diff --git a/doc/security/STRIDE_THREAT_MODEL.md b/doc/security/STRIDE_THREAT_MODEL.md index a284cb1f..d85ce92f 100644 --- a/doc/security/STRIDE_THREAT_MODEL.md +++ b/doc/security/STRIDE_THREAT_MODEL.md @@ -1,47 +1,38 @@ -# STRIDE Threat Model for API Dash - -**Document Version:** 1.0 -**Date:** December 2025 -**Project:** API Dash - Open Source Cross-Platform API Client -**Classification:** Public - ---- - -## Executive Summary +# Threat Model for API Dash This document presents a comprehensive threat model for API Dash using the STRIDE (Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, Elevation of Privilege) framework. API Dash is a cross-platform API testing client built with Flutter that allows users to create, test, and manage API requests locally on their devices. ### Key Risk Areas Identified: -1. **High Priority**: Information disclosure of sensitive API credentials and tokens -2. **High Priority**: Tampering with stored API requests and collections -3. **Medium Priority**: Local data security and encryption -4. **Medium Priority**: Code generation security vulnerabilities ---- +1. Information disclosure of sensitive API credentials and tokens (**High Priority**) +2. Tampering with stored API requests and collections (**High Priority**) +3. Local data security and encryption (**Medium Priority**) +4. Code generation security vulnerabilities (**Medium Priority**) ## 1. System Overview ### 1.1 Architecture Context API Dash is a Flutter-based desktop and mobile application that: + - Runs locally on user devices (Windows, macOS, Linux, iOS, iPad) - Stores data locally using Hive database - Does not require backend servers or cloud services - Supports multiple API types: HTTP, GraphQL, SSE/Streaming, AI -- Generates integration code in 35+ languages/libraries +- Generates integration code in 20+ languages/libraries - Imports collections from Postman, cURL, Insomnia, OpenAPI, HAR formats -- Integrates with AI models via Ollama for API testing assistance +- Integrates with AI models via Ollama or cloud providers for API testing assistance ### 1.2 Key Components ``` ┌──────────────────────────────────────────────────────────┐ -│ User Interface Layer │ +│ User Interface Layer │ │ (Flutter Widgets, Screens, Request/Response Viewers) │ └──────────────────────────────────────────────────────────┘ │ ┌──────────────────────────────────────────────────────────┐ -│ Application Logic Layer │ +│ Application Logic Layer │ │ (Providers, Services, Models, State Management) │ └──────────────────────────────────────────────────────────┘ │ @@ -52,7 +43,7 @@ API Dash is a Flutter-based desktop and mobile application that: └─────────────┴──────────────┴──────────────┴──────────────┘ │ ┌──────────────────────────────────────────────────────────┐ -│ Operating System │ +│ Operating System │ │ (File System, Network Stack, Keychain) │ └──────────────────────────────────────────────────────────┘ ``` @@ -65,7 +56,7 @@ API Dash is a Flutter-based desktop and mobile application that: 4. **Response Handling** → Display/store API responses (including multimedia) 5. **Code Generation** → Transform requests into code snippets 6. **Export/Import** → HAR, Postman, Insomnia, OpenAPI formats -7. **AI Integration** → Send prompts to local Ollama instance for assistance +7. **AI Integration** → Send prompts to local Ollama instance or cloud providers for assistance ### 1.4 Trust Boundaries @@ -73,38 +64,42 @@ API Dash is a Flutter-based desktop and mobile application that: - **Network Boundary**: Outbound connections to user-specified APIs - **File System Boundary**: Local storage for collections, history, settings - **Process Boundary**: Flutter app process with OS-level isolation -- **AI Service Boundary**: Optional external connection to local Ollama instance +- **AI Service Boundary**: Optional external connection to local Ollama instance or user-specified cloud AI model provider(s) ---- - -## 2. STRIDE Threat Analysis +## 2. Threat Modeling (STRIDE) ### 2.1 Spoofing Identity (S) #### Threat S.1: Impersonation of API Endpoints + **Description**: Attacker could intercept or redirect API requests to malicious endpoints through DNS poisoning, man-in-the-middle attacks, or malicious URL manipulation. **Attack Vectors**: + - DNS hijacking redirecting legitimate API domains to attacker-controlled servers - Modified hosts file on compromised systems - Malicious proxy configuration - SSL/TLS stripping attacks **Impact**: HIGH + - Credential theft if authentication tokens are sent to malicious endpoints - Sensitive data exfiltration - Malware delivery through malicious responses **Affected Components**: + - Network layer (HTTP client in `packages/better_networking`) - Request execution services - SSL/TLS verification **Existing Mitigations**: + - Flutter's HTTP client uses system SSL/TLS certificates - HTTPS validation by underlying platform (iOS/Android/Desktop) **Recommended Additional Mitigations**: + 1. Implement certificate pinning for known critical APIs (optional feature) 2. Add visual indicators for HTTPS vs HTTP connections 3. Warn users when making requests to non-HTTPS endpoints @@ -112,34 +107,35 @@ API Dash is a Flutter-based desktop and mobile application that: 5. Implement HSTS (HTTP Strict Transport Security) awareness 6. Add option to verify server certificates explicitly -**Priority**: HIGH -**Effort**: MEDIUM - ---- - #### Threat S.2: Spoofing of Imported Collections + **Description**: Malicious actors could distribute modified collection files (HAR, Postman, etc.) that contain malicious URLs or scripts. **Attack Vectors**: + - Social engineering users to import malicious collections - Compromised collection sharing platforms - Man-in-the-middle during collection download **Impact**: MEDIUM + - Unintended API requests to malicious endpoints - Potential code injection in collection metadata - Credential leakage if malicious URLs are designed to capture tokens **Affected Components**: + - Import services (`lib/importer`, `packages/postman`, `packages/har`) - Collection parser modules - File selector dialogs **Existing Mitigations**: + - User explicitly chooses files to import - No automatic execution of imported requests **Recommended Additional Mitigations**: + 1. Validate and sanitize imported collection data 2. Display security warnings before importing from untrusted sources 3. Implement collection integrity verification (checksums/signatures) @@ -147,73 +143,75 @@ API Dash is a Flutter-based desktop and mobile application that: 5. Add "safe mode" import that strips potentially dangerous elements 6. Provide collection preview before full import -**Priority**: MEDIUM -**Effort**: MEDIUM - ---- - #### Threat S.3: AI/LLM Model Impersonation -**Description**: If using external AI services (Ollama), attacker could impersonate the AI endpoint or model. + +**Description**: If using external AI services, attacker could impersonate the AI endpoint or model. **Attack Vectors**: + - Malicious Ollama server running on localhost - Modified Ollama client configuration - DNS redirection of AI service endpoints **Impact**: LOW-MEDIUM + - Malicious code suggestions or API configurations - Information disclosure to unauthorized AI services - Manipulation of AI-generated test scenarios **Affected Components**: + - AI integration services (`lib/dashbot`, `packages/genai`) - Ollama client integration - Model management system **Existing Mitigations**: + - Ollama typically runs locally - User controls AI service endpoints **Recommended Additional Mitigations**: + 1. Verify Ollama service authenticity before sending data 2. Allow users to review/approve AI-generated requests before execution 3. Display clear indicators of AI service provider 4. Implement option to disable AI features entirely 5. Add warnings about sensitive data in AI prompts -**Priority**: LOW -**Effort**: LOW - ---- - ### 2.2 Tampering (T) #### Threat T.1: Local Data Store Tampering + **Description**: Attacker with file system access could modify Hive database files containing API requests, credentials, and collections. **Attack Vectors**: + - Direct file system access on compromised devices - Malware with file modification capabilities - Physical access to unlocked device - Backup/restore attacks with modified data files **Impact**: HIGH + - Injection of malicious API requests - Modification of stored credentials - Alteration of request history for covering tracks - Insertion of malicious code in templates **Affected Components**: + - Hive database storage (`lib/services/hive_services.dart`) - Data persistence layer - Settings and preferences storage - File system access layers **Existing Mitigations**: + - OS-level file permissions protect data files - Flutter app runs in sandboxed environment on mobile **Recommended Additional Mitigations**: + 1. Implement integrity verification for Hive database files (checksums/HMAC) 2. Encrypt sensitive data at rest (credentials, tokens, secrets) 3. Add tamper detection mechanisms with user alerts @@ -222,35 +220,36 @@ API Dash is a Flutter-based desktop and mobile application that: 6. Add file-level encryption for workspace directories 7. Implement audit logging for data modifications -**Priority**: HIGH -**Effort**: HIGH - ---- - #### Threat T.2: Request Parameter Injection + **Description**: Malicious input in request fields could lead to injection attacks (SQL injection, command injection) on target APIs. **Attack Vectors**: + - Crafted input in URL, headers, body, query parameters - Injection through environment variables - Malicious code in code generation templates **Impact**: MEDIUM + - Compromise of target API systems - Unintended API behavior - Security testing tool misuse for malicious purposes **Affected Components**: + - Request editor UI components - Parameter handling logic - Code generation templates - Environment variable substitution **Existing Mitigations**: + - Application doesn't execute requests automatically - User explicitly triggers API calls **Recommended Additional Mitigations**: + 1. Input validation and sanitization warnings 2. Display security notices about injection risks 3. Provide "safe mode" with automatic encoding @@ -258,34 +257,35 @@ API Dash is a Flutter-based desktop and mobile application that: 5. Implement request review/approval workflow 6. Include security testing guidelines in documentation -**Priority**: MEDIUM -**Effort**: LOW - ---- - #### Threat T.3: Code Generation Template Tampering + **Description**: Modification of code generation templates could inject malicious code into generated snippets. **Attack Vectors**: + - Direct modification of template files on disk - Malicious template imports/extensions - Exploiting template engine vulnerabilities (Jinja) **Impact**: HIGH + - Malicious code in generated snippets used in production - Supply chain attacks if developers share generated code - Backdoors in generated authentication code **Affected Components**: + - Code generation system (`lib/codegen`, `lib/templates`) - Template engine (Jinja) - Template storage and loading mechanisms **Existing Mitigations**: + - Templates are part of application bundle - User doesn't typically modify templates directly **Recommended Additional Mitigations**: + 1. Sign and verify integrity of template files 2. Implement template sandboxing 3. Validate generated code against security patterns @@ -293,69 +293,71 @@ API Dash is a Flutter-based desktop and mobile application that: 5. Provide code generation audit trail 6. Lock down template directory with strict permissions -**Priority**: MEDIUM -**Effort**: MEDIUM - ---- - #### Threat T.4: Exported Collection Tampering + **Description**: Exported HAR/collection files could be modified by attackers and re-imported. **Attack Vectors**: + - Intercepting exported files during sharing - Malicious modification of version-controlled collections - Man-in-the-middle during file transfer **Impact**: MEDIUM + - Re-import of tampered collections - Distribution of malicious API configurations - Credential theft through modified requests **Affected Components**: + - Export functionality - File system operations - Import validation **Existing Mitigations**: + - User controls export/import workflow **Recommended Additional Mitigations**: + 1. Digital signatures for exported collections 2. Integrity verification during import 3. Version tracking with change detection 4. Encrypted exports for sensitive collections 5. Warning on import if signatures don't match -**Priority**: MEDIUM -**Effort**: MEDIUM - ---- - ### 2.3 Repudiation (R) #### Threat R.1: No Audit Trail for API Requests + **Description**: Users can deny making specific API requests as there's no cryptographically secure audit trail. **Attack Vectors**: + - User makes malicious API requests and denies responsibility - Deletion or modification of request history - Lack of non-repudiation mechanisms **Impact**: MEDIUM + - Inability to prove which user made specific requests - Compliance issues in regulated environments - Difficulty in forensic investigations **Affected Components**: + - History service (`lib/services/history_service.dart`) - Request execution logic - Logging mechanisms **Existing Mitigations**: + - Request history is stored locally - Timestamps on request history **Recommended Additional Mitigations**: + 1. Implement secure audit logging with integrity protection 2. Add optional cryptographic signing of requests (timestamp + hash) 3. Provide export of audit logs for compliance @@ -363,34 +365,35 @@ API Dash is a Flutter-based desktop and mobile application that: 5. Add user activity tracking for sensitive operations 6. Optional integration with SIEM systems for enterprises -**Priority**: LOW-MEDIUM -**Effort**: MEDIUM - ---- - #### Threat R.2: History Manipulation + **Description**: Users could manipulate or delete request history to hide malicious activities. **Attack Vectors**: + - Direct deletion of history entries through UI - Modification of history database files - Clearing history to remove evidence **Impact**: MEDIUM + - Loss of audit trail - Inability to track malicious activities - Compliance violations **Affected Components**: + - History service and providers - Hive database for history storage - History UI components **Existing Mitigations**: + - History auto-clear can be configured - History is stored persistently **Recommended Additional Mitigations**: + 1. Implement append-only history log option 2. Add protected history mode requiring authentication to delete 3. Create tamper-evident logging mechanisms @@ -398,17 +401,14 @@ API Dash is a Flutter-based desktop and mobile application that: 5. Add retention policies with enforcement 6. Implement history backup before deletion -**Priority**: LOW -**Effort**: MEDIUM - ---- - ### 2.4 Information Disclosure (I) #### Threat I.1: Exposure of API Credentials in Local Storage + **Description**: API keys, tokens, passwords stored in Hive database are vulnerable to disclosure. **Attack Vectors**: + - Malware reading application data files - Physical access to unlocked device - Backup files containing unencrypted credentials @@ -416,12 +416,14 @@ API Dash is a Flutter-based desktop and mobile application that: - Insecure file permissions on workspace folders **Impact**: CRITICAL + - Unauthorized access to user's APIs and services - Data breaches on connected services - Financial losses from API abuse - Compromise of production systems **Affected Components**: + - Request models storing auth credentials - Environment variable storage (secrets) - Settings containing API configurations @@ -429,11 +431,13 @@ API Dash is a Flutter-based desktop and mobile application that: - Memory storage of sensitive data **Existing Mitigations**: + - OS-level file permissions - Application sandboxing on mobile platforms **Recommended Additional Mitigations**: -1. **CRITICAL**: Implement encryption at rest for all credentials + +1. Implement encryption at rest for all credentials (**CRITICAL**) 2. Use OS credential storage (Keychain on macOS/iOS, Credential Manager on Windows, Secret Service on Linux) 3. Encrypt Hive database with user-provided passphrase 4. Clear sensitive data from memory after use @@ -443,37 +447,38 @@ API Dash is a Flutter-based desktop and mobile application that: 8. Implement automatic credential rotation reminders 9. Add data classification labels (sensitive/non-sensitive) -**Priority**: CRITICAL -**Effort**: HIGH - ---- - #### Threat I.2: Response Data Containing Sensitive Information + **Description**: API responses may contain PII, secrets, or sensitive business data stored locally without encryption. **Attack Vectors**: + - Unauthorized access to history/response cache - Malware scanning local databases - Accidental sharing of workspace folders - Forensic data recovery from deleted files **Impact**: HIGH + - PII exposure leading to privacy violations - Exposure of business-critical information - Regulatory compliance violations (GDPR, CCPA) - Reputational damage **Affected Components**: + - Response storage in history - Request/response caching - Downloaded response files - Screenshot/export features **Existing Mitigations**: + - Data stored locally only - User controls data retention **Recommended Additional Mitigations**: + 1. Encrypt stored responses containing sensitive data 2. Implement data retention policies with auto-deletion 3. Add response data classification options @@ -483,35 +488,36 @@ API Dash is a Flutter-based desktop and mobile application that: 7. Secure deletion (overwrite) when removing history 8. Add option to exclude response bodies from history -**Priority**: HIGH -**Effort**: MEDIUM - ---- - #### Threat I.3: Logging Sensitive Information + **Description**: Debug logs, error messages, or analytics could inadvertently expose sensitive data. **Attack Vectors**: + - Verbose logging including credentials in URLs - Stack traces containing sensitive data - Crash reports sent with sensitive context - Console logs on shared/public displays **Impact**: MEDIUM + - Credential disclosure through logs - Exposure of API internal details - Data leakage through error messages **Affected Components**: + - Logging infrastructure - Error handling and reporting - Debug mode operations - Crash analytics **Existing Mitigations**: + - Production builds have minimal logging **Recommended Additional Mitigations**: + 1. Implement credential redaction in all logs 2. Add sensitive data detection and masking 3. Create separate log levels with security considerations @@ -520,34 +526,35 @@ API Dash is a Flutter-based desktop and mobile application that: 6. Review all log statements for sensitive data exposure 7. Add opt-in for detailed logging with warnings -**Priority**: MEDIUM -**Effort**: LOW - ---- - #### Threat I.4: Screenshot/Screen Recording Exposure + **Description**: Sensitive data visible in UI could be captured through screenshots, screen recordings, or shoulder surfing. **Attack Vectors**: + - Screen sharing during video calls - Screenshot/screen recording malware - Shoulder surfing in public spaces - Screen capture utilities **Impact**: MEDIUM + - Credential exposure through visual capture - API key disclosure in UI - Sensitive response data visible to unauthorized parties **Affected Components**: + - All UI components displaying sensitive data - Request/response viewers - Environment variable editors **Existing Mitigations**: + - None specific **Recommended Additional Mitigations**: + 1. Implement "privacy mode" that masks sensitive fields 2. Add screenshot blocking for sensitive screens (mobile) 3. Provide credential masking in UI (show/hide toggle) @@ -555,34 +562,35 @@ API Dash is a Flutter-based desktop and mobile application that: 5. Implement blur overlay for sensitive content when app is backgrounded 6. Add user education about screenshot risks -**Priority**: MEDIUM -**Effort**: MEDIUM - ---- - #### Threat I.5: Clipboard Data Leakage + **Description**: Sensitive data copied to clipboard could be accessed by malicious applications. **Attack Vectors**: + - Clipboard monitoring malware - Other applications reading clipboard - Clipboard history features in OS - Cloud clipboard sync exposing credentials **Impact**: MEDIUM + - Credential theft from clipboard - Token/key exposure - Sensitive response data leakage **Affected Components**: + - Copy/paste functionality - Code generation copy features - Response data copying **Existing Mitigations**: + - Standard OS clipboard protections **Recommended Additional Mitigations**: + 1. Implement auto-clear clipboard after timeout 2. Add warnings when copying sensitive data 3. Provide option to disable clipboard for sensitive fields @@ -590,34 +598,35 @@ API Dash is a Flutter-based desktop and mobile application that: 5. Avoid copying credentials to clipboard automatically 6. Add notification when sensitive data is copied -**Priority**: LOW-MEDIUM -**Effort**: LOW - ---- - #### Threat I.6: Exported Collection Data Exposure + **Description**: Exported HAR, Postman, or other collection files may contain sensitive credentials and data. **Attack Vectors**: + - Unencrypted export files - Accidental sharing of exports with credentials - Version control commits with sensitive exports - Cloud storage of unprotected exports **Impact**: HIGH + - Credential exposure through shared files - API configuration disclosure - Secret tokens in version control history **Affected Components**: + - Export functionality - Collection serialization - File save operations **Existing Mitigations**: + - User controls export process **Recommended Additional Mitigations**: + 1. Warn users before exporting with credentials 2. Provide option to exclude sensitive data from exports 3. Encrypt exported files with password protection @@ -626,39 +635,40 @@ API Dash is a Flutter-based desktop and mobile application that: 6. Implement "safe export" mode for sharing 7. Add .gitignore recommendations in documentation -**Priority**: HIGH -**Effort**: MEDIUM - ---- - ### 2.5 Denial of Service (DoS) #### Threat D.1: Local Resource Exhaustion + **Description**: Malicious or poorly configured requests could exhaust local system resources. **Attack Vectors**: + - Very large response bodies consuming disk space - Infinite loops in request sequences - Memory exhaustion from large collections - CPU exhaustion from complex code generation **Impact**: MEDIUM + - Application crashes or freezes - System instability - Data loss from unexpected terminations - Poor user experience **Affected Components**: + - Response handling and storage - Collection management - Code generation engine - Memory management **Existing Mitigations**: + - Flutter framework memory management - OS-level resource limits **Recommended Additional Mitigations**: + 1. Implement response size limits with warnings 2. Add timeout mechanisms for long-running operations 3. Implement streaming for large responses @@ -674,29 +684,35 @@ API Dash is a Flutter-based desktop and mobile application that: --- #### Threat D.2: Malicious Response Processing + **Description**: Crafted API responses could trigger resource exhaustion in parsing/rendering. **Attack Vectors**: + - Extremely large JSON/XML responses - Deeply nested data structures causing parser issues - Malformed multimedia content causing decoder crashes - Billion laughs attack in XML responses **Impact**: MEDIUM + - Application crash or hang - UI freezing - Data corruption **Affected Components**: + - Response parsers - JSON/XML/YAML viewers - Multimedia rendering components - Syntax highlighters **Existing Mitigations**: + - Flutter framework handles most edge cases **Recommended Additional Mitigations**: + 1. Implement response size validation before processing 2. Add depth limits for nested data structures 3. Implement timeout for parsing operations @@ -712,30 +728,36 @@ API Dash is a Flutter-based desktop and mobile application that: --- #### Threat D.3: File System DoS -**Description**: Continuous operations could fill up disk space or exceed inode limits. + +**Description**: Continuous operations could fill up disk space or tree node limits. **Attack Vectors**: + - Excessive history retention - Large response body downloads - Uncontrolled log file growth - Multiple workspace folders with duplicated data **Impact**: LOW-MEDIUM + - System-wide storage exhaustion - Application malfunction - Data loss from full disk **Affected Components**: + - History storage - Download functionality - Workspace management - Logging systems **Existing Mitigations**: + - History auto-clear feature - User controls downloads **Recommended Additional Mitigations**: + 1. Implement disk space monitoring 2. Add storage quota management 3. Automatic cleanup of old data @@ -744,37 +766,38 @@ API Dash is a Flutter-based desktop and mobile application that: 6. Add storage usage dashboard 7. Automatic log rotation -**Priority**: LOW -**Effort**: LOW - ---- - ### 2.6 Elevation of Privilege (E) #### Threat E.1: Code Injection via Template Engine + **Description**: Template engine vulnerabilities could allow code execution through crafted templates. **Attack Vectors**: + - Server-Side Template Injection (SSTI) in Jinja templates - Malicious template syntax - Exploiting template engine vulnerabilities - Unsafe template rendering context **Impact**: HIGH + - Arbitrary code execution on user's device - File system access beyond application scope - Privilege escalation to user's account level **Affected Components**: + - Jinja template engine (`jinja: ^0.6.1`) - Code generation system - Template rendering context **Existing Mitigations**: + - Templates are bundled with application - No user-editable templates by default **Recommended Additional Mitigations**: + 1. Keep Jinja library updated to latest version 2. Implement template sandboxing with restricted context 3. Validate and sanitize template inputs @@ -783,36 +806,37 @@ API Dash is a Flutter-based desktop and mobile application that: 6. Implement Content Security Policy for templates 7. Add template execution monitoring -**Priority**: HIGH -**Effort**: MEDIUM - ---- - #### Threat E.2: Unsafe Deserialization + **Description**: Deserializing untrusted data from imports or database could lead to code execution. **Attack Vectors**: + - Malicious HAR file imports - Crafted Postman/Insomnia collections - Modified Hive database files - Exploiting serialization vulnerabilities in Dart **Impact**: HIGH + - Remote code execution - Privilege escalation - System compromise **Affected Components**: + - Import parsers - Hive database deserialization - JSON deserialization - Collection parsers **Existing Mitigations**: + - Dart's type safety - Structured data parsing **Recommended Additional Mitigations**: + 1. Implement strict input validation on all imports 2. Use safe deserialization libraries 3. Validate object types after deserialization @@ -821,35 +845,36 @@ API Dash is a Flutter-based desktop and mobile application that: 6. Add integrity checks before deserialization 7. Limit deserializable classes to known types -**Priority**: HIGH -**Effort**: MEDIUM - ---- - #### Threat E.3: Dependency Vulnerabilities + **Description**: Vulnerable third-party packages could introduce privilege escalation vectors. **Attack Vectors**: + - Known CVEs in dependencies - Supply chain attacks on packages - Malicious package updates - Transitive dependency vulnerabilities **Impact**: VARIES (LOW to CRITICAL) + - Arbitrary code execution - Data theft - Privilege escalation **Affected Components**: + - All third-party dependencies (45+ packages) - Package management (pubspec.yaml) - Build system **Existing Mitigations**: + - Dependabot alerts (if enabled) - Regular dependency updates **Recommended Additional Mitigations**: + 1. **Enable GitHub Dependabot alerts** 2. Implement automated dependency scanning in CI/CD 3. Regular security audits of dependencies @@ -860,36 +885,37 @@ API Dash is a Flutter-based desktop and mobile application that: 8. Consider dependency license compliance 9. Regular vulnerability scanning with tools like `dart pub outdated` -**Priority**: HIGH -**Effort**: LOW-MEDIUM - ---- - #### Threat E.4: Native Code Vulnerabilities + **Description**: Platform-specific native code or FFI could have vulnerabilities leading to privilege escalation. **Attack Vectors**: + - Buffer overflows in native plugins - Memory corruption in FFI boundaries - Platform-specific vulnerabilities - Native library vulnerabilities (e.g., libcurl) **Impact**: HIGH + - System-level access - Sandbox escape - Device compromise **Affected Components**: + - Platform channels - Native plugins (window_manager, file_selector, etc.) - FFI implementations - Native media players (fvp, just_audio) **Existing Mitigations**: + - Flutter's sandboxing - Platform security features **Recommended Additional Mitigations**: + 1. Audit all native code integrations 2. Use memory-safe languages where possible 3. Implement bounds checking in FFI code @@ -904,28 +930,34 @@ API Dash is a Flutter-based desktop and mobile application that: --- #### Threat E.5: JavaScript Execution Context + **Description**: `flutter_js` package enables JavaScript execution which could be exploited. **Attack Vectors**: + - Malicious JavaScript in imported collections - XSS-like attacks through JS evaluation - Arbitrary code execution via JS engine - Exploiting JS engine vulnerabilities **Impact**: HIGH + - Arbitrary code execution - Sandbox escape - Access to sensitive application data **Affected Components**: + - `flutter_js: ^0.8.5` package - JavaScript runtime integration - Script execution contexts **Existing Mitigations**: + - Controlled JS execution context **Recommended Additional Mitigations**: + 1. Implement strict JavaScript sandboxing 2. Validate and sanitize all JS code before execution 3. Limit JS API access to safe operations only @@ -935,196 +967,135 @@ API Dash is a Flutter-based desktop and mobile application that: 7. Consider removing/replacing JS execution if not essential 8. Add execution timeout and resource limits -**Priority**: HIGH -**Effort**: MEDIUM +## 3. Recommended Security Controls ---- - -## 3. Risk Assessment Matrix - -### 3.1 Risk Scoring - -Risks are scored based on **Likelihood** × **Impact**: - -| Risk Level | Score Range | Color Code | -|------------|-------------|------------| -| Critical | 20-25 | 🔴 Red | -| High | 15-19 | 🟠 Orange | -| Medium | 8-14 | 🟡 Yellow | -| Low | 1-7 | 🟢 Green | - -**Likelihood Scale**: 1 (Very Unlikely) to 5 (Very Likely) -**Impact Scale**: 1 (Negligible) to 5 (Critical) - -### 3.2 Risk Summary Table - -| Threat ID | Category | Threat Name | Likelihood | Impact | Risk Score | Priority | -|-----------|----------|-------------|------------|--------|------------|----------| -| I.1 | Information Disclosure | API Credentials Exposure | 4 | 5 | 20 | 🔴 CRITICAL | -| E.3 | Elevation of Privilege | Dependency Vulnerabilities | 4 | 4 | 16 | 🔴 HIGH | -| T.1 | Tampering | Local Data Store Tampering | 3 | 5 | 15 | 🔴 HIGH | -| I.6 | Information Disclosure | Exported Collection Exposure | 4 | 4 | 16 | 🔴 HIGH | -| E.1 | Elevation of Privilege | Template Engine Code Injection | 2 | 5 | 10 | 🟠 HIGH | -| E.2 | Elevation of Privilege | Unsafe Deserialization | 2 | 5 | 10 | 🟠 HIGH | -| E.5 | Elevation of Privilege | JavaScript Execution | 2 | 5 | 10 | 🟠 HIGH | -| S.1 | Spoofing | API Endpoint Impersonation | 3 | 4 | 12 | 🟠 HIGH | -| I.2 | Information Disclosure | Sensitive Response Data | 4 | 4 | 16 | 🟠 HIGH | -| T.3 | Tampering | Code Generation Templates | 2 | 4 | 8 | 🟡 MEDIUM | -| S.2 | Spoofing | Imported Collection Spoofing | 3 | 3 | 9 | 🟡 MEDIUM | -| T.2 | Tampering | Request Parameter Injection | 3 | 3 | 9 | 🟡 MEDIUM | -| T.4 | Tampering | Exported Collection Tampering | 2 | 3 | 6 | 🟡 MEDIUM | -| I.3 | Information Disclosure | Logging Sensitive Data | 3 | 3 | 9 | 🟡 MEDIUM | -| I.4 | Information Disclosure | Screenshot Exposure | 3 | 3 | 9 | 🟡 MEDIUM | -| D.1 | Denial of Service | Resource Exhaustion | 3 | 3 | 9 | 🟡 MEDIUM | -| D.2 | Denial of Service | Malicious Response Processing | 2 | 3 | 6 | 🟡 MEDIUM | -| E.4 | Elevation of Privilege | Native Code Vulnerabilities | 2 | 4 | 8 | 🟡 MEDIUM | -| R.1 | Repudiation | No Audit Trail | 2 | 3 | 6 | 🟡 MEDIUM | -| R.2 | Repudiation | History Manipulation | 2 | 3 | 6 | 🟡 MEDIUM | -| I.5 | Information Disclosure | Clipboard Leakage | 2 | 2 | 4 | 🟢 LOW | -| S.3 | Spoofing | AI Model Impersonation | 2 | 2 | 4 | 🟢 LOW | -| D.3 | Denial of Service | File System DoS | 2 | 2 | 4 | 🟢 LOW | - ---- - -## 4. Recommended Security Controls - -### 4.1 Immediate Actions (Critical Priority) +### 3.1 Immediate Actions (Critical Priority) 1. **Implement Secure Credential Storage** + - Migrate from plain-text Hive storage to OS credential managers - Implement encryption at rest for all sensitive data - Use Keychain (macOS/iOS), Credential Manager (Windows), Secret Service (Linux) - - **Effort**: High | **Impact**: Critical reduction in I.1 + - **Effort**: High + - **Impact**: Critical reduction in I.1 2. **Enable Dependency Scanning** + - Activate GitHub Dependabot - Implement automated security scanning in CI/CD - Regular dependency updates and security patches - - **Effort**: Low | **Impact**: Addresses E.3 + - **Effort**: Low + - **Impact**: Addresses E.3 3. **Implement Data Integrity Verification** + - Add HMAC/checksums for Hive database files - Tamper detection for local storage - Integrity verification on app startup - - **Effort**: Medium | **Impact**: Addresses T.1 + - **Effort**: Medium + - **Impact**: Addresses T.1 4. **Secure Export Functionality** - Add warnings before exporting with credentials - Implement credential redaction options - Add export encryption options - - **Effort**: Medium | **Impact**: Addresses I.6 + - **Effort**: Medium + - **Impact**: Addresses I.6 -### 4.2 Short-term Actions (High Priority) +### 3.2 Short-term Actions (High Priority) 5. **Enhanced HTTPS/TLS Validation** + - Add certificate information display - Implement warnings for non-HTTPS endpoints - Optional certificate pinning - - **Effort**: Medium | **Impact**: Addresses S.1 + - **Effort**: Medium + - **Impact**: Addresses S.1 6. **JavaScript Sandboxing** + - Implement strict sandbox for flutter_js - Add user confirmation for script execution - Limit JS API access - - **Effort**: Medium | **Impact**: Addresses E.5 + - **Effort**: Medium + - **Impact**: Addresses E.5 7. **Template Security Hardening** + - Audit and sandbox Jinja templates - Implement template integrity verification - Regular security review of templates - - **Effort**: Medium | **Impact**: Addresses E.1 + - **Effort**: Medium + - **Impact**: Addresses E.1 8. **Import Validation** - Schema validation for all imports - Sanitization of imported data - Security warnings for untrusted imports - - **Effort**: Medium | **Impact**: Addresses E.2, S.2 + - **Effort**: Medium + - **Impact**: Addresses E.2, S.2 -### 4.3 Medium-term Actions +### 3.3 Medium-term Actions 9. **Response Data Protection** + - Implement encryption for stored responses - Add "incognito mode" for sensitive testing - Data retention policies with auto-deletion - - **Effort**: Medium | **Impact**: Addresses I.2 + - **Effort**: Medium + - **Impact**: Addresses I.2 10. **Privacy Mode Features** + - Credential masking in UI - Screenshot blocking on sensitive screens - Blur overlay when app backgrounded - - **Effort**: Medium | **Impact**: Addresses I.4 + - **Effort**: Medium + - **Impact**: Addresses I.4 11. **Audit and Logging** + - Implement secure audit trail - Credential redaction in logs - Optional append-only history mode - - **Effort**: Medium | **Impact**: Addresses R.1, R.2, I.3 + - **Effort**: Medium + - **Impact**: Addresses R.1, R.2, I.3 12. **Resource Management** - Response size limits - Memory usage monitoring - Graceful handling of large responses - - **Effort**: Medium | **Impact**: Addresses D.1, D.2 + - **Effort**: Medium + - **Impact**: Addresses D.1, D.2 -### 4.4 Long-term Actions +### 3.4 Long-term Actions 13. **Native Code Security Review** + - Audit all platform channel implementations - Security testing of FFI boundaries - Minimize native code dependencies - - **Effort**: High | **Impact**: Addresses E.4 + - **Effort**: High + - **Impact**: Addresses E.4 14. **Comprehensive Security Testing** + - Automated security testing in CI/CD - Regular penetration testing - Fuzzing for parsers and importers - - **Effort**: High | **Impact**: Addresses multiple threats + - **Effort**: High + - **Impact**: Addresses multiple threats 15. **Security Documentation** - Developer security guidelines - User security best practices - Incident response procedures - - **Effort**: Low | **Impact**: General security awareness + - **Effort**: Low + - **Impact**: General security awareness ---- +## 4. Security Architecture Recommendations -## 5. Assumptions and Constraints - -### 5.1 Security Assumptions - -1. **Local-First Design**: API Dash is primarily a local application without cloud backend -2. **User Trust**: Users are trusted to configure and use the application appropriately -3. **OS Security**: Underlying OS provides basic security (sandboxing, file permissions) -4. **No Authentication**: Application itself has no authentication mechanism -5. **Open Source**: All code is publicly visible for security review -6. **No Remote Control**: No remote management or control features - -### 5.2 Out of Scope - -The following are explicitly out of scope for this threat model: - -1. Physical security of user devices -2. User's network security and infrastructure -3. Security of target APIs being tested -4. Social engineering attacks against users -5. Insider threats from legitimate users -6. Legal/compliance aspects beyond technical controls -7. Third-party service security (Ollama, external APIs) - -### 5.3 Constraints - -1. **Open Source**: Cannot implement security through obscurity -2. **Cross-Platform**: Solutions must work across all supported platforms -3. **User Experience**: Security controls must not significantly degrade UX -4. **Backward Compatibility**: Must maintain data compatibility with existing users -5. **Resource Limitations**: Open source project with limited dedicated security resources -6. **Performance**: Security controls must not significantly impact performance - ---- - -## 6. Security Architecture Recommendations - -### 6.1 Secure-by-Default Configuration +### 4.1 Secure-by-Default Configuration ```dart // Example: Default secure settings @@ -1140,7 +1111,7 @@ class SecurityDefaults { } ``` -### 6.2 Defense in Depth Strategy +### 4.2 Defense in Depth Strategy ``` ┌─────────────────────────────────────────────────────────┐ @@ -1156,7 +1127,7 @@ class SecurityDefaults { └─────────────────────────────────────────────────────────┘ ``` -### 6.3 Secure Development Lifecycle Integration +### 4.3 Secure Development Lifecycle Integration 1. **Design Phase**: Security requirements and threat modeling 2. **Development**: Secure coding guidelines and code reviews @@ -1164,23 +1135,24 @@ class SecurityDefaults { 4. **Release**: Security validation, signed releases 5. **Maintenance**: Security patches, vulnerability management ---- +## 5. Security Testing Recommendations -## 7. Security Testing Recommendations - -### 7.1 Recommended Security Tests +### 5.1 Recommended Security Tests 1. **Static Analysis** + - SAST tools for Dart code - Dependency vulnerability scanning - Code quality and security linters 2. **Dynamic Analysis** + - Fuzzing for parsers (HAR, Postman, JSON, XML) - Memory leak detection - Runtime security monitoring 3. **Manual Testing** + - Penetration testing - Code review of security-critical components - Template injection testing @@ -1191,7 +1163,7 @@ class SecurityDefaults { - Privacy compliance (GDPR, CCPA) - Accessibility security testing -### 7.2 Security Test Cases +### 5.2 Security Test Cases ``` Test Case: Credential Storage Security @@ -1213,9 +1185,7 @@ Test Case: Export Security - Test integrity of exported files ``` ---- - -## 8. Incident Response Integration +## 6. Incident Response Integration This threat model should be used in conjunction with the **Incident Response Plan (IRP)** for: @@ -1224,11 +1194,7 @@ This threat model should be used in conjunction with the **Incident Response Pla 3. **Containment Strategies**: Mitigations guide incident containment 4. **Recovery Planning**: Recommended controls aid in recovery ---- - -## 9. Compliance and Regulatory Considerations - -### 9.1 Applicable Regulations +## 7. Compliance and Regulatory Considerations While API Dash is a developer tool, it may be subject to: @@ -1237,85 +1203,3 @@ While API Dash is a developer tool, it may be subject to: 3. **SOC 2**: For enterprise adoption 4. **ISO 27001**: Information security management 5. **OWASP**: Mobile and API security guidelines - -### 9.2 Security Requirements - -| Requirement | STRIDE Coverage | Status | -|-------------|-----------------|--------| -| Data Encryption | I.1, I.2, I.6 | Partially Implemented | -| Access Control | E.1-E.5 | Limited | -| Audit Logging | R.1, R.2 | Partially Implemented | -| Input Validation | T.2, S.2 | Partially Implemented | -| Secure Communications | S.1 | Partially Implemented | -| Incident Response | All | Documented Separately | - ---- - -## 10. Conclusion and Next Steps - -### 10.1 Summary - -API Dash has a solid foundation with local-first architecture and open-source transparency. However, several critical security improvements are needed, particularly around: - -1. **Credential and sensitive data encryption** (CRITICAL) -2. **Dependency vulnerability management** (HIGH) -3. **Data integrity verification** (HIGH) -4. **Secure export functionality** (HIGH) - -### 10.2 Recommended Action Plan - -**Phase 1 (0-3 months)**: Address critical priority items -- Implement secure credential storage -- Enable dependency scanning -- Add data integrity checks -- Secure export warnings - -**Phase 2 (3-6 months)**: Address high priority items -- HTTPS/TLS enhancements -- JavaScript sandboxing -- Template security -- Import validation - -**Phase 3 (6-12 months)**: Address medium/long-term items -- Response data protection -- Privacy features -- Comprehensive audit logging -- Security testing program - -### 10.3 Continuous Improvement - -This threat model should be: -- **Reviewed quarterly** for updates -- **Updated** when major features are added -- **Revised** after security incidents -- **Validated** through security testing -- **Shared** with the security community for feedback - ---- - -## 11. Document Control - -| Version | Date | Author | Changes | -|---------|------|--------|---------| -| 1.0 | December 2025 | Security Team | Initial STRIDE threat model | - -**Review Schedule**: Quarterly -**Next Review Date**: March 2026 -**Document Owner**: API Dash Security Team -**Classification**: Public - ---- - -## References - -1. [STRIDE Threat Modeling - Microsoft](https://learn.microsoft.com/en-us/previous-versions/commerce-server/ee823878(v=cs.20)) -2. [OWASP Mobile Security Testing Guide](https://owasp.org/www-project-mobile-security-testing-guide/) -3. [OWASP API Security Top 10](https://owasp.org/www-project-api-security/) -4. [CWE Top 25 Most Dangerous Software Weaknesses](https://cwe.mitre.org/top25/) -5. [Flutter Security Best Practices](https://docs.flutter.dev/security) -6. API Dash Repository: https://github.com/foss42/apidash -7. API Dash Security Policy: SECURITY.md - ---- - -**END OF STRIDE THREAT MODEL**