The ) and } characters attempt to close existing function calls or brackets in the original SQL statement.
Security Audit Report: SQL Injection Vulnerability Critical / High Priority Location: Query Parameter {KEYWORD} 1. Vulnerability Summary {KEYWORD}) UNION ALL SELECT NULL,NULL#
Identify the database version and schema to plan a larger breach [1]. 4. Recommended Fixes The ) and } characters attempt to close
The input {KEYWORD}) UNION ALL SELECT NULL,NULL# is a classic payload. This specific string is designed to break out of a developer-defined query and append a UNION statement, allowing an attacker to retrieve data from other tables or probe the database structure [1]. 2. Technical Analysis {KEYWORD}) UNION ALL SELECT NULL,NULL#
The # character (used in MySQL/MariaDB) comments out the rest of the legitimate query, preventing syntax errors from trailing code [3]. 3. Potential Risk An attacker successfully using this technique can: