EU-Utility/SECURITY_AUDIT_REPORT.md

EU-Utility Security Audit Report

Date: 2026-02-14 Auditor: Security Auditor Agent Scope: /home/impulsivefps/.openclaw/workspace/projects/EU-Utility/

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Executive Summary

The EU-Utility codebase contains several security vulnerabilities, primarily around path traversal, insufficient input validation, and unsafe plugin loading. A hardened version exists for some components (data_store_secure.py, screenshot_secure.py) but the original vulnerable versions are still in use.

Overall Risk Level: MEDIUM-HIGH

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Findings

🔴 CRITICAL: Path Traversal in data_store.py

File: core/data_store.py
Severity: HIGH
Status: ⚠️ VULNERABLE (Secure version exists but unused)

Issue: The _get_plugin_file() method uses simple string replacement for sanitization:

def _get_plugin_file(self, plugin_id: str) -> Path:
    safe_name = plugin_id.replace(".", "_").replace("/", "_").replace("\\", "_")
    return self.data_dir / f"{safe_name}.json"

Attack Vector: A malicious plugin could use plugin_id="../../../etc/passwd" to escape the data directory.

Fix: Replace with data_store_secure.py which includes:

• Proper path validation using PathValidator
• Resolved path verification against base path
• Security error handling

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🔴 HIGH: Path Traversal in screenshot.py

File: core/screenshot.py
Severity: HIGH
Status: ⚠️ VULNERABLE (Secure version exists but unused)

Issue: The save_screenshot() method accepts arbitrary filenames without validation:

def save_screenshot(self, image: Image.Image, filename: Optional[str] = None) -> Path:
    if filename is None:
        timestamp = datetime.now().strftime("%Y-%m-%d_%H-%M-%S_%f")[:-3]
        filename = f"screenshot_{timestamp}.{self._format.lower()}"
    
    # NO VALIDATION HERE
    filepath = self._save_path / filename
    image.save(filepath, ...)

Attack Vector: A plugin could call save_screenshot(image, "../../../malware.exe") to write outside the screenshots directory.

Fix: Replace with screenshot_secure.py which includes:

• PathValidator.sanitize_filename() usage
• Resolved path verification
• Security error handling

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🟡 MEDIUM: Insufficient HTTP Client Security

File: core/http_client.py
Severity: MEDIUM
Status: ⚠️ PARTIALLY VULNERABLE

Issues:

1. No SSL certificate verification control
2. post() method allows caching of POST requests (unusual/unsafe)
3. No URL scheme validation (could allow file:// protocol)

Recommendations:

• Always verify SSL certificates
• Add URL scheme whitelist (http://, https://)
• Disable caching for POST by default

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🟡 MEDIUM: Unvalidated Clipboard Storage

File: core/clipboard.py
Severity: MEDIUM
Status: ⚠️ VULNERABLE

Issues:

1. No maximum length validation for clipboard text
2. No sanitization before saving to history file
3. History file stored without encryption

Attack Vector: A malicious actor could copy extremely large text (GBs) causing DoS via memory exhaustion.

Recommendations:

• Add max length limits (e.g., 10KB per entry, 1000 entries max)
• Sanitize text before storage
• Consider encrypting sensitive clipboard history

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🟠 HIGH: Unsafe Plugin Loading

File: core/plugin_manager.py
Severity: HIGH
Status: ⚠️ VULNERABLE

Issues:

1. Uses exec_module() which executes arbitrary Python code
2. No signature verification for plugins
3. No sandboxing or permission system
4. No validation of plugin metadata

Attack Vector: A malicious plugin in the user_plugins directory could execute arbitrary code with user privileges.

Recommendations:

• Implement plugin signature verification
• Add permission manifest system for plugins
• Consider using restricted Python execution environment
• Validate plugin metadata against schema

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🟡 LOW: Subprocess Usage

Files: Multiple (window_manager.py, notifications.py, spotify_controller.py, game_reader.py)
Severity: LOW
Status: ✅ GENERALLY SAFE

Analysis: Subprocess usage found but:

• Uses hardcoded, safe commands
• No user input passed to shell commands
• Timeout protections in place

No immediate action required but continue to audit any new subprocess additions.

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🟢 LOW: No Hardcoded Credentials Found

Status: ✅ PASS

Searched for:

• API keys
• Passwords
• Authentication tokens
• Secret keys

None found in the codebase. Good security practice maintained.

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Security Improvements Made

1. data_store_secure.py (EXISTS)

• Path traversal protection via PathValidator
• Input validation for plugin IDs and keys
• Data structure validation
• Secure backup path validation

2. screenshot_secure.py (EXISTS)

• Filename sanitization
• Path resolution validation
• Region coordinate validation
• Window handle validation

3. security_utils.py (EXISTS)

• PathValidator class for path sanitization
• InputValidator class for input validation
• DataValidator class for data structure validation
• IntegrityChecker for HMAC/hash operations

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Recommendations

Immediate Actions (High Priority)

1. Replace vulnerable modules with secure versions:

   mv core/data_store.py core/data_store_vulnerable.py
   mv core/data_store_secure.py core/data_store.py
   
   mv core/screenshot.py core/screenshot_vulnerable.py
   mv core/screenshot_secure.py core/screenshot.py
   

2. Add clipboard validation:

   • Implement max text length limits
   • Sanitize clipboard content

3. Implement plugin security:

   • Add plugin signature verification
   • Create permission manifest system

Medium Priority

4. Enhance HTTP client:

   • Add URL scheme validation
   • Enable SSL verification by default
   • Add request/response size limits

5. Add audit logging:

   • Log all file operations outside data directories
   • Log plugin loading/unloading
   • Log security violations

Low Priority

6. Implement data encryption:

   • Encrypt sensitive plugin data at rest
   • Encrypt clipboard history

7. Add rate limiting:

   • Rate limit screenshot captures
   • Rate limit API calls per plugin

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Security Test Cases

# Test Path Traversal Protection
def test_path_traversal():
    # Should raise SecurityError
    try:
        data_store._get_plugin_file("../../../etc/passwd")
        assert False, "Path traversal not blocked!"
    except SecurityError:
        pass  # Expected

# Test Filename Sanitization
def test_filename_sanitization():
    # Should sanitize dangerous characters
    safe = PathValidator.sanitize_filename("../../../test.txt")
    assert ".." not in safe
    assert "/" not in safe

# Test Input Validation
def test_clipboard_limits():
    # Should reject oversized input
    large_text = "x" * (10 * 1024 * 1024)  # 10MB
    result = clipboard_manager.copy(large_text)
    assert result == False  # Should fail

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Conclusion

The EU-Utility project has a solid security foundation with security_utils.py providing comprehensive validation utilities. However, the original vulnerable modules are still in use instead of the hardened versions.

Priority 1: Switch to the secure versions of data_store and screenshot modules.

Priority 2: Implement plugin sandboxing and signature verification.

With these changes, the project risk level can be reduced from MEDIUM-HIGH to LOW-MEDIUM.

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Report generated by Security Auditor Agent
EU-Utility Security Audit 2026