Nessus Scan failed: 5.2 Ensure ‘file_priv’ Is Not Set to ‘Y’ for Non-Administrative Users

Taking a look at the failure
Description:
The File_priv privilege found in the mysql.user table is used to allow or disallow a user from reading and writing files on the server host. Any user with the File_priv right granted has the abilit… Continue reading Nessus Scan failed: 5.2 Ensure ‘file_priv’ Is Not Set to ‘Y’ for Non-Administrative Users

What is the wisdom of using the ASCII function in exploit SQLi?

I mean, I can exploit the vulnerability using a substring function and without using an ASCII function like:
SELECT username FROM users WHERE id = 1 AND (SELECT substring(password,1,1) FROM users WHERE username = ‘admin’ ) = ‘a’;
And I ca… Continue reading What is the wisdom of using the ASCII function in exploit SQLi?