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I'm trying to read the content of /etc/passwd from mysql using the following query: select load_file("/etc/passwd"); However, I always seem to get NULL as the output.

mysql> select load_file("/etc/passwd");
+--------------------------+
| load_file("/etc/passwd") |
+--------------------------+
| NULL                     |
+--------------------------+
1 row in set (0.00 sec)

Is there a reason for this? the permission for the passwd file is the default permission.

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1 Answer 1

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If the SELECT works for you, then it will work for a hacker.

Think twice about breaking through this security barrier.

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