CVE-2025-35003
📋 TL;DR
This CVE describes memory buffer and stack-based buffer overflow vulnerabilities in Apache NuttX RTOS's Bluetooth HCI and UART components. Attackers can cause system crashes, denial of service, or execute arbitrary code by sending malicious Bluetooth packets. All NuttX users with Bluetooth functionality enabled are affected.
💻 Affected Systems
- Apache NuttX RTOS
📦 What is this software?
Nuttx by Apache
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with full system compromise, allowing attackers to take complete control of affected devices.
Likely Case
System crashes and denial of service disrupting device functionality, with potential for limited code execution.
If Mitigated
Limited impact if Bluetooth stack is disabled or devices are isolated from untrusted Bluetooth sources.
🎯 Exploit Status
Exploitation requires sending malicious Bluetooth packets to vulnerable devices. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 12.9.0
Vendor Advisory: https://lists.apache.org/thread/k4xzz3jhkx48zxw9vwmqrmm4hmg78vsj
Restart Required: Yes
Instructions:
1. Download NuttX version 12.9.0 or later from official sources
2. Replace vulnerable NuttX installation with patched version
3. Rebuild and redeploy affected firmware/software
4. Restart affected devices
🔧 Temporary Workarounds
Disable Bluetooth functionality
allTemporarily disable Bluetooth HCI/UART components if not required
Modify NuttX configuration to disable CONFIG_BLUETOOTH and related Bluetooth options
Network segmentation
allIsolate Bluetooth-enabled devices from untrusted networks
🧯 If You Can't Patch
- Disable Bluetooth functionality completely in device configuration
- Implement network controls to block Bluetooth traffic from untrusted sources
🔍 How to Verify
Check if Vulnerable:
Check NuttX version and verify Bluetooth functionality is enabled. Vulnerable if version is between 7.25 and 12.9.0 (exclusive) with Bluetooth enabled.Check Version:
Check NuttX build configuration or firmware version information specific to your implementationVerify Fix Applied:
Verify NuttX version is 12.9.0 or later and confirm Bluetooth functionality works without crashes from test packets.📡 Detection & Monitoring
Log Indicators:
- Unexpected system crashes or reboots
- Bluetooth stack error messages
- Memory corruption warnings in system logs
Network Indicators:
- Unusual Bluetooth packet patterns
- Malformed Bluetooth HCI packets
- Excessive Bluetooth connection attempts
SIEM Query:
Search for: 'nuttx crash' OR 'bluetooth stack error' OR 'memory corruption' in device logs