CVE-2023-48264
📋 TL;DR
This vulnerability in Bosch products allows unauthenticated remote attackers to cause denial-of-service or potentially execute arbitrary code by sending specially crafted network requests. It affects Bosch Rexroth ctrlX CORE and ctrlX COREvirtual devices running vulnerable firmware versions.
💻 Affected Systems
- Bosch Rexroth ctrlX CORE
- Bosch Rexroth ctrlX COREvirtual
📦 What is this software?
Nexo Os by Bosch
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or persistent backdoor installation.
Likely Case
Denial-of-service causing device unavailability and service disruption.
If Mitigated
Limited to denial-of-service with proper network segmentation and access controls.
🎯 Exploit Status
CWE-121 indicates stack-based buffer overflow, typically requiring minimal technical skill to exploit once details are known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware version 1.28.0 or later
Vendor Advisory: https://psirt.bosch.com/security-advisories/BOSCH-SA-711465.html
Restart Required: Yes
Instructions:
1. Download firmware 1.28.0+ from Bosch Rexroth support portal. 2. Backup device configuration. 3. Apply firmware update via ctrlX OS web interface or CLI. 4. Reboot device. 5. Verify update completed successfully.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected devices from untrusted networks using firewalls or VLANs.
Access Control Lists
linuxRestrict network access to trusted IP addresses only.
# Example: Configure firewall to allow only specific IPs
# iptables -A INPUT -s 192.168.1.0/24 -p tcp --dport [PORT] -j ACCEPT
# iptables -A INPUT -p tcp --dport [PORT] -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate devices from untrusted networks.
- Deploy intrusion detection/prevention systems to monitor for exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check firmware version in ctrlX OS web interface under System > About, or run 'cat /etc/ctrlx-version' on device CLI.Check Version:
cat /etc/ctrlx-versionVerify Fix Applied:
Confirm firmware version is 1.28.0 or higher and test network connectivity to verify service availability.📡 Detection & Monitoring
Log Indicators:
- Unexpected connection attempts to affected services
- Process crashes or restarts
- Memory allocation errors in system logs
Network Indicators:
- Unusual network traffic patterns to device ports
- Malformed packets targeting vulnerable services
SIEM Query:
source="device_logs" AND ("connection refused" OR "segmentation fault" OR "buffer overflow")