We take security seriously and provide security updates for the following versions:

Please do not report security vulnerabilities through public GitHub issues.

Instead, please report them privately via one of the following methods:

1. Go to https://github.com/vistone/fingerprint-rust/security/advisories
2. Click "New draft security advisory"
3. Provide detailed information about the vulnerability
4. Submit the advisory

Send details to the project maintainers (contact information in repository)

When reporting a vulnerability, please include:

• Description: Clear description of the vulnerability
• Impact: What can an attacker achieve?
• Reproduction: Step-by-step instructions to reproduce
• Affected versions: Which versions are vulnerable?
• Suggested fix: If you have one (optional)
• Proof of concept: Code, packet captures, etc. (if applicable)

**Summary**: Buffer overflow in packet parsing

**Impact**: Remote code execution possible with crafted IPv4 packet

**Reproduction**:
1. Create malformed IPv4 packet with IHL < 5
2. Send to application
3. Application crashes with segfault

**Affected Versions**: 2.0.0 - 2.1.0

**Suggested Fix**: Add validation: if ihl < 5 || ihl > 15 { return error }

**POC**: [attached pcap file]

• Initial Response: Within 48 hours
• Assessment: Within 7 days
• Fix Development: Depends on severity
  • Critical: 1-7 days
  • High: 7-14 days
  • Medium: 14-30 days
  • Low: 30-90 days
• Public Disclosure: After fix is available

We use CVSS v3.1 for severity assessment:

1. Develop Fix: Create patch in private branch
2. Internal Review: Security team reviews fix
3. Testing: Comprehensive testing including regression tests
4. Prepare Release: Create new version with fix
5. Coordinate Disclosure:
   • Notify reporter
   • Prepare security advisory
   • Update CHANGELOG
6. Release: Publish fixed version
7. Public Disclosure: Publish security advisory
8. Notify Users: Announce via GitHub, social media, etc.

• Memory safety: Buffer overflows, use-after-free, etc.
• Denial of Service: Resource exhaustion, infinite loops
• Input validation: Parsing vulnerabilities, injection attacks
• Information disclosure: Unintended data leaks
• Cryptographic issues: Weak algorithms, improper usage
• Authentication/Authorization: Bypass vulnerabilities
• Code execution: RCE, arbitrary code execution

• Issues in dependencies (report to upstream)
• Issues requiring physical access
• Social engineering attacks
• Denial of service requiring large resources
• Issues only affecting outdated/unsupported versions
• Theoretical vulnerabilities without practical impact

We follow Coordinated Vulnerability Disclosure:

1. Private Reporting: Report vulnerabilities privately
2. Acknowledgment: We acknowledge receipt within 48 hours
3. Investigation: We investigate and validate the report
4. Development: We develop and test a fix
5. Coordination: We coordinate disclosure timing with reporter
6. Public Disclosure: We publicly disclose after fix is available

• Standard: 90 days after initial report
• Extended: If fix requires more time, we may request extension
• Immediate: If vulnerability is being actively exploited

# Always use specific versions
[dependencies]
fingerprint = "2.1.0"  # Not "2.1" or "2"

# Regularly check for updates
cargo update

# Check for security advisories
cargo audit

// Use secure defaults
let config = HttpClientConfig {
    // Enable TLS verification
    verify_ssl: true,
    
    // Set reasonable timeouts
    timeout: Duration::from_secs(30),
    
    // Limit redirects
    max_redirects: 5,
    
    ..Default::default()
};

• Use HTTPS for all connections
• Validate SSL/TLS certificates
• Set appropriate timeouts
• Limit request/response sizes
• Implement rate limiting

// Always validate external input
fn process_packet(data: &[u8]) -> Result<(), Error> {
    // Check size
    if data.len() < MIN_SIZE || data.len() > MAX_SIZE {
        return Err(Error::InvalidSize);
    }
    
    // Validate format
    if !is_valid_format(data) {
        return Err(Error::InvalidFormat);
    }
    
    // Process...
    Ok(())
}

• ✅ Memory-safe Rust implementation
• ✅ Input validation on all external data
• ✅ Bounds checking on array accesses
• ✅ Safe integer arithmetic
• ✅ TLS 1.3 support
• ✅ Certificate validation
• ✅ Timeout protection
• ✅ Size limits on packets/requests
• ✅ DoS protection (rate limiting, resource limits)

• ⏳ Fuzzing integration (cargo-fuzz)
• ⏳ Property-based testing (proptest)
• ⏳ Memory profiling
• ⏳ Static analysis integration (MIRI)
• ⏳ Automated dependency scanning

Available in:

• SECURITY_AUDIT.md - Detailed audit report
• SECURITY_IMPROVEMENTS.md - Improvement tracking

Status: Not currently available

We appreciate security researchers but do not currently offer a formal bug bounty program. However, we will:

• Acknowledge your contribution in release notes
• Credit you in security advisories (if desired)
• Respond promptly and professionally

Security is everyone's responsibility. However, we have designated security champions:

• Primary Contact: Project maintainers
• Security Review: All code changes undergo security review
• Vulnerability Management: Coordinated through GitHub Security

This project follows:

• OWASP Top 10 web application security risks
• CWE Top 25 most dangerous software weaknesses
• Rust Security Guidelines
• NIST Cybersecurity Framework (where applicable)

• Rust Security Book
• OWASP Cheat Sheets
• CWE Top 25

• cargo audit - Check for known vulnerabilities
• cargo deny - Dependency policy enforcement
• cargo fuzz - Fuzzing framework
• clippy - Linting and best practices

• GitHub Discussions - For security questions
• GitHub Issues - For non-security bugs
• GitHub Security Advisories - For vulnerability reports

This security policy may be updated from time to time. Significant changes will be announced via:

• GitHub release notes
• Security advisories
• Project documentation

Last Updated: 2026-01-06
Version: 1.0
Next Review: 2026-04-06