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Database Vault Marco Alamanni. Why Database Vault?. Compliance to regulations such as Sarbanes-Oxley (SOX), European Data Protection Directive (95/46/EC) and Health Insurance Portability and Accountability Act (HIPAA) require Strong Internal

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Database Vault

Marco Alamanni

why database vault
Why Database Vault?
  • Complianceto regulations such as Sarbanes-Oxley

(SOX),European Data Protection Directive

(95/46/EC)and Health Insurance Portability and

Accountability Act (HIPAA) require Strong Internal

Controls and Separation of Duty

  • Internal threatsare a much bigger concern todayrequire enforcement of operational security policies - Who, When, Where can data be accessed?
  • Database consolidation strategy requires preventive measures against access to application data by Powerful (DBA) users
common security problems
Common Security Problems
  • I have requirements around SOX and PCI, how can I prevent my DBA from looking at the application data, including Credit Cards and Personal Information?
  • No protection from users with DBA privileges

DBA role with full access to user and business data

  • Only few apps built with least-privilege model:

various utilities require powerful administrator privileges

  • Cannot meet new compliance requirements:

separation of duty not enforced

  • Cannot control user creation, role assignment, etc.
oracle database vault goals
Oracle Database Vault Goals
  • Integrated security framework to provide full control:

Network, users, DBA, data, roles, SQL Multi-factor Authorization and Policies across various checks

  • Compliance requirements:

Built-in Separation of Duty

Prevent misuse of powerful privileges

Support Database consolidation

database vault versus vpd and ols
Database Vault VersusVPD and OLS
  • Virtual Private Database (VPD):

Restricts access to certain rows for a user by modifying the WHERE clause

  • Oracle Label Security (OLS):

Mediates access to a given row, based on the label on the row and the security level of the user

  • VPD and OLS restrict access at the row level, whereas Database Vault restricts access at the object and command levels.
  • DBV is integrable with both VPD and OLS
dbv administration model
DBV Administration Model
  • DV Administrative roles:

DV_SECANALYST: Reporting only

DV_ACCTMGR: Maintain db accounts/profiles (but no roles)

DV_OWNER: Big boss but cannot grant any direct access rights

  • DV Realm Roles:

DV_REALM_OWNER: Manages realm and associated roles

  • Security:

Provide separation of duties with different admin roles sys, system, sysdba and sysoper cannot grant DV_OWNER, DV_ADMIN roles

key components
Key Components
  • Realms
  • Command Rules
  • Rule sets
  • Factors
  • Secure application roles
realms
Realms
  • Collections of schemas, objects and roles to be secured
  • Controls SELECT, DML, DDL, EXECUTE on protected objects
  • Prevents super user (ANY) access to security sensitive data
  • Does not impact direct object privileges
  • Realm owner determines:

Who can access the realm using system privileges

Grants/revokes applicable roles

  • Authorization enforced at every data object access during SQL execution
default realms
Default Realms
  • Database Vault Account Management:Protects user accounts/profiles and account management role
  • Data Dictionary:Protects all DBMS meta-data
  • Enterprise Manager:Protects all objects required by Enterprise Manager
  • Database Vault:

Protects all Database Vault meta-data

All object owned by Database Vault schemas

All objects owned by LBACSYS

All Security Administration Roles

benefits of data protection with realms
Benefits of Data Protection with Realms
  • Ability to restrict access to privileged users based upon a collection of objects
  • Separation of Duty regarding user administration, and role management
  • Ability to define additional realm authorization rules based upon requirements
  • Limit damage even if privileges escalate to DBA
  • Minimize risks associated with an army of DBAs for 7 * 24 operation whether in-house, outsourced
  • No changes required to applications
command rules mechanics
Command Rules Mechanics
  • Works very similar to DDL event triggers
  • Built into the SQL engine for optimization and security
  • Cover all basic DDL and DML commands
command rule flexibility
Command Rule Flexibility

Alter Database Alter Database Alter Table

Alter Function Audit Alter Tablespace

Alter Package Body Alter Procedure Alter Profile

Alter Session Alter System Alter Synonym

Alter Table Alter Trigger Alter User

Password Alter Tablespace Alter View

Change Password Connect Comment

Create Function Create Index Create Package

Create Database Link Create Procedure Create Role

Create Package Body Create User Create View

Create Table Grant Insert

Noaudit Rename Lock Table

Create Tablespace Create Trigger Truncate Table

Update Insert Delete

Execute Select

factors
Factors
  • A factor:

Is an attribute of a database session

Can have a value, which can be labeled as an identity

  • Can easily be referenced in other Database Vault components to discern access
  • Can be combined with other factors to provide for multifactored authentication
factor s identity
Factor’s Identity
  • An identity:

Is a value

Is associated to a factor

Has a trust level

Can have a label

  • Can be resolved from other factors
  • Can be retrieved with PL/SQL functionsassociated with the factor
built in factors
User Factors: Name Authentication type Session User

Network Factors: Machine name Client IP Network Protocols

Database Factors: Database IP Database Instance DatabaseHostname

Runtime Factors: Language Date Time

Built-In Factors
examples of security policies
Examples of Security Policies
  • IP address based policy:

Allow access from intranet IP addresses

Allow access only from application servers

  • DBA policies:

Allow updates to the database structure only on the weekend

Allow DBA access only with PKI/Kerberos authentication

Allow DDL but only with strong authentication

Permit DDL (CREATE INDEX) but not SELECT

Implement a different set of policies for different types of DBAs

  • Time/date based policies
  • Disallow access from ad-hoc tools (SQL*plus)
oracle database vault rules multi factor authorization
Oracle Database Vault Rules & Multi-factor Authorization
  • Database DBA attempts remote “alter system”

alter system…….

DBA

  • Rule based on IP Address blocks action

create …

  • HR DBA performs unauthorized actions during production

HR

HR

HR Realm

3pm Monday

  • Rule based on Date and Time blocks action

HR DBA

Factors and Command Rules provide

flexible and adaptable security controls

integration with ols and vpd
Integration with OLS and VPD
  • Oracle Label Security: Association of factors identities with OLS labels to enforce row-level security policies
  • Virtual Private Database:Factors can be used in PL/SQL functions that implement VPD policies
pl sql api to database vault
PL/SQL API to Database Vault
  • PL/SQL interface for scriptable administration and tools
  • API includes:

Create, modify, and delete Database Vault components

Allow a session to define their security environment

Query the state and values of components

Administer and configure system-wide Database Vault parameters

oracle database vault summary
Oracle Database Vault Summary
  • Integrated security framework to provide full control:

Control access based upon Network, users, DBA, data, roles, SQL access

Multi-factor Authorization and Policies across variouschecks

Baked-in Security controls

  • Compliance requirements:

Built-in Separation of Duty (Users mgmt, data mgmt, apps mgmt)

Prevent misuse of powerful privileges

  • Operational requirements:

No application changes required

Minimal Performance impact

Easy-to-use PLUS customization flexibility

Support Database consolidation

credits and references
Credits and references
  • Oracle Database Vault – Under the covers, Vipin Samar, Oracle
  • Dividing the Keys to the Kingdom - Separation of Duties with Oracle 10g Database Vault,Eric Siglin, Oracle
  • Patricia Huey, Oracle Database Vault Administrator’s Guide 11g Release 2 (11.2),

Oracle, 2010

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