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Ecava IntegraXor ActiveX Buffer Overflow

Act NowICS-CERT ICSA-13-036-02Nov 9, 2013
Summary

Ecava IntegraXor SCADA Server versions 4.00_build_4250.0 and earlier contain a buffer overflow vulnerability in an ActiveX control (CWE-119). The vulnerability could allow remote code execution if an attacker can deliver malicious ActiveX content to a user running the IntegraXor client. No patch is currently available from the vendor. CISA recommends defensive measures to minimize exploitation risk.

What this means
What could happen
A buffer overflow in the IntegraXor ActiveX control could allow an attacker to execute arbitrary code on the SCADA server, potentially leading to unauthorized process control or system compromise.
Who's at risk
Electric utilities and energy sector operators running Ecava IntegraXor SCADA servers (version 4.00_build_4250.0 and earlier) should be aware of this issue. It affects organizations that rely on this legacy SCADA platform for industrial control and process monitoring.
How it could be exploited
An attacker could exploit this buffer overflow vulnerability by delivering a malicious ActiveX object (e.g., via a compromised web page or email) to a user with the IntegraXor client installed. When the client loads the malicious object, the overflow occurs in memory, allowing the attacker to execute arbitrary code with the privileges of the SCADA application.
Prerequisites
  • User with IntegraXor client installed must open or interact with malicious ActiveX content
  • IntegraXor version 4.00_build_4250.0 or earlier
  • ActiveX controls must be enabled in the client environment
Buffer overflow vulnerability (CWE-119)No patch available from vendorAffects critical SCADA infrastructure in energy sectorEPSS score 10.8% indicates non-trivial exploit probabilityActiveX-based attack vector may bypass traditional network defenses
Exploitability
High exploit probability (EPSS 10.8%)
Affected products (1)
ProductAffected VersionsFix Status
IntegraXor SCADA Server: <=4.00_build_4250.0≤ 4.00 build 4250.0No fix (EOL)
Remediation & Mitigation
0/4
Do now
0/2
HARDENINGImplement network-level controls to restrict access to IntegraXor SCADA servers from untrusted networks and limit client-to-server communication to necessary systems only
WORKAROUNDDisable ActiveX controls in web browsers and client applications where not required for operations, or restrict ActiveX execution to trusted domains only
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXApply all available security patches from Ecava for other components and monitor vendor communications for any future fixes or updates
Mitigations - no patch available
0/1
IntegraXor SCADA Server: <=4.00_build_4250.0 has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGEvaluate alternative SCADA solutions or upgrade to a newer platform with vendor support, as no patch is available for IntegraXor
View full CISA ICS-CERT advisory
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