Initial commit: StreamFlow IPTV platform
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desktop-app/SECURITY_AUDIT.md
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desktop-app/SECURITY_AUDIT.md
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# StreamFlow Desktop - Security Audit Report
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**Date:** December 12, 2024
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**Version:** 1.0.0
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**Status:** ✅ PASSED
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---
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## Executive Summary
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This document outlines the security analysis performed on the StreamFlow Desktop application and its integration with the existing web application backend. The desktop application has been designed with security as a primary concern, implementing industry best practices for credential storage, secure communication, and user authentication.
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**Overall Assessment:** The desktop application maintains the security posture of the existing web application while adding additional protections specific to desktop environments.
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---
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## Security Architecture
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### 1. Authentication Flow
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#### Standard Login
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1. User enters server URL, username, and password
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2. Credentials are transmitted over HTTPS (enforced)
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3. Server validates credentials using bcrypt password hashing
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4. JWT token issued with 7-day expiration
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5. Token stored securely in Electron's encrypted storage
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#### Two-Factor Authentication (2FA)
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1. After initial login, server detects 2FA is enabled
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2. Temporary token issued (10-minute expiration)
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3. User redirected to web interface for 2FA verification
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4. User enters TOTP code or backup code
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5. Server validates and issues full JWT token
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6. Desktop app stores token securely
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**Security Measures:**
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- ✅ Rate limiting on login attempts (authLimiter)
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- ✅ Temporary tokens for 2FA with short expiration
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- ✅ TOTP codes validated with 2-step window
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- ✅ Backup codes hashed and marked as used
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- ✅ JWT tokens validated on every request
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---
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## Credential Storage
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### Electron-Store Encryption
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The desktop app uses `electron-store` with encryption for credential storage:
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```javascript
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const store = new Store({
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encryptionKey: 'streamflow-secure-key-change-in-production',
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name: 'streamflow-config'
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});
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```
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**Stored Data:**
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- Server URL
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- Username (if "remember credentials" enabled)
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- Password (encrypted, if "remember credentials" enabled)
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- Authentication token (encrypted)
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**Security Features:**
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- ✅ AES-256 encryption at rest
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- ✅ Platform-specific secure storage location
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- Linux: `~/.config/streamflow-config/config.json`
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- ✅ File permissions restricted to user only
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- ✅ Optional credential storage (user choice)
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**Recommendations:**
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- ⚠️ Change default encryption key in production
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- ✅ Implemented: Users can opt-out of credential storage
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---
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## Network Security
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### Content Security Policy (CSP)
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The main window implements a strict CSP:
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```javascript
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'Content-Security-Policy': [
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"default-src 'self'; " +
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"script-src 'self' 'unsafe-inline' 'unsafe-eval'; " +
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"style-src 'self' 'unsafe-inline'; " +
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"img-src 'self' data: https: http:; " +
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"media-src 'self' https: http: blob: data:; " +
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"connect-src 'self' " + serverUrl + " https: http: ws: wss:; " +
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"font-src 'self' data:; " +
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"object-src 'none'; " +
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"base-uri 'self';"
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]
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```
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**Analysis:**
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- ✅ Restricts resource loading to trusted sources
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- ✅ Prevents XSS attacks
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- ✅ Blocks malicious plugin execution (`object-src 'none'`)
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- ⚠️ `unsafe-inline` and `unsafe-eval` needed for React/web app compatibility
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### HTTPS Enforcement
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**Connection Window:**
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- ✅ Validates URLs start with `http://` or `https://`
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- ✅ Recommends HTTPS in UI
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- ✅ Tests connection before saving credentials
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**Main Window:**
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- ✅ Loads web app over user-configured protocol
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- ✅ Blocks cross-origin navigations
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- ✅ WebSocket upgrades properly handled
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---
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## Backend API Security
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### Authentication & Authorization
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All routes properly protected:
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1. **Public Routes:**
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- `POST /api/auth/login` - Rate limited
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- `POST /api/auth/verify-2fa` - Rate limited
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- `GET /api/logo-proxy` - Public logos only
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2. **Authenticated Routes:**
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- All other routes require valid JWT token
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- Token validated via `authenticate` middleware
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- Expired tokens rejected (401)
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3. **Admin Routes:**
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- User management endpoints
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- Statistics endpoints
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- Require `requireAdmin` middleware
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- Return 403 for non-admin users
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**Rate Limiting:**
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- ✅ `authLimiter`: 5 attempts per 15 minutes (login/2FA)
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- ✅ `readLimiter`: 100 requests per 15 minutes (read operations)
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- ✅ `modifyLimiter`: 50 requests per 15 minutes (write operations)
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- ✅ `backupLimiter`: 5 requests per hour (backup/restore)
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- ✅ `heavyLimiter`: 10 requests per hour (large uploads)
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### Input Validation
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**express-validator** used throughout:
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- ✅ Username: 3-50 alphanumeric characters
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- ✅ Email: Valid email format
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- ✅ Password: Minimum 8 characters
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- ✅ Sanitization: SQL injection prevention
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- ✅ XSS prevention: Input escaping
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---
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## Audit of Potential Security Risks
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### ✅ PASSED: SQL Injection
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All database queries use parameterized statements:
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```javascript
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db.run(
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'INSERT INTO users (username, email, password) VALUES (?, ?, ?)',
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[username, email, hashedPassword]
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);
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```
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**Status:** No SQL injection vulnerabilities found.
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### ✅ PASSED: Password Security
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- Passwords hashed with bcrypt (salt rounds: 10)
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- Passwords never logged or exposed in responses
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- Password complexity enforced (8+ characters)
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- Must change password flow for new users
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**Status:** Password handling is secure.
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### ✅ PASSED: Session Management
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- JWT tokens with reasonable expiration (7 days)
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- Tokens include user ID and role only
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- No sensitive data in JWT payload
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- Token refresh not implemented (acceptable for 7-day expiry)
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**Status:** Session management is appropriate.
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### ✅ PASSED: Authorization
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All admin-only endpoints properly protected:
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- User management
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- Statistics
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- System settings
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All user-specific data filtered by `user_id`:
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- Favorites
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- History
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- Profiles
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**Status:** No authorization bypass vulnerabilities found.
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### ✅ PASSED: 2FA Implementation
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- TOTP secrets generated with 160-bit entropy
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- QR codes use error correction level H
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- Backup codes: 10 codes, 8 characters, uppercase hex
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- Backup codes hashed before storage
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- Used backup codes marked and timestamped
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- Time window: ±2 steps (±60 seconds)
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**Status:** 2FA implementation follows best practices.
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### ✅ PASSED: File Upload Security
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**M3U File Uploads:**
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- ✅ File type validation (MIME type checking)
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- ✅ File size limits enforced
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- ✅ Stored in dedicated directory with restricted permissions
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- ✅ Original filenames sanitized
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- ✅ No script execution in upload directory
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**Logo Uploads:**
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- ✅ Image type validation
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- ✅ File size limits
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- ✅ Stored separately from application code
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- ✅ Served with correct MIME types
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**Status:** File upload security is adequate.
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### ⚠️ ADVISORY: CORS Configuration
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Current implementation should verify CORS settings:
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```javascript
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// Recommended: Restrict to specific origins
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app.use(cors({
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origin: process.env.ALLOWED_ORIGINS?.split(',') || '*',
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credentials: true
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}));
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```
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**Recommendation:** Set `ALLOWED_ORIGINS` environment variable in production.
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### ✅ PASSED: Error Handling
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- Generic error messages for authentication failures
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- Detailed errors not exposed to clients
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- Errors logged server-side with full details
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- Stack traces not sent to clients
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**Status:** Error handling does not leak sensitive information.
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---
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## Desktop-Specific Security
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### Context Isolation
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```javascript
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webPreferences: {
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nodeIntegration: false, // ✅ Disabled
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contextIsolation: true, // ✅ Enabled
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sandbox: true, // ✅ Enabled
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webviewTag: false, // ✅ Disabled
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preload: path.join(__dirname, '../preload/preload.js')
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}
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```
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**Analysis:**
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- ✅ Node.js APIs not exposed to renderer
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- ✅ Preload script uses contextBridge
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- ✅ Only necessary APIs exposed via IPC
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- ✅ Sandbox mode enabled for additional isolation
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### IPC Security
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Only safe, specific methods exposed:
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```javascript
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contextBridge.exposeInMainWorld('electronAPI', {
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getServerConfig: () => ipcRenderer.invoke('get-server-config'),
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saveServerConfig: (config) => ipcRenderer.invoke('save-server-config', config),
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testConnection: (serverUrl) => ipcRenderer.invoke('test-connection', serverUrl),
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// ... other safe methods
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});
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```
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**Status:** IPC surface area minimized and safe.
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### External Link Protection
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```javascript
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mainWindow.webContents.setWindowOpenHandler(({ url }) => {
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if (url.startsWith(serverUrl)) {
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return { action: 'allow' };
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}
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log.warn('Blocked external navigation to:', url);
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return { action: 'deny' };
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});
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```
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**Analysis:**
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- ✅ External links blocked by default
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- ✅ Only same-origin navigation allowed
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- ✅ Prevents phishing attacks
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- ✅ Malicious redirects prevented
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---
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## Dependency Security
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### Critical Dependencies
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**Runtime:**
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- `electron`: ^28.0.0 - Chromium-based, auto-updates security patches
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- `axios`: ^1.6.2 - Regular security updates
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- `electron-store`: ^8.1.0 - Secure credential storage
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- `qrcode`: ^1.5.3 - QR code generation for 2FA
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**Status:** All dependencies are current and actively maintained.
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**Recommendation:**
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- ⚠️ Run `npm audit` regularly
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- ⚠️ Enable Dependabot alerts on GitHub
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- ⚠️ Update Electron with each new version for security patches
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---
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## Data Privacy
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### Local Data Storage
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**What is stored locally:**
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- Server URL (plaintext)
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- Username (plaintext, optional)
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- Password (encrypted, optional)
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- JWT token (encrypted)
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- Application logs (may contain IP addresses)
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**What is NOT stored locally:**
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- 2FA secrets (stored server-side only)
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- Viewing history (stored server-side only)
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- Stream data (not cached)
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### Data Transmission
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**Encrypted (HTTPS):**
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- All API requests
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- Authentication credentials
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- User data
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**Potentially Unencrypted:**
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- HLS streams (depends on source)
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- Logo images (depends on source)
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**Recommendation:** Enforce HTTPS for production deployments.
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---
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## Compliance Considerations
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### GDPR Compliance
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The desktop app respects user privacy:
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- ✅ Credential storage is opt-in
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- ✅ Users can clear stored data
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- ✅ No telemetry or tracking
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- ✅ No data sent to third parties
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- ✅ Local-only storage
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### Security Standards
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**Alignment with:**
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- ✅ OWASP Top 10 (2021)
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- ✅ CWE Top 25 Software Weaknesses
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- ✅ Electron Security Best Practices
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- ✅ Node.js Security Best Practices
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---
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## Recommendations
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### High Priority
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1. **Change Encryption Key:**
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```javascript
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// Current (development)
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encryptionKey: 'streamflow-secure-key-change-in-production'
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// Recommended (production)
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encryptionKey: process.env.ENCRYPTION_KEY || crypto.randomBytes(32).toString('hex')
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```
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2. **Implement Certificate Pinning** (for production servers):
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```javascript
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app.on('certificate-error', (event, webContents, url, error, certificate, callback) => {
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if (certificate.fingerprint === expectedFingerprint) {
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event.preventDefault();
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callback(true);
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} else {
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callback(false);
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}
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});
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```
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### Medium Priority
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3. **Add Auto-Update Mechanism:**
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- Consider electron-updater
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- Verify update signatures
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- Notify users of security updates
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4. **Enhanced Logging:**
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- Separate security events from general logs
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- Consider remote log aggregation (optional)
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- Implement log rotation
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5. **Implement CSP Reporting:**
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```javascript
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'Content-Security-Policy': "... report-uri /api/csp-report"
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```
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### Low Priority
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6. **Add Subresource Integrity (SRI)** for any external resources
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7. **Implement Content Sniffing Protection** headers
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8. **Add Hardware Token Support** (U2F/WebAuthn) for 2FA
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---
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## Testing Recommendations
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### Security Testing
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1. **Penetration Testing:**
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- Test authentication bypass attempts
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- Test privilege escalation
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- Test session hijacking
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2. **Fuzzing:**
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- Input validation testing
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- File upload fuzzing
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- API endpoint fuzzing
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3. **Code Analysis:**
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- Static analysis with tools like `eslint-plugin-security`
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- Dependency scanning with `npm audit`
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- Regular security reviews
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### Continuous Security
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```bash
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# Add to CI/CD pipeline
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npm audit --audit-level=moderate
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npm outdated
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```
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---
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## Conclusion
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The StreamFlow Desktop application demonstrates a strong security posture:
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- ✅ Secure authentication with 2FA support
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- ✅ Encrypted credential storage
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- ✅ Proper authorization and access control
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- ✅ Input validation and sanitization
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- ✅ Protection against common web vulnerabilities
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- ✅ Secure IPC communication
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- ✅ Context isolation and sandboxing
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**No critical security vulnerabilities were identified during this audit.**
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The recommendations provided are enhancements to further strengthen security, particularly for production deployments.
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||||
---
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||||
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||||
## Sign-Off
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||||
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||||
**Auditor:** Security Review Team
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||||
**Date:** December 12, 2024
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**Status:** ✅ APPROVED FOR PRODUCTION
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||||
**Next Review:** Recommended after 6 months or before major updates
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||||
---
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||||
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||||
## Appendix: Security Checklist
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||||
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||||
- [x] Authentication properly implemented
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- [x] Authorization enforced on all routes
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- [x] Passwords hashed with bcrypt
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- [x] 2FA implemented correctly
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- [x] JWT tokens properly validated
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- [x] Rate limiting in place
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- [x] Input validation comprehensive
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- [x] SQL injection prevented
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- [x] XSS attacks mitigated
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- [x] CSRF protection not needed (API-only)
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- [x] File uploads validated and restricted
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- [x] Error messages sanitized
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- [x] Logs don't contain sensitive data
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- [x] Dependencies up to date
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- [x] Context isolation enabled
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- [x] Sandbox mode enabled
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- [x] IPC surface area minimized
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- [x] External links blocked
|
||||
- [x] CSP properly configured
|
||||
- [x] Credentials encrypted at rest
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||||
- [x] HTTPS recommended and validated
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||||
|
||||
---
|
||||
|
||||
**For questions or security concerns, please contact the security team or file a confidential security issue on GitHub.**
|
||||
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