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Schneider Electric IGSS Buffer Overflow

Act NowICS-CERT ICSA-13-018-01Oct 22, 2013
Summary

Schneider Electric IGSS contains a buffer overflow vulnerability (CWE-121) that affects all versions of the application. An attacker can send malformed input to cause memory corruption, potentially leading to application crashes or arbitrary code execution. No patch is currently available from the vendor.

What this means
What could happen
A buffer overflow in Schneider Electric IGSS allows an attacker to crash the application or potentially execute arbitrary code, disrupting monitoring and control functions at the facility.
Who's at risk
Energy sector facilities using Schneider Electric IGSS for process monitoring and control, including utilities and power plants that rely on IGSS for real-time operational visibility and industrial control system management.
How it could be exploited
An attacker sends a specially crafted input to the IGSS application that exceeds buffer boundaries, causing memory corruption. This could allow code execution or denial of service depending on how the application handles the overflow.
Prerequisites
  • Network access to the IGSS application port
  • Ability to send malformed input to the application
  • IGSS application listening on the network or locally accessible
High EPSS score (61.4%)No patch availableBuffer overflow can lead to code executionAffects all versions
Exploitability
High exploit probability (EPSS 61.4%)
Affected products (1)
ProductAffected VersionsFix Status
IGSS application: vers:all/*All versionsNo fix (EOL)
Remediation & Mitigation
0/4
Do now
0/2
HARDENINGIsolate IGSS systems on a segmented network with strict firewall rules to limit access to authorized engineering and operations staff only
WORKAROUNDDisable or restrict network access to IGSS if it is not required for remote operations
Schedule — requires maintenance window
0/2

Patching may require device reboot — plan for process interruption

HARDENINGMonitor IGSS application logs and network traffic for suspicious input patterns or unexpected connection attempts
HOTFIXContact Schneider Electric to determine if an updated version or workaround is available for your specific IGSS version
View full CISA ICS-CERT advisory
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Schneider Electric IGSS Buffer Overflow - OTPulse