User Input Sanitizer Tester
Test user input strings against XSS, SQL injection, and other vulnerabilities. Validate input sanitization and security measures. Essential for web application security testing.
Security Best Practices
✓ Input Validation
- • Validate input on both client and server side
- • Use allowlists instead of blocklists
- • Implement proper data type validation
- • Set maximum input length limits
- • Validate input format with regex patterns
- • Sanitize input before processing
✓ Output Encoding
- • HTML encode output for web pages
- • URL encode data in URLs
- • Use context-appropriate encoding
- • Implement Content Security Policy
- • Use trusted sanitization libraries
- • Validate and sanitize rich text content
🔒 Database Security
- • Always use parameterized queries
- • Implement proper access controls
- • Use principle of least privilege
- • Regular security audits
- • Input validation for all queries
- • Escape special characters properly
🛡️ General Security
- • Implement defense in depth
- • Regular penetration testing
- • Keep dependencies updated
- • Monitor for security vulnerabilities
- • Use Web Application Firewalls
- • Implement proper logging and monitoring
Vulnerability Types Reference
XSS (Cross-Site Scripting)
Description: Injection of malicious scripts into web pages
Impact: Session hijacking, data theft, malware distribution
Prevention: Input validation, output encoding, CSP headers
SQL Injection
Description: Injection of malicious SQL code into database queries
Impact: Data breach, data manipulation, system compromise
Prevention: Parameterized queries, input validation, least privilege
Command Injection
Description: Execution of arbitrary system commands
Impact: System compromise, data theft, service disruption
Prevention: Input validation, avoid system calls, sandboxing
LDAP Injection
Description: Manipulation of LDAP queries
Impact: Unauthorized access, information disclosure
Prevention: Input validation, LDAP escaping, parameterized queries
NoSQL Injection
Description: Injection attacks against NoSQL databases
Impact: Data manipulation, unauthorized access
Prevention: Query builders, input validation, type checking
Path Traversal
Description: Access to files outside intended directory
Impact: Unauthorized file access, information disclosure
Prevention: Path validation, sandboxing, access controls
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