This document outlines the security measures implemented in the Open Source Project Generator (v1.3.0+).

Issue: File operations using user-controlled paths could allow directory traversal attacks.

Fix:

• Created pkg/security/ package with path validation and sanitization functions
• Implemented SanitizePath() to detect and prevent path traversal attempts
• Added secure file operation wrappers with automatic path validation
• Updated config manager and filesystem operations to use security package
• All security errors use categorized error types from pkg/errors/

Functions:

// Sanitizes and validates paths, prevents directory traversal
func SanitizePath(path string) (string, error)

// Validates paths against allowed base paths
func ValidatePath(path string, allowedBasePaths ...string) error

// Secure file operations with automatic path validation
func SafeReadFile(path string, allowedBasePaths ...string) ([]byte, error)
func SafeWriteFile(path string, data []byte, allowedBasePaths ...string) error
func SafeMkdirAll(path string, allowedBasePaths ...string) error

Issue: Files and directories were created with overly permissive permissions.

Changes:

• Directory permissions: 0755 → 0750 (removed world read/execute)
• File permissions: 0644 → 0600 (removed group/world read)
• Log file permissions: 0644 → 0600

Files Updated:

• pkg/security/ - Security operations package
• internal/config/manager.go - Config file operations
• internal/app/logger.go - Log file creation
• internal/app/app.go - Application initialization
• pkg/filesystem/ - File system operations
• pkg/cli/ - CLI command handlers

Issue: Some function calls that could return errors were not being handled.

Fix:

• All security operations return categorized errors from pkg/errors/
• Security errors use errors.NewSecurityError() for consistent handling
• Validation errors use errors.NewValidationError() for input issues
• Config errors use errors.NewConfigError() for configuration problems

Status: Core generator code uses proper error handling. Templates updated to follow same patterns.

Issue: Generated projects needed enhanced security measures.

Fixes:

• JWT Security: Implemented secure JWT token validation with algorithm verification
• Database Security: Added parameterized queries and input validation
• Authentication Security: Enhanced authentication middleware with rate limiting
• File Permission Hardening: Applied secure file permissions in generated projects
• Input Validation: Comprehensive input sanitization and validation
• Error Handling: Secure error responses that don't leak sensitive information

Security Features in Generated Projects:

• SQL injection prevention through parameterized queries
• XSS protection through input sanitization
• CSRF protection in web applications
• Secure password hashing with bcrypt
• Rate limiting on authentication endpoints
• Secure session management
• Comprehensive logging and monitoring

1. Always sanitize file paths using pkg/security before operations
2. Use restrictive file permissions (0600 for files, 0750 for directories)
3. Validate user input that affects file paths
4. Use absolute paths when possible
5. Return categorized errors from pkg/errors/ for proper error handling

import (
    "github.com/cuesoftinc/open-source-project-generator/pkg/security"
    "github.com/cuesoftinc/open-source-project-generator/pkg/errors"
)

// Always sanitize user input before file operations
sanitized, err := security.SanitizePath(userPath)
if err != nil {
    return errors.NewSecurityError("invalid path", err)
}

// Validate against allowed base paths
if err := security.ValidatePath(sanitized, "/allowed/base/path"); err != nil {
    return errors.NewSecurityError("path traversal detected", err)
}

// Use security package functions instead of direct os calls
content, err := security.SafeReadFile(path, allowedBasePaths...)
if err != nil {
    return errors.NewSecurityError("failed to read file", err)
}

err = security.SafeWriteFile(path, data, allowedBasePaths...)
if err != nil {
    return errors.NewSecurityError("failed to write file", err)
}

err = security.SafeMkdirAll(path, allowedBasePaths...)
if err != nil {
    return errors.NewSecurityError("failed to create directory", err)
}

Security operations follow the project's dependency injection pattern:

// Components receive security dependencies via interfaces
type FileSystemManager struct {
    security security.Interface
    validator validation.Interface
}

func NewFileSystemManager(sec security.Interface, val validation.Interface) *FileSystemManager {
    return &FileSystemManager{
        security: sec,
        validator: val,
    }
}

• Only whitelisted tools and flags are executed
• All tool commands are validated before execution
• Command injection prevention through parameter validation
• Tool output is sanitized before processing
• Timeout protection prevents hanging processes

• All user inputs validated through internal/config/ validators
• Path inputs sanitized via pkg/security/SanitizePath()
• Configuration fields validated before tool execution
• Categorized error handling via pkg/cli error types
• Early validation with fail-fast approach

• Regularly update dependencies using go get -u
• Use dependency scanning tools (nancy, govulncheck)
• Pin dependency versions in go.mod
• Tool version requirements defined in internal/orchestrator/tool_discovery.go
• Offline mode supported via cached tool metadata

Run security scans regularly:

# Run gosec security scanner
gosec ./...

# Run dependency vulnerability scanner
go list -json -deps ./... | nancy sleuth

# Run static analysis
staticcheck ./...

# Run govulncheck for Go vulnerabilities
govulncheck ./...

# Scan for secrets in code
trufflehog filesystem ./

# Validate generated projects
generator audit ./output --security --fail-on-high

If you discover a security vulnerability, please report it privately to the maintainers rather than opening a public issue.

The generator creates projects with built-in security features:

• JWT Authentication: Secure token validation with algorithm verification
• Database Security: Parameterized queries preventing SQL injection
• Input Validation: Comprehensive input sanitization and validation
• Rate Limiting: Protection against brute force attacks
• Password Security: bcrypt hashing with configurable cost factors
• CORS Protection: Configurable cross-origin resource sharing policies
• Security Headers: Automatic security header implementation

• XSS Protection: Input sanitization and CSP headers
• CSRF Protection: Token-based CSRF protection
• Secure Authentication: JWT token management with secure storage
• Content Security Policy: Comprehensive CSP implementation
• Dependency Security: Regular security updates and vulnerability scanning

• Secure Storage: Encrypted local storage for sensitive data
• Certificate Pinning: SSL certificate validation
• Biometric Authentication: Secure biometric authentication support
• Network Security: HTTPS enforcement and secure communication

• Container Security: Multi-stage builds with minimal attack surface
• Kubernetes Security: Security contexts and network policies
• Terraform Security: Infrastructure as code with security best practices
• Monitoring: Comprehensive security monitoring and alerting

• Sanitize all file paths using pkg/security/SanitizePath()
• Use secure file permissions (0600 for files, 0750 for directories)
• Return categorized errors from pkg/cli error types
• Validate user inputs through internal/config/ validators
• Use dependency injection with interfaces from pkg/interfaces/
• Review tool execution code for command injection vulnerabilities
• Run security scanners before submitting PRs (make security-scan)
• Test generated projects for security vulnerabilities
• Update security documentation for new features
• Follow clean architecture patterns (presentation → business logic → infrastructure)
• Never use direct os package calls; use pkg/filesystem/ and pkg/security/ abstractions