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IniNet Solutions embeddedWebServer Cleartext Storage Vulnerability

Monitor4.3ICS-CERT ICSA-15-293-01Jul 23, 2015
Attack VectorPhysical
Auth RequiredLow
ComplexityLow
User InteractionNone needed
Summary

IniNet Solutions eWebServer for Windows CE stores authentication credentials and sensitive configuration data in cleartext, allowing an attacker with access to device storage to extract plaintext passwords and configuration details. This affects eWebServer versions prior to 2.02. The vulnerability is classified as CWE-312 (cleartext storage of sensitive information).

What this means
What could happen
An attacker with physical or network access to the embedded web server could extract sensitive credentials and configuration data stored in cleartext, compromising device access and enabling unauthorized control of connected industrial equipment.
Who's at risk
This vulnerability affects IniNet Solutions eWebServer for Windows CE devices used in industrial control and remote management applications. Organizations running legacy Windows CE-based controllers or gateways with embedded web interfaces should assess their environment. This is most relevant to utilities, manufacturing facilities, and water treatment plants that may be using older embedded devices from the mid-2000s onwards.
How it could be exploited
An attacker with local or network access to the eWebServer can read stored credentials and configuration files in plaintext from the device's storage or memory, then use those credentials to gain unauthorized administrative access to the web interface or other connected systems.
Prerequisites
  • Physical or network access to the eWebServer on Windows CE device
  • Ability to access device storage or extract configuration/credential files
  • Knowledge of where credentials are stored on the system
no patch availablecleartext credential storagelegacy end-of-life platform
Exploitability
Low exploit probability (EPSS 0.1%)
Affected products (1)
ProductAffected VersionsFix Status
eWebServer for Windows CE: <2.02<2.02No fix (EOL)
Remediation & Mitigation
0/5
Do now
0/3
HARDENINGImplement network segmentation to restrict access to eWebServer to authorized engineering workstations only; use a firewall to block external access to the web interface port
WORKAROUNDIf possible, disable the eWebServer web interface and manage the device through alternative secure methods (e.g., vendor-provided secure protocols or direct USB connection)
HARDENINGChange all default and stored credentials on the device and any systems accessible via eWebServer to strong, unique passwords
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HARDENINGAudit all accounts and access logs on the eWebServer for signs of unauthorized access
Mitigations - no patch available
0/1
eWebServer for Windows CE: <2.02 has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGPlan long-term replacement of affected eWebServer for Windows CE devices with newer hardware running supported, patchable operating systems
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