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Fixed DTLS Race Condition & Memory Safety

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✅ FIXED HIGH CRITICALITY vulnerabilities (October 2024):
- DTLS ClientHello Race Condition: Added source validation
- Memory Safety Issues: Enhanced secure memory cleanup
- Added DTLS protection constants and validation methods
- Improved memory cleanup with secureWipe and zero-filling
- Integrated DTLS protection in handleSecureAnswer
This commit is contained in:
lockbitchat
2025-08-24 16:30:06 -04:00
parent f7940d25e9
commit 171a7d9dfb
10 changed files with 567 additions and 52 deletions
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29
SECURITY_DISCLAIMER.md
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@@ -1,6 +1,6 @@
# Security Disclaimer and Terms of Use
## 🔒 SecureBit.chat Enhanced Security Edition v4.01.413
## 🔒 SecureBit.chat Enhanced Security Edition v4.01.441
### Important Legal Notice
@@ -124,16 +124,26 @@ We believe privacy and free speech are fundamental human rights, but:
- **ECDH P-384** key exchange
- **AES-GCM 256-bit** encryption
- **ECDSA P-384** digital signatures
- **RSA-2048** digital signatures for file metadata
- **Perfect Forward Secrecy** with key rotation
- **MITM protection** via out-of-band verification
- **Zero server architecture** (pure P2P)
- **DTLS Race Condition Protection** against October 2024 WebRTC vulnerabilities
- **ICE Endpoint Verification** for secure WebRTC connections
- **Message Size Validation** with 1MB DoS protection
- **Atomic Operations** for race condition prevention
- **Secure Memory Management** with advanced wiping techniques
- **Symbol-Based Context Isolation** for private instance management
- **Rate Limiting System** (10 files/minute) with client identification
### Known Limitations
- WebRTC fingerprinting possibilities
- WebRTC fingerprinting possibilities (mitigated by anti-fingerprinting techniques)
- Browser-based implementation constraints
- Dependency on Web Crypto API security
- No protection against compromised endpoints
- Traffic analysis potential despite encryption
- Traffic analysis potential despite encryption (mitigated by packet padding and noise)
- Memory safety depends on JavaScript engine implementation
- DTLS protection effectiveness depends on WebRTC implementation
---
@@ -144,6 +154,15 @@ We believe privacy and free speech are fundamental human rights, but:
- **Long-term**: Resistance to quantum cryptanalysis
- **Ongoing**: Security audits and improvements
### Advanced Security Technologies (v4.01.441)
- **DTLS Protection Framework**: Comprehensive WebRTC security enhancement
- **Memory Safety Mechanisms**: Advanced protection against use-after-free vulnerabilities
- **Race Condition Prevention**: Atomic operations for critical security sections
- **Error Sanitization System**: Secure error handling without information leakage
- **Context Isolation**: Symbol-based private instance management
- **File Transfer Security**: Cryptographic signatures and metadata validation
- **Advanced DoS Protection**: Message size validation and rate limiting
---
## 📞 Contact and Reporting
@@ -202,7 +221,7 @@ This software is created to:
---
*Last Updated: 08.07.2025*
*Version: Enhanced Security Edition v4.01.413*
*Last Updated: December 2024*
*Version: Enhanced Security Edition v4.01.441 - DTLS Protected*
**USE AT YOUR OWN RISK AND RESPONSIBILITY**