CVE-2025-70043
📋 TL;DR
This vulnerability in Ayms node-To master branch disables TLS/SSL certificate validation, allowing man-in-the-middle attackers to intercept and manipulate encrypted communications. Any application using this library with default settings is vulnerable to credential theft and data interception.
💻 Affected Systems
- Ayms node-To
⚠️ 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 encrypted communications, allowing attackers to steal authentication tokens, credentials, financial data, and inject malicious content into application traffic.
Likely Case
Credential harvesting and session hijacking for applications that transmit sensitive data over TLS connections.
If Mitigated
Limited impact if proper network segmentation and certificate pinning are implemented, though risk remains for exposed services.
🎯 Exploit Status
Exploitation requires man-in-the-middle position but is trivial once network access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://github.com/Ayms/node-To
Restart Required: Yes
Instructions:
1. Check the GitHub repository for updates. 2. Modify the source code to set 'rejectUnauthorized': true in TLS socket options. 3. Rebuild and redeploy the application.
🔧 Temporary Workarounds
Manual Code Fix
allModify the application code to enable certificate validation
Find and replace 'rejectUnauthorized': false with 'rejectUnauthorized': true in all TLS/SSL configuration sections
Environment Variable Override
allSet NODE_TLS_REJECT_UNAUTHORIZED environment variable to enforce validation
export NODE_TLS_REJECT_UNAUTHORIZED=1
set NODE_TLS_REJECT_UNAUTHORIZED=1 (Windows)
🧯 If You Can't Patch
- Implement strict network segmentation to limit exposure
- Deploy certificate pinning at the application or network layer
🔍 How to Verify
Check if Vulnerable:
Search source code for 'rejectUnauthorized': false in TLS/SSL configuration filesCheck Version:
Check package.json or repository commit history for node-To versionVerify Fix Applied:
Verify 'rejectUnauthorized': true is set and test TLS connections fail with invalid certificates📡 Detection & Monitoring
Log Indicators:
- TLS handshake failures with self-signed certificates
- Unexpected certificate validation bypass logs
Network Indicators:
- Unencrypted traffic where TLS expected
- Successful connections with invalid certificates
SIEM Query:
source="application.logs" AND "rejectUnauthorized.*false" OR "certificate validation disabled"