CVE-2022-24314
📋 TL;DR
CVE-2022-24314 is an out-of-bounds read vulnerability in Schneider Electric's Interactive Graphical SCADA System Data Server that could cause memory leaks and denial of service. Attackers can exploit this by repeatedly sending specially crafted messages to vulnerable systems. Organizations using affected versions of this SCADA software are at risk.
💻 Affected Systems
- Interactive Graphical SCADA System Data Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash leading to extended SCADA system unavailability, disrupting industrial operations and potentially causing safety incidents.
Likely Case
Service degradation or temporary denial of service requiring system restart, impacting monitoring and control capabilities.
If Mitigated
Minimal impact with proper network segmentation and monitoring allowing quick detection and response.
🎯 Exploit Status
Exploitation requires sending specially crafted messages to the vulnerable service, which typically listens on specific ports.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after V15.0.0.22020
Vendor Advisory: https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-039-01
Restart Required: Yes
Instructions:
1. Download the patched version from Schneider Electric's website. 2. Backup current configuration and data. 3. Install the update following vendor instructions. 4. Restart the Data Server service. 5. Verify functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate SCADA systems from untrusted networks using firewalls and VLANs.
Access Control Lists
windowsRestrict network access to SCADA Data Server ports to only authorized systems.
# Example firewall rule (Windows): New-NetFirewallRule -DisplayName "Block SCADA Ports" -Direction Inbound -LocalPort 12345 -Protocol TCP -Action Block
🧯 If You Can't Patch
- Implement strict network segmentation to isolate SCADA systems from untrusted networks
- Deploy intrusion detection systems to monitor for anomalous message patterns to the Data Server
🔍 How to Verify
Check if Vulnerable:
Check the Data Server version in the software interface or installation directory. Versions V15.0.0.22020 and earlier are vulnerable.Check Version:
Check the software version in the SCADA system interface or installation properties.Verify Fix Applied:
Verify the installed version is newer than V15.0.0.22020 and test system functionality after patch installation.📡 Detection & Monitoring
Log Indicators:
- Unusual connection attempts to Data Server ports
- Multiple malformed message errors in SCADA logs
- Service restart events following connection attempts
Network Indicators:
- Unusual traffic patterns to SCADA Data Server ports (typically TCP ports used by the software)
- Repeated connection attempts with malformed packets
SIEM Query:
source="scada_logs" AND (event_type="connection_error" OR event_type="malformed_message") AND destination_port="[SCADA_PORT]"