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Once internal access is granted, executing internal enumeration helps map out privileges and find sensitive data. Basic System Information

If left ( "" ), the database can read and write files anywhere on the operating system, subject to OS-level file permissions. To verify this setting from an established SQL session: SHOW VARIABLES LIKE "secure_file_priv"; Use code with caution. Reading Arbitrary Files ( LOAD_FILE )

To help expand this guide for your specific scenario, what is the target MySQL server running on, what privilege level do you currently have, and are you trying to bypass a specific security restriction like secure_file_priv ? mysql hacktricks verified

If secure_file_priv permits, local files can be read using LOAD_FILE() : UNION SELECT 1, LOAD_FILE('/etc/passwd'), 3-- - Use code with caution. Writing Files (Achieving RCE via Web Shell)

HackTricks emphasizes various SQLi methods to bypass authentication or extract data. Reading Arbitrary Files ( LOAD_FILE ) To help

When you possess database administrator ( dba ) privileges but cannot access the web root to drop a shell, User Defined Functions (UDF) offer a reliable secondary path to execution. The UDF Exploitation Mechanism

Note: The output will often look like a string of random characters followed by the version number (e.g., 5.7.29-0ubuntu0.18.04.1 ). 2. Unauthenticated Enumeration When you possess database administrator ( dba )

UNION SELECT 1, '', 3 INTO OUTFILE '/var/www/html/shell.php'-- - Use code with caution. 5. Post-Exploitation and PrivEsc (UDF Exploitation)

Never run applications using the root database user. Create dedicated users with permissions restricted solely to the specific database and tables they require. Explicitly revoke the FILE privilege from non-admin accounts.

-- Read config files SELECT LOAD_FILE('/var/www/html/wp-config.php');