CVE-2024-35246
📋 TL;DR
This vulnerability allows attackers to cause denial-of-service by flooding affected systems with repeated packets. It affects industrial control systems and related software that process network communications. Organizations using vulnerable ICS/SCADA systems are at risk.
💻 Affected Systems
- Industrial control systems and SCADA software from multiple vendors
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system unavailability leading to operational disruption, production downtime, and potential safety impacts in industrial environments.
Likely Case
Service degradation or temporary unavailability requiring system restart and operational impact.
If Mitigated
Minimal impact with proper network segmentation, rate limiting, and monitoring in place.
🎯 Exploit Status
Simple packet flooding attack requiring no authentication. Attack tools for DoS are widely available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Vendor-specific - check individual vendor updates
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-24-172-03
Restart Required: Yes
Instructions:
1. Identify affected systems using vendor documentation. 2. Apply vendor-provided patches or updates. 3. Restart affected systems. 4. Verify patch application.
🔧 Temporary Workarounds
Network Segmentation
allIsolate ICS systems from untrusted networks using firewalls and VLANs
Rate Limiting
allConfigure network devices to limit packet rates to vulnerable systems
🧯 If You Can't Patch
- Implement strict network access controls and segmentation
- Deploy intrusion prevention systems with DoS protection capabilities
🔍 How to Verify
Check if Vulnerable:
Check system versions against vendor-specific vulnerability lists in ICSA-24-172-03Check Version:
Vendor-specific - consult system documentationVerify Fix Applied:
Verify patch version installation and test system resilience to packet flooding📡 Detection & Monitoring
Log Indicators:
- Unusually high packet rates
- System resource exhaustion alerts
- Connection flood warnings
Network Indicators:
- Spike in incoming packets to ICS ports
- Abnormal traffic patterns from single sources
SIEM Query:
source_ip_count > threshold AND dest_port IN (ics_ports) WITHIN 1m