CVE-2024-3742
📋 TL;DR
Electrolink transmitters store credentials in plain text without encryption, allowing attackers who gain access to the system to read authentication credentials. This affects organizations using vulnerable Electrolink transmitter devices in industrial control systems.
💻 Affected Systems
- Electrolink transmitters
⚠️ 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
Attackers obtain administrative credentials and gain full control of industrial control systems, potentially disrupting critical infrastructure operations or causing physical damage.
Likely Case
Attackers with local access extract credentials and use them to access the transmitter configuration, modify settings, or disrupt communications.
If Mitigated
With proper network segmentation and access controls, attackers cannot reach the vulnerable systems even if credentials are exposed.
🎯 Exploit Status
Exploitation requires access to the device's file system or storage where credentials are stored. No authentication bypass is needed once the attacker has access to the credential storage location.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check with vendor for specific firmware versions
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-24-107-02
Restart Required: Yes
Instructions:
1. Contact Electrolink vendor for patched firmware. 2. Backup current configuration. 3. Apply firmware update following vendor instructions. 4. Restart device. 5. Verify credentials are now encrypted.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Electrolink transmitters in separate network segments with strict access controls
Credential Rotation
allRegularly change credentials to limit exposure window if credentials are compromised
🧯 If You Can't Patch
- Implement strict physical and network access controls to prevent unauthorized access to devices
- Monitor for unusual access patterns or configuration changes to transmitters
🔍 How to Verify
Check if Vulnerable:
Check if credentials are stored in plain text files on the transmitter. Review device configuration storage locations.Check Version:
Check device firmware version through vendor-specific management interface or consoleVerify Fix Applied:
After patching, verify that credentials are no longer visible in plain text and are stored encrypted.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access to configuration files
- Multiple failed login attempts followed by successful login
Network Indicators:
- Unusual network traffic to transmitter management interfaces
- Access from unauthorized IP addresses
SIEM Query:
source="transmitter_logs" AND (event="config_access" OR event="credential_access")