SQL Injection - Union Based Scanner
Exploits UNION-based SQL injection to extract data from database tables.
What is SQL Injection - Union Based?
UNION-based SQL injection leverages the SQL UNION operator to combine results from the original query with results from an attacker-controlled query. This allows attackers to extract data from any table in the database by appending their own SELECT statements to the legitimate query.
Why is This Important?
UNION-based injection is extremely powerful because it allows direct data extraction in a single request. Attackers can retrieve entire tables of data quickly, including user credentials, payment information, and other sensitive records. It's faster than blind techniques and provides immediate results.
How It Works
1. Web Crawling
Intelligent crawling discovers all endpoints, forms, parameters, and dynamic content across your web application.
2. Payload Injection
AI-powered payloads test each input vector for web vulnerabilities with context-aware attack patterns.
3. Response Analysis
Advanced analysis detects vulnerability signatures in responses, confirming exploitability with proof-of-concept.
Key Capabilities
Industry-leading web security testing powered by AI, trusted by security teams worldwide for accurate vulnerability detection.
- Deep web crawling with JavaScript rendering support
- Context-aware payload generation for each parameter
- False positive elimination through response analysis
- OWASP Top 10 and CWE compliance mapping
- Seamless CI/CD and DevSecOps integration
Frequently Asked Questions
What conditions are needed for UNION injection?
The attacker must match the number of columns and compatible data types in both queries. The results must also be displayed somewhere in the application response.
How do attackers determine the number of columns?
They use ORDER BY with incrementing numbers until an error occurs, or inject UNION SELECT NULL,NULL,... adding NULLs until the query succeeds.
Can UNION injection access other databases?
Yes, if the database user has permissions, attackers can query other databases on the same server using fully qualified table names.
What's the NULL technique?
NULLs are compatible with any data type, so attackers use UNION SELECT NULL,NULL,... to find the right column count, then replace NULLs with actual data extraction queries.
Related Scanners
Ready to secure your application?
Start testing for sql injection - union based vulnerabilities today.
Get Started Free