CVE-2024-21740
📋 TL;DR
This vulnerability involves incorrect access control in Artery AT32F415CBT7 and AT32F421C8T7 microcontroller devices, allowing unauthorized access to protected memory regions. It affects systems using these specific microcontroller chips in embedded applications.
💻 Affected Systems
- Artery AT32F415CBT7 microcontroller
- Artery AT32F421C8T7 microcontroller
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of device security, allowing extraction of cryptographic keys, firmware, and sensitive data stored in protected memory regions.
Likely Case
Unauthorized access to sensitive configuration data and potential firmware extraction for reverse engineering.
If Mitigated
Limited impact if proper physical security controls prevent physical access to devices.
🎯 Exploit Status
Exploitation requires physical access to the device and specialized hardware/software tools for microcontroller debugging/programming.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: N/A
Vendor Advisory: N/A
Restart Required: No
Instructions:
No official patch available. This is a hardware-level vulnerability requiring chip replacement or redesign.
🔧 Temporary Workarounds
Physical Security Controls
allImplement strong physical security measures to prevent unauthorized physical access to devices containing these microcontrollers.
Firmware Encryption
allImplement firmware encryption and secure boot mechanisms to protect sensitive data even if memory is accessed.
🧯 If You Can't Patch
- Implement tamper-evident packaging and physical security monitoring for devices
- Consider replacing affected hardware with updated versions if available from manufacturer
🔍 How to Verify
Check if Vulnerable:
Check device specifications or markings to confirm use of AT32F415CBT7 or AT32F421C8T7 microcontrollersCheck Version:
N/A - Hardware-level vulnerabilityVerify Fix Applied:
Verify with manufacturer if updated hardware versions are available that address this vulnerability📡 Detection & Monitoring
Log Indicators:
- Physical access logs showing unauthorized device access
- Debug port access attempts
Network Indicators:
- N/A - This is a physical/hardware vulnerability
SIEM Query:
N/A - Physical security monitoring required rather than network/SIEM detection