Security Documentation#

This document provides comprehensive security information for DaemonEye, including threat model, security considerations, and best practices.

Table of Contents#

[TOC]

Threat Model#

Attack Vectors#

DaemonEye is designed to protect against various attack vectors:

1. Process Injection: Monitoring for code injection techniques
2. Privilege Escalation: Detecting unauthorized privilege changes
3. Persistence Mechanisms: Identifying malicious persistence techniques
4. Lateral Movement: Monitoring for lateral movement indicators
5. Data Exfiltration: Detecting suspicious data access patterns

Security Boundaries#

DaemonEye implements strict security boundaries:

• Process Isolation: Components run in separate processes
• Privilege Separation: Minimal required privileges per component
• Network Isolation: No listening ports by default
• Data Encryption: Sensitive data encrypted at rest and in transit
• Audit Logging: Comprehensive audit trail for all operations

Security Architecture#

Three-Component Security Model#

The three-component architecture provides defense in depth:

┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ ProcMonD │ │ daemoneye-agent │ │ daemoneye-cli │
│ (Privileged) │◄──►│ (User Space) │◄──►│ (Management) │
│ │ │ │ │ │
│ • Process Enum │ │ • Alerting │ │ • Queries │
│ • File Hashing │ │ • Network Ops │ │ • Configuration │
│ • Audit Logging │ │ • Rule Engine │ │ • Monitoring │
└─────────────────┘ └─────────────────┘ └─────────────────┘

Privilege Management#

ProcMonD (Privileged):

• Requires CAP_SYS_PTRACE capability
• Runs with minimal required privileges
• Drops privileges after initialization
• Isolated from network operations

daemoneye-agent (User Space):

• Runs as non-privileged user
• Handles network operations
• No direct system access
• Communicates via IPC only

daemoneye-cli (Management):

• Runs as regular user
• Read-only access to data
• No system modification capabilities
• Audit all operations

Security Features#

Memory Safety#

DaemonEye is built in Rust with memory safety guarantees:

// No unsafe code allowed
#![forbid(unsafe_code)]

// Safe memory management
fn create_process_info(process: &Process) -> ProcessInfo {
    ProcessInfo {
        pid: process.pid().as_u32(),
        name: process.name().to_string(),
        executable_path: process.exe().map(|p| p.to_string_lossy().to_string()),
        // ... other fields
    }
}

Input Validation#

Comprehensive input validation prevents injection attacks:

use validator::{Validate, ValidationError};

#[derive(Validate)]
pub struct DetectionRule {
    #[validate(length(min = 1, max = 1000))]
    pub name: String,

    #[validate(custom = "validate_sql")]
    pub sql_query: String,

    #[validate(range(min = 1, max = 1000))]
    pub priority: u32,
}

fn validate_sql(sql: &str) -> Result<(), ValidationError> {
    // Validate SQL syntax and prevent injection
    let ast = sqlparser::parse(sql)?;
    validate_ast(&ast)?;
    Ok(())
}

Cryptographic Integrity#

BLAKE3 hashing and Ed25519 signatures ensure data integrity:

use blake3::Hasher;
use ed25519_dalek::{Keypair, Signature};

pub struct IntegrityChecker {
    hasher: Hasher,
    keypair: Keypair,
}

impl IntegrityChecker {
    pub fn hash_data(&self, data: &[u8]) -> [u8; 32] {
        self.hasher.update(data).finalize().into()
    }

    pub fn sign_data(&self, data: &[u8]) -> Signature {
        self.keypair.sign(data)
    }

    pub fn verify_signature(&self, data: &[u8], signature: &Signature) -> bool {
        self.keypair.verify(data, signature).is_ok()
    }
}

SQL Injection Prevention#

Multiple layers of SQL injection prevention:

1. AST Validation: Parse and validate SQL queries $Implemented — `sqlparser` AST enforced at rule load time; SELECT-only with banned function list$
2. Prepared Statements: Use parameterized queries [Implemented]
3. Sandboxed Execution: Isolated query execution [Planned]
4. Input Sanitization: Clean and validate all inputs [Implemented]

use rusqlite::Connection;
use sqlparser::ast::Statement;

pub struct SafeQueryExecutor {
    conn: Connection,
    allowed_tables: HashSet<String>,
}

impl SafeQueryExecutor {
    pub fn execute_query(&self, query: &str) -> Result<QueryResult, QueryError> {
        // Parse and validate SQL
        let ast = sqlparser::parse(query)?;
        self.validate_ast(&ast)?;

        // Check table permissions
        self.check_table_access(&ast)?;

        // Execute with prepared statement
        let mut stmt = self.conn.prepare(query)?;
        let rows = stmt.query_map([], |row| {
            // Safe row processing
            Ok(ProcessRecord::from_row(row)?)
        })?;

        Ok(QueryResult::from_rows(rows))
    }
}

Security Configuration#

Authentication and Authorization#

security:
  authentication:
    enable_auth: true
    auth_method: jwt
    jwt_secret: ${JWT_SECRET}
    token_expiry: 3600

  authorization:
    enable_rbac: true
    roles:
      - name: admin
        permissions: [read, write, delete, configure]
      - name: operator
        permissions: [read, write]
      - name: viewer
        permissions: [read]

  access_control:
    allowed_users: []
    allowed_groups: []
    denied_users: [root]
    denied_groups: [wheel]

Network Security#

security:
  network:
    enable_tls: true
    cert_file: /etc/daemoneye/cert.pem
    key_file: /etc/daemoneye/key.pem
    ca_file: /etc/daemoneye/ca.pem
    verify_peer: true
    cipher_suites: [TLS_AES_256_GCM_SHA384, TLS_CHACHA20_POLY1305_SHA256]

  firewall:
    enable_firewall: true
    allowed_ports: [8080, 9090]
    allowed_ips: [10.0.0.0/8, 192.168.0.0/16]
    block_unknown: true

Data Protection#

security:
  encryption:
    enable_encryption: true
    algorithm: AES-256-GCM
    key_rotation_days: 30

  data_protection:
    enable_field_masking: true
    masked_fields: [command_line, environment_variables]
    enable_data_retention: true
    retention_days: 30

  audit:
    enable_audit_logging: true
    audit_log_path: /var/log/daemoneye/audit.log
    log_level: info
    include_sensitive_data: false

Security Best Practices#

Deployment Security#

1. Principle of Least Privilege:

   • Run components with minimal required privileges
   • Use dedicated users and groups
   • Drop privileges after initialization

2. Network Security:

   • Use TLS for all network communications
   • Implement firewall rules
   • Monitor network traffic

3. Data Protection:

   • Encrypt sensitive data at rest
   • Use secure key management
   • Implement data retention policies

4. Access Control:

   • Implement role-based access control
   • Use strong authentication
   • Monitor access patterns

Configuration Security#

1. Secure Defaults:

   • Disable unnecessary features
   • Use secure default settings
   • Require explicit configuration for sensitive features

2. Secret Management:

   • Use environment variables for secrets
   • Implement secret rotation
   • Never hardcode credentials

3. Input Validation:

   • Validate all inputs
   • Sanitize user data
   • Use parameterized queries

Operational Security#

1. Monitoring:

   • Monitor system health
   • Track security events
   • Implement alerting

2. Logging:

   • Enable comprehensive logging
   • Use structured logging
   • Implement log rotation

3. Updates:

   • Keep software updated
   • Monitor security advisories
   • Test updates in staging

Security Considerations#

Threat Detection#

DaemonEye can detect various security threats:

1. Malware Execution:

   • Suspicious process names
   • Unusual execution patterns
   • Code injection attempts

2. Privilege Escalation:

   • Unauthorized privilege changes
   • Setuid/setgid abuse
   • Capability escalation

3. Persistence Mechanisms:

   • Startup modifications
   • Service installations
   • Scheduled task creation

4. Lateral Movement:

   • Network scanning
   • Credential theft
   • Remote execution

Incident Response#

1. Detection:

   • Real-time monitoring
   • Automated alerting
   • Threat intelligence integration

2. Analysis:

   • Forensic data collection
   • Timeline reconstruction
   • Root cause analysis

3. Containment:

   • Process isolation
   • Network segmentation
   • Access restrictions

4. Recovery:

   • System restoration
   • Security hardening
   • Monitoring enhancement

Compliance#

Security Standards#

DaemonEye helps meet various security standards:

1. NIST Cybersecurity Framework:

   • Identify: Asset discovery and classification
   • Protect: Access control and data protection
   • Detect: Continuous monitoring and threat detection
   • Respond: Incident response and automation
   • Recover: Business continuity and restoration

2. ISO 27001:

   • Information security management
   • Risk assessment and treatment
   • Security monitoring and incident management
   • Continuous improvement

3. SOC 2:

   • Security controls
   • Availability monitoring
   • Processing integrity
   • Confidentiality protection

Audit Requirements#

1. Audit Logging:

   • Comprehensive event logging
   • BLAKE3 hash-chained audit ledger [Implemented]; Merkle tree inclusion proofs $In Progress — `generate_inclusion_proof()` is stubbed$
   • Long-term retention

2. Access Controls:

   • User authentication
   • Role-based authorization
   • Access monitoring

3. Data Protection:

   • Encryption at rest and in transit
   • Data classification
   • Retention policies

Security Testing#

Vulnerability Assessment#

1. Static Analysis:

   • Code review
   • Dependency scanning
   • Configuration validation

2. Dynamic Analysis:

   • Penetration testing
   • Fuzzing
   • Runtime monitoring

3. Security Scanning:

   • Container image scanning
   • Network vulnerability scanning
   • Application security testing

Security Validation#

1. Unit Testing:

   • Security function testing
   • Input validation testing
   • Error handling testing

2. Integration Testing:

   • Component interaction testing
   • Security boundary testing
   • End-to-end security testing

3. Performance Testing:

   • Security overhead measurement
   • Load testing with security features
   • Stress testing under attack

Security Updates#

Update Process#

1. Security Advisories:

   • Monitor security mailing lists
   • Track CVE databases
   • Subscribe to vendor notifications

2. Patch Management:

   • Test patches in staging
   • Deploy during maintenance windows
   • Verify patch effectiveness

3. Vulnerability Response:

   • Assess vulnerability impact
   • Implement temporary mitigations
   • Deploy permanent fixes

Security Monitoring#

1. Threat Intelligence:

   • Subscribe to threat feeds
   • Monitor security blogs
   • Participate in security communities

2. Continuous Monitoring:

   • Real-time security monitoring
   • Automated threat detection
   • Incident response automation

3. Security Metrics:

   • Track security KPIs
   • Monitor compliance metrics
   • Report security status

This security documentation provides comprehensive guidance for securing DaemonEye deployments. For additional security information, consult the specific security guides or contact the security team.