CVE-2024-23969
📋 TL;DR
This is a critical buffer overflow vulnerability in ChargePoint Home Flex charging stations that allows attackers on the same network to execute arbitrary code with root privileges without authentication. The flaw exists in the wlanchnllst function due to insufficient input validation, enabling remote code execution. All ChargePoint Home Flex charging stations with vulnerable firmware are affected.
💻 Affected Systems
- ChargePoint Home Flex charging stations
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain complete root control over charging stations, potentially enabling them to disrupt charging operations, steal user data, or use the device as a foothold into other network systems.
Likely Case
Attackers execute arbitrary code to disrupt charging operations, potentially causing denial of service or manipulating charging behavior.
If Mitigated
With proper network segmentation and access controls, impact is limited to the isolated charging station network segment.
🎯 Exploit Status
Exploitation requires network access but no authentication. Buffer overflow exploitation typically requires some technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check ChargePoint firmware updates
Vendor Advisory: https://www.zerodayinitiative.com/advisories/ZDI-24-1051/
Restart Required: Yes
Instructions:
1. Check ChargePoint support portal for firmware updates. 2. Download latest firmware. 3. Apply update through ChargePoint management interface. 4. Reboot charging station.
🔧 Temporary Workarounds
Network Segmentation
allIsolate charging stations on separate VLAN with strict access controls
Access Control Lists
allImplement network ACLs to restrict access to charging station management interfaces
🧯 If You Can't Patch
- Physically isolate charging stations from other critical networks
- Implement strict firewall rules allowing only necessary traffic to charging stations
🔍 How to Verify
Check if Vulnerable:
Check firmware version in ChargePoint management interface and compare against patched versions from vendor advisoryCheck Version:
Check through ChargePoint mobile app or web interface for firmware versionVerify Fix Applied:
Confirm firmware version has been updated to patched version and test network connectivity restrictions📡 Detection & Monitoring
Log Indicators:
- Unusual network connections to charging station management ports
- Multiple failed connection attempts followed by successful exploit
Network Indicators:
- Unusual traffic patterns to charging station on non-standard ports
- Buffer overflow patterns in network traffic
SIEM Query:
source_ip IN (charging_station_ips) AND (port=80 OR port=443) AND payload_size > threshold