CVE-2023-48262
📋 TL;DR
This vulnerability in Bosch products allows unauthenticated remote attackers to cause denial-of-service or potentially execute arbitrary code via specially crafted network requests. Affected systems include Bosch Rexroth ctrlX CORE devices running vulnerable firmware versions.
💻 Affected Systems
- Bosch Rexroth ctrlX CORE
📦 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 lateral movement within networks.
Likely Case
Denial-of-service causing service disruption and potential system crashes.
If Mitigated
Limited impact with proper network segmentation and access controls preventing exploitation attempts.
🎯 Exploit Status
The advisory mentions potential RCE but focuses on DoS. Crafting RCE payloads would require additional research.
🛠️ 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 CORE web interface or management tools. 4. Verify successful update and restore configuration if needed.
🔧 Temporary Workarounds
Network Segmentation
allIsolate ctrlX CORE devices from untrusted networks and restrict access to trusted IPs only.
Use firewall rules to block all traffic except from authorized management networks
Access Control Lists
allImplement network ACLs to limit which systems can communicate with vulnerable devices.
Configure network equipment to permit only necessary traffic to ctrlX CORE management ports
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to block all unnecessary traffic to affected devices
- Monitor network traffic for anomalous patterns and implement intrusion detection rules
🔍 How to Verify
Check if Vulnerable:
Check firmware version in ctrlX CORE web interface under System Information. If version is below 1.28.0, device is vulnerable.Check Version:
Check via web interface or use ctrlX CORE API: GET /api/v1/system/infoVerify Fix Applied:
Confirm firmware version shows 1.28.0 or higher in System Information page after update.📡 Detection & Monitoring
Log Indicators:
- Unusual network connection attempts to ctrlX CORE services
- System crash or restart logs
- Failed authentication attempts from unexpected sources
Network Indicators:
- Malformed network packets targeting ctrlX CORE ports
- Unusual traffic patterns to industrial control system devices
SIEM Query:
source="ctrlX_CORE" AND (event_type="system_crash" OR (network.dest_port IN [ctrlX_ports] AND network.src_ip NOT IN [allowed_ips]))