CVE-2024-9055
📋 TL;DR
Silicon Labs Series 2 devices have insufficient DPA countermeasures that fail to periodically reseed cryptographic operations, potentially allowing attackers to extract secret keys through differential power analysis attacks over time. This affects IoT devices and embedded systems using these chips for secure operations.
💻 Affected Systems
- Silicon Labs Series 2 devices
⚠️ 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 cryptographic keys leading to decryption of sensitive data, device impersonation, or unauthorized access to secure systems.
Likely Case
Gradual key extraction over multiple operations allowing eventual decryption of protected communications or data.
If Mitigated
Limited impact if keys are rotated frequently or devices operate in physically secure environments.
🎯 Exploit Status
Requires physical access or ability to monitor power consumption during cryptographic operations
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific firmware versions
Vendor Advisory: https://community.silabs.com/069Vm00000LJMlfIAH
Restart Required: Yes
Instructions:
1. Check current firmware version. 2. Download updated firmware from Silicon Labs. 3. Flash devices with patched firmware. 4. Verify successful update.
🔧 Temporary Workarounds
Physical security controls
allImplement physical security measures to prevent power analysis attacks
Key rotation
allFrequently rotate cryptographic keys to limit exposure window
🧯 If You Can't Patch
- Deploy devices in physically secure locations with controlled access
- Implement network segmentation to limit exposure of affected devices
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against patched versions in vendor advisoryCheck Version:
Device-specific command to check firmware version (consult device documentation)Verify Fix Applied:
Confirm firmware version matches patched version from vendor📡 Detection & Monitoring
Log Indicators:
- Unusual device behavior or cryptographic operation failures
Network Indicators:
- Anomalous cryptographic protocol traffic patterns
SIEM Query:
Not applicable - primarily physical attack vector