TLP+: vers:all/*All versionsNo fix (EOL)
Danfoss TLX Pro+: vers:all/*All versionsNo fix (EOL)
Remediation & Mitigation
0/4
Do now
0/3
HARDENINGIsolate affected ServeMaster TLP+ and TLX Pro+ devices on a dedicated network segment with network access controls; restrict inbound traffic to authorized management workstations and block direct Internet access
WORKAROUNDImplement firewall rules to deny external access to the devices' web interfaces (TCP ports 80/443); allow only internal, authenticated administrative access
HARDENINGMonitor network traffic to and from affected devices for suspicious activity; log all administrative access attempts
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXPlan replacement of end-of-life ServeMaster TLP+ and TLX Pro+ devices with supported, current-generation solar management equipment that receives vendor security updates
View full CISA ICS-CERT advisory
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