Penetration testers frequently utilize various techniques to abuse UNION SQL injection weaknesses. A common strategy involves discovering the number of fields provided by the original query, often through error-based approaches or covert listing. Once the number is known, malicious SQL queries can be crafted to join the results of the original q… Read More

Error-based SQL injection is a subtle yet powerful technique where attackers tweak application input to trigger specific error messages that reveal valuable database information. A common tactic in this realm is exploiting the MERGED operator, which allows combining results from multiple SELECT queries. By carefully crafting malicious input, att… Read More

Union-based SQL injection represents a particularly critical attack vector, allowing threat actors to combine the results of multiple retrieval statements into a single output. The exploitation typically involves crafting SQL queries that utilize the UNION operator to append data from unauthorized tables or even entirely different databases. Thi… Read More