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LLM API Security Testing
LLM-APImedium complexityvulnerability assessment Category
Comprehensive security testing of LLM APIs for authentication bypasses, injection vulnerabilities, and access control issues.
Example Scenario
Testing reveals insecure direct object reference (IDOR) in Lunary LLM toolkit (CVE-2024-7474/7475, CVSS 9.1) allowing unauthorized access to other users' projects and data.
Testing Objectives
- Test API authentication mechanisms
- Validate access control implementations
- Assess rate limiting effectiveness
- Identify injection vulnerabilities
Defensive Strategies
- Strong authentication mechanisms
- Proper authorization checks
- Input validation and sanitization
- Rate limiting implementation
- API security monitoring
Key Features
- Authentication mechanism testing
- API endpoint enumeration
- Rate limiting validation
- Input sanitization testing
Use Cases
- LLM service security assessment
- API security validation
- Access control testing
- Rate limiting verification
Tools & Frameworks
Burp Suite API testing
OWASP ZAP
Postman security tests
Custom API fuzzing tools
GraphQL security scanners
Security Risks
Unauthorized data access
API abuse and resource exhaustion
Injection attacks
Authentication bypass
Data exfiltration
Ethical Guidelines
- •Only test APIs you own or have explicit permission to test
- •Respect rate limits and avoid DoS attacks
- •Report vulnerabilities to API providers
- •Do not access or modify unauthorized data
- •Follow API terms of service during testing
Remember: This information is for educational and defensive security purposes only. Always ensure you have proper authorization before testing any techniques.