Oracle | RAS: Real Application Security

Oracle Real Application Security (RAS) Version 12.1

General Information

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Purpose

Dependencies

DBA_ACL_NAME_MAP	DBA_XDS_ACL_REFRESH	DBMS_XS_PRINCIPALS
DBA_HOST_ACLS\|	DBA_XDS_ACL_REFSTAT	DBMS_XS_SESSIONS
DBA_NETWORK_ACLS	DBA_XDS_LATEST_ACL_REFSTAT	XS$ACE_TYPE
DBA_NETWORK_ACL_PRIVILEGES	DBA_XS_ACLS	DBMS_XS_SESSIONS_FFI
DBA_WALLET_ACLS	DBA_XS_ACL_PARAMETERS

RAS Functions

COLUMN_AUTH_INDICATOR	ORA_CHECK_PRIVILEGE	TO_ACLID
ORA_CHECK_ACL	ORA_GET_ACLIDS	XS_SYS_CONTEXT

RAS Packages

DBMS_XS_SESSIONS	XS_DATA_SECURITY	XS_NAMESPACE
XS_ACL	XS_DATA_SECURITY_UTIL	XS_PRINCIPAL
XS_ADMIN_UTIL	XS_DIAG	XS_SECURITY_CLASS

RAS Functions

COLUMN_AUTH_INDICATOR
Checks if the specified table column is authorized on a particular table row COLUMN_AUTH_INDICATOR(col) RETURN BOOLEAN;

TBD

ORA_CHECK_ACL

Checks if an application user has the queried application
privileges according to a list of ACLs ora_check_acl(XS_Operator IN HEX_NUMBER, arg2, arg3) RETURN BOOLEAN ORA_CHECK_ACL( acls IN RAW, (privileges IN VARCHAR(128))+) return NUMBER;

SELECT ora_check_acl(2147483661,  2147483653, NULL) FROM dual;

                           *

      ERROR at line 1:

      ORA-00932: inconsistent datatypes: expected BINARY got NUMBER

ORA_CHECK_PRIVILEGE

Checks if the specified system privileges have been granted to an application user

As can be seen in the demo at right I was unable to find a valid combination that would return a 1 ora_check_privilege( arg1 IN VARCHAR2, arg2 IN VARCHAR2) RETURN NUMBER;

SELECT ora_check_privilege('SYS', 'CREATE TABLE') FROM dual;

      

      SELECT ora_check_privilege('CREATE TABLE', 'SYS') FROM dual;

      

      SQL> SELECT ora_check_privilege('A', 'B', 'C', 'D','E','F','G','H')

        2  FROM dual;

      

      ORA_CHECK_PRIVILEGE('A','B','C','D','E','F','G','H')

      ----------------------------------------------------

                                                         0

ORA_GET_ACLIDS

Returns a list of ACL identifiers associated with an object instance of the
XDS-enabled tables for the current application user ORA_GET_ACLIDS ( table_alias IN VARCHAR2, privileges IN VARCHAR(128))+) RETURN RAW;

The example on page 10-4 of the docs is nonsense

TO_ACLID

Appears able to converts an unknown value, possibly an ACL name to an ACL_ID but, as in the demo at right, I can prove the function exits but not get it working properly to_aclid(<arg> IN VARCHAR2) RETURN VARCHAR2;

SELECT to_aclid(name)

      FROM xs$obj;

      FROM xs$obj

           *

      ERROR at line 2:

      ORA-46114: ACL name XSAUTHENTICATED not found.

      

      TO_ACLID(

      (acls IN VARCHAR(128))+)

      return NUMBER;

XS_SYS_CONTEXT (Introduced 11.1.0.6)

Retrieves the session attributes and the XS$GLOBAL_VAR namespace
attribute for the current application session

Known CONTEXT attributes:
CURRENT_XS_USER
SESSION_ID
SESSION_XS_USER_GUID xs_sys_context( namespace IN VARCHAR2 attribute IN VARCHAR2) RETURN VARCHAR2;

SQL> SELECT xs_sys_context('XS$SESSION','CURRENT_XS_USER')

        2  FROM dba_xs_users;

      

      XS_SYS_CONTEXT('XS$SESSION','CURRENT_XS_USER')

      -----------------------------------------------

      

      

      SQL> SELECT name

        2  FROM dba_xs_users

        3* WHERE name = xs_sys_context('XS$SESSION','CURRENT_XS_USER');

      

      no rows selected

From %$ORACLE_HOME/rdbms/admin SQL> DECLARE 2 sessID RAW(64); 3 BEGIN 4 dbms_xs_sessions.create_session('MORGAN', sessID, is_external=>TRUE); 5 dbms_output.put_line(sessID); 6* END; 7 / 1E72B33ED6E040AEAFB4896F81582932 SELECT xs_sys_context('XS$SESSION', 'SESSION_XS_USER_GUID') FROM dual; SELECT xs_sys_context('XS$SESSION', 'SESSION_ID') FROM dual;

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