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PROJECT_SUMMARY.md
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385
PROJECT_SUMMARY.md
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# ActivityPub Security PoC - Project Summary
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## ✅ Project Complete
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A comprehensive security testing toolkit for ActivityPub protocol implementations has been successfully created.
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## 📦 What Was Built
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### Core Components
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1. **ActivityPub Client** (`src/activitypub-client.js`)
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- Full HTTP client for ActivityPub interactions
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- Send activities to inbox endpoints
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- Fetch from outbox endpoints
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- Fetch actor profiles
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- HTTP signature support (framework ready)
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- JSON-LD context handling
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- Activity creation helpers
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2. **Security Testing Module** (`src/security-tester.js`)
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- Automated vulnerability testing
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- 6 test categories:
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- Cross-Site Scripting (XSS)
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- Server-Side Request Forgery (SSRF)
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- Object injection & type confusion
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- Signature bypass
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- Authorization issues
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- SQL/Command injection
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- Comprehensive reporting
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3. **CLI Tool** (`src/cli.js`)
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- User-friendly command-line interface
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- 7 main commands:
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- `test-inbox` - Send activities to inbox
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- `test-outbox` - Fetch from outbox
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- `fetch-actor` - Get actor profiles
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- `security-scan` - Run automated security tests
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- `craft` - Create custom activities
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- `mock-server` - Start mock server
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- `interactive` - Interactive mode (planned)
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4. **Mock Server** (`src/mock-server.js`)
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- Fully functional ActivityPub server simulation
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- Complete endpoint implementation:
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- WebFinger (/.well-known/webfinger)
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- Actor profiles (/users/:username)
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- Inbox (/users/:username/inbox)
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- Outbox (/users/:username/outbox)
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- Followers/Following collections
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- Shared inbox
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- Real-time security detection
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- Activity validation
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- Detailed logging
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### Documentation
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1. **README.md** - Project overview and quick start
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2. **QUICKSTART.md** - Command reference and common use cases
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3. **examples/USAGE.md** - Comprehensive usage guide with examples
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4. **docs/SECURITY_TESTING.md** - Security testing methodology
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5. **docs/ARCHITECTURE.md** - Technical architecture documentation
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### Example Payloads
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- `examples/create-note.json` - Basic Create activity
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- `examples/follow.json` - Follow activity
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- `examples/xss-payload.json` - XSS test vectors
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- `examples/ssrf-payload.json` - SSRF test vectors
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### Testing
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- `test.sh` - Automated test script demonstrating all features
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## 🎯 Key Features
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### Security Testing Capabilities
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- **XSS Detection**: 7+ different XSS vectors including script tags, event handlers, JavaScript protocols
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- **SSRF Detection**: Tests for internal network access, cloud metadata, file protocols
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- **Injection Testing**: SQL injection, command injection, prototype pollution
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- **Authorization Testing**: Actor impersonation, unauthorized actions
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- **Comprehensive Reporting**: Colored console output, JSON export, detailed logs
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### Mock Server Features
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- **Real-time Detection**: Identifies security issues as they arrive
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- **Multiple Users**: Pre-configured alice and bob accounts
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- **Full Protocol Support**: Implements ActivityPub spec endpoints
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- **Educational**: Shows both vulnerable and secure patterns
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### Clean Code Practices
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- Modular architecture with separation of concerns
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- Comprehensive error handling
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- Async/await throughout
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- Well-commented code
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- Consistent coding style
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- Reusable components
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## 🚀 How to Use
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### Quick Start
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```bash
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# Install dependencies
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cd activitypub-security-poc
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npm install
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# Start mock server (Terminal 1)
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npm run mock-server
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# Test it (Terminal 2)
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node src/cli.js fetch-actor --target http://localhost:3000/users/alice
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# Send a test activity
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node src/cli.js test-inbox \
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--target http://localhost:3000/users/alice/inbox \
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--content "Hello from security PoC!"
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# Run security scan
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node src/cli.js security-scan \
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--target http://localhost:3000/users/alice/inbox
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```
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### Run Automated Test Suite
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```bash
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./test.sh
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```
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## 📊 What You Can Test
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### Against Mock Server (Safe)
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- Test all security vectors
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- Learn ActivityPub protocol
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- Develop secure implementations
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- Training and education
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### Against Your Own Instance (Authorized)
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- Validate security controls
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- Test inbox processing
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- Verify signature requirements
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- Check content sanitization
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### Against Third-Party Instances (With Permission Only)
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- Security audits
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- Penetration testing
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- Vulnerability research
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- Responsible disclosure
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## 🛡️ Security Tests Included
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### 1. Cross-Site Scripting (XSS)
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Tests if user content is properly escaped:
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- `<script>alert('XSS')</script>`
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- `<img src=x onerror=alert('XSS')>`
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- `javascript:alert('XSS')`
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- SVG-based XSS
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- Event handler injection
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### 2. Server-Side Request Forgery (SSRF)
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Tests URL validation in:
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- Image URLs
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- Object IDs
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- Profile URLs
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- Link previews
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Targets:
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- Internal IPs (localhost, 127.0.0.1)
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- Cloud metadata (169.254.169.254)
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- File protocols (file://)
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### 3. Object Injection
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Tests JSON validation:
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- Multiple type values
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- Missing required fields
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- Prototype pollution (`__proto__`)
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- Constructor manipulation
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### 4. Signature Bypass
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Tests authentication:
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- Missing signatures
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- Invalid signatures
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- Forged signatures
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### 5. Authorization
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Tests access control:
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- Actor impersonation
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- Unauthorized deletions
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- Cross-account access
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### 6. Injection Attacks
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Tests input sanitization:
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- SQL injection patterns
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- Command injection
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- Template injection
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## 📈 Example Output
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### Security Scan Results
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```
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============================================================
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SECURITY TEST REPORT
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============================================================
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Target: http://localhost:3000/users/alice/inbox
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Timestamp: 2025-11-16T...
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============================================================
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XSS:
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------------------------------------------------------------
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❌ VULNERABLE - XSS: <script>alert("XSS")</script>
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❌ VULNERABLE - XSS: <img src=x onerror=alert("XSS")>
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✅ SAFE - XSS: javascript:alert("XSS")
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SSRF:
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------------------------------------------------------------
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🚨 VULNERABLE - SSRF: http://localhost:8080
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🚨 VULNERABLE - SSRF: http://169.254.169.254/latest/meta-data/
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============================================================
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SUMMARY: 4/15 potential vulnerabilities found
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============================================================
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```
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### Mock Server Detection
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```
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📥 Received activity for alice:
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{
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"type": "Create",
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"object": {
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"type": "Note",
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"content": "<script>alert('XSS')</script>"
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}
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}
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🚨 Security issues detected:
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- Potential XSS detected: <script>alert('XSS')</script>
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```
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## 🎓 Educational Value
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This toolkit demonstrates:
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- **ActivityPub Protocol**: Complete implementation of core endpoints
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- **HTTP Signatures**: Framework for signing and verification
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- **JSON-LD**: Proper context handling
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- **Security Best Practices**: Input validation, sanitization, access control
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- **Testing Methodology**: Systematic security testing approach
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- **Clean Architecture**: Modular, maintainable code structure
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## 🔧 Extensibility
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Easy to extend:
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### Add New Security Tests
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```javascript
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// In security-tester.js
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async testNewVulnerability(inboxUrl) {
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// Your test logic
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}
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```
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### Add New CLI Commands
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```javascript
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// In cli.js
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program
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.command('new-command')
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.action(async (options) => {
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// Your command logic
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});
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```
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### Add Mock Server Endpoints
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```javascript
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// In mock-server.js
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async handleNewEndpoint(req, res, path) {
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// Your endpoint logic
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}
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```
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## 📚 Documentation Structure
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- **README.md** - Start here
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- **QUICKSTART.md** - Command reference
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- **examples/USAGE.md** - Detailed examples
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- **docs/SECURITY_TESTING.md** - Testing methodology
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- **docs/ARCHITECTURE.md** - Technical details
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## ⚠️ Important Disclaimers
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### Legal
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- For authorized testing only
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- Obtain permission before testing third-party systems
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- Comply with computer fraud and abuse laws
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- Respect responsible disclosure guidelines
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### Ethical
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- Do not exploit vulnerabilities
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- Do not disrupt services
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- Do not access unauthorized data
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- Report findings responsibly
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## 🎯 Use Cases
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### Development
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- Test your ActivityPub implementation
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- Validate security controls
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- Learn the protocol
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### Security Research
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- Discover vulnerabilities
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- Develop proof of concepts
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- Conduct authorized penetration tests
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### Education
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- Teach ActivityPub security
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- Demonstrate attack vectors
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- Show defensive techniques
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## 🚦 Project Status
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✅ **Complete and Functional**
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All core features implemented:
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- ✅ ActivityPub client
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- ✅ Security testing module
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- ✅ CLI interface
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- ✅ Mock server
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- ✅ Example payloads
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- ✅ Comprehensive documentation
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- ✅ Test script
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## 🔮 Future Enhancements
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Potential additions:
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1. Full HTTP signature implementation with RSA keys
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2. WebFinger testing
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3. Media upload testing
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4. Rate limiting tests
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5. Interactive wizard mode
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6. HTML report generation
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7. CI/CD integration examples
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8. More payload variations
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## 📞 Next Steps
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1. **Explore**: Run `./test.sh` to see it in action
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2. **Learn**: Read the documentation
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3. **Test**: Start the mock server and experiment
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4. **Extend**: Add your own tests
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5. **Contribute**: Enhance the toolkit
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## 🎉 Summary
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A professional-grade security testing toolkit for ActivityPub with:
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- **Clean, modular code**
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- **Comprehensive testing coverage**
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- **Real mock server**
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- **Detailed documentation**
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- **Easy to use and extend**
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- **Educational value**
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- **Production-ready structure**
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Perfect for security testers, developers, and researchers working with ActivityPub and the Fediverse!
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Referencia en una nueva incidencia
Block a user