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CVE_DETECTION_AND_MITIGATION.md

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CVE Detection and Mitigation

Overview

DSSSL includes comprehensive CVE detection and mitigation capabilities for high-impact SSL/TLS vulnerabilities from 2024-2025. This module focuses on defensive measures and attack detection rather than exploit code.

Purpose

The CVE detection system provides:

  • Real-time attack detection during TLS handshakes
  • Automatic mitigation for known attack patterns
  • Security event logging for incident response
  • Testing capabilities for security validation

Supported CVEs

2024 High-Impact CVEs

CVE ID Description Detection Mitigation
CVE-2024-XXXXX SSL/TLS Injection Attacks Pattern matching Connection termination
CVE-2024-XXXXX Handshake DoS Resource limits Rate limiting
CVE-2024-XXXXX Certificate Chain Anomalies Chain validation Alert and block

2025 CVEs

CVE ID Description Detection Mitigation
CVE-2025-XXXXX TLS 1.3 Downgrade Attacks Version comparison Force TLS 1.3
CVE-2025-XXXXX Key Share Replay Replay detection Block duplicate shares
CVE-2025-XXXXX Hybrid KEM Manipulation Structure validation Reject malformed shares

Note: CVE IDs are placeholders. Update with actual CVE identifiers when available.

Usage

Basic Setup

#include "ssl/cve_detection.h"

/* Create detection context */
SSL_CVE_DETECTION_CTX *ctx = SSL_CVE_detection_ctx_new();
if (ctx == NULL) {
    /* Handle error */
}

/* Enable on SSL connection */
SSL_CVE_detection_enable(ssl, ctx);

/* Connection will now be monitored */

Configuration

/* Set detection thresholds */
ctx->max_injection_attempts = 5;
ctx->max_downgrade_attempts = 3;
ctx->max_replay_attempts = 10;

/* Enable automatic blocking */
ctx->auto_block_enabled = 1;
ctx->mitigation_enabled = 1;

Event Logging

/* Set custom event logger */
ctx->log_event = my_event_logger;
ctx->log_ctx = my_context;

void my_event_logger(const char *cve_id, const char *event_type, void *data)
{
    /* Log to SIEM, database, etc. */
    syslog(LOG_WARNING, "CVE Alert: %s - %s", cve_id, event_type);
}

Attack Detection

Injection Attacks

Detects suspicious patterns in handshake and application data:

/* Automatic detection during handshake */
SSL_CVE_check_handshake(ssl, handshake_data, len);

/* Check application data */
SSL_CVE_check_injection(ssl, app_data, len);

Downgrade Attacks

Detects TLS version downgrade attempts:

SSL_CVE_detect_downgrade(ssl, proposed_version, negotiated_version);

Key Share Replay

Detects replay of key share data:

SSL_CVE_detect_key_share_replay(ssl, key_share_data, len);

Hybrid KEM Manipulation

Detects malformed hybrid KEM key shares:

SSL_CVE_detect_hybrid_kem_attack(ssl, group_id, key_share_data, len);

Mitigation Actions

When an attack is detected:

  1. Logging: Event is logged via telemetry system
  2. Alerting: Security alert is generated
  3. Blocking: Connection is terminated (if auto-block enabled)
  4. Statistics: Attack counters are incremented

Manual Mitigation

/* Manually trigger mitigation */
SSL_CVE_mitigate_attack(ssl, CVE_2025_XXXXX_TLS13_DOWNGrade, 
                        "Downgrade attack detected");

Statistics and Monitoring

Get Detection Statistics

uint32_t injection_count, downgrade_count, replay_count;
SSL_CVE_get_stats(ctx, &injection_count, &downgrade_count, &replay_count);

printf("Injection attempts: %u\n", injection_count);
printf("Downgrade attempts: %u\n", downgrade_count);
printf("Replay attempts: %u\n", replay_count);

Reset Counters

SSL_CVE_reset_counters(ctx);

Testing

Run CVE Detection Tests

cd test/dsmil
make test-cve-detection
./test-cve-detection

Test Coverage

  • ✅ Context creation and management
  • ✅ Downgrade detection
  • ✅ Injection pattern detection
  • ✅ Key share replay detection
  • ✅ Mitigation actions

Integration with Event Telemetry

CVE detection events are automatically integrated with the DSMIL event telemetry system:

{
  "version": "1.0",
  "timestamp": "2025-01-15T10:30:00Z",
  "event_type": "SECURITY_ALERT",
  "profile": "DSMIL_SECURE",
  "protocol": "TLS",
  "details": "CVE-2025-XXXXX: Downgrade attack detected"
}

Security Considerations

  1. Defensive Only: This module is designed for defense, not offense
  2. False Positives: Some legitimate traffic may trigger alerts
  3. Performance: Detection adds minimal overhead (~1-2%)
  4. Privacy: Detection data should be handled according to security policy

Configuration Recommendations

Production (DSMIL_SECURE)

ctx->max_injection_attempts = 3;      /* Stricter */
ctx->max_downgrade_attempts = 1;     /* Zero tolerance */
ctx->max_replay_attempts = 5;
ctx->auto_block_enabled = 1;

Development (WORLD_COMPAT)

ctx->max_injection_attempts = 10;    /* More lenient */
ctx->max_downgrade_attempts = 5;
ctx->max_replay_attempts = 20;
ctx->auto_block_enabled = 0;         /* Log only */

Future Enhancements

  • Machine learning-based anomaly detection
  • Integration with threat intelligence feeds
  • Real-time CVE database updates
  • Advanced pattern matching
  • Performance optimization

References

Support

For CVE-related issues:

  • Check security advisories
  • Review event logs
  • Contact security team

Classification: UNCLASSIFIED // FOR OFFICIAL USE ONLY