CVE-2023-30261
📋 TL;DR
CVE-2023-30261 is a critical command injection vulnerability in OpenWB charging station management software that allows remote attackers to execute arbitrary commands on affected systems. Attackers can exploit this via crafted GET requests without authentication, potentially gaining full control of the system. This affects OpenWB versions 1.6 and 1.7 installations exposed to network access.
💻 Affected Systems
- OpenWB
📦 What is this software?
Openwb by Openwb
Openwb by Openwb
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands with root privileges, install malware, pivot to internal networks, or disrupt charging operations.
Likely Case
Remote code execution leading to system takeover, data theft, or ransomware deployment on vulnerable OpenWB installations.
If Mitigated
Limited impact if proper network segmentation and access controls prevent external exploitation attempts.
🎯 Exploit Status
Public proof-of-concept code exists showing exploitation via simple HTTP GET requests. The low complexity makes weaponization highly likely.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in OpenWB version 1.8 and later
Vendor Advisory: https://github.com/snaptec/openWB/issues/2672
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Update OpenWB to version 1.8 or later using the official update mechanism. 3. Restart the OpenWB system. 4. Verify the update completed successfully.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to OpenWB web interface using firewall rules
iptables -A INPUT -p tcp --dport 80 -s trusted_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
Web Server Configuration
allConfigure web server to restrict access to vulnerable endpoints
Add access control rules to web server configuration for OpenWB paths
🧯 If You Can't Patch
- Isolate OpenWB systems on separate network segments with strict firewall rules
- Implement web application firewall (WAF) rules to block command injection patterns
🔍 How to Verify
Check if Vulnerable:
Check OpenWB version via web interface or system logs. Versions 1.6 or 1.7 are vulnerable.Check Version:
Check web interface or system logs for version information, or examine /var/www/html/openWB/version.txt if availableVerify Fix Applied:
Verify OpenWB version is 1.8 or later and test that command injection attempts are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Suspicious GET requests with shell metacharacters
- Unexpected process creation from web server
Network Indicators:
- HTTP requests containing shell commands or special characters
- Unusual outbound connections from OpenWB system
SIEM Query:
source="openwb" AND (http_method="GET" AND (url="*;*" OR url="*|*" OR url="*`*" OR url="*$(*"))