: Systems running Oracle Database where user input is not properly sanitized or prepared using parameterized queries. Remediation
The initial '{KEYWORD}' AND ... attempts to break out of a single-quoted string literal within a vulnerable SQL query. : : Systems running Oracle Database where user input
The attacker sees this error in the HTTP response. Because the error contains the 1 (the result of the subquery), the attacker knows the injection worked. : : Systems running Oracle Database where user input
The payload attempts to force the database to trigger an error message that contains specific data, which confirms the vulnerability and the database type. : : Systems running Oracle Database where user input
The payload injects a subquery: (SELECT (CASE WHEN (6957=6957) THEN 1 ELSE 0 END) FROM DUAL) . This is a "Boolean test" to see if the logic holds true. :
