EnterpriseDB Postgres Advanced Server (EPAS) Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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EDB Postgres Advanced Server software modules, to include stored procedures, functions, and triggers must be monitored to discover unauthorized changes.
If the system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robus...Rule Medium Severity -
The EDB Postgres Advanced Server software installation account must be restricted to authorized users.
When dealing with change control issues, it should be noted any changes to the hardware, software, and/or firmware components of the information system and/or application can have significant effec...Rule High Severity -
Database objects must be owned by database/EDB Postgres Advanced Server principals authorized for ownership.
Database objects include but are not limited to tables, indexes, storage, stored procedures, functions, triggers, and links to software external to the EDB Postgres Advanced Server, etc. Within th...Rule Medium Severity -
The role(s)/group(s) used to modify database structure and logic modules must be restricted to authorized users.
Database structures include but are not necessarily limited to tables, indexes, storage, etc. Logic modules are objects such as stored procedures, functions, triggers, and links to software extern...Rule Medium Severity -
Unused database components which are integrated in the EDB Postgres Advanced Server and cannot be uninstalled must be disabled.
Information systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizatio...Rule Medium Severity -
Access to external executables must be disabled or restricted.
Information systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizatio...Rule Medium Severity -
The EDB Postgres Advanced Server must uniquely identify and authenticate organizational users (or processes acting on behalf of organizational users).
To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system. Organizational user...Rule Medium Severity -
If passwords are used for authentication, the EDB Postgres Advanced Server must transmit only encrypted representations of passwords.
The DOD standard for authentication is DOD-approved PKI certificates. Authentication based on User ID and Password may be used only when it is not possible to employ a PKI certificate, and require...Rule High Severity -
The EDB Postgres Advanced Server, when utilizing PKI-based authentication, must validate certificates by performing RFC 5280-compliant certification path validation.
The DOD standard for authentication is DOD-approved PKI certificates. A certificate's certification path is the path from the end entity certificate to a trusted root certification authority (CA)....Rule Medium Severity -
When using command-line tools such as psql, users must use a logon method that does not expose the password.
To prevent the compromise of authentication information, such as passwords and PINs, during the authentication process, the feedback from the information system must not provide any information tha...Rule High Severity -
The EDB Postgres Advanced Server must uniquely identify and authenticate nonorganizational users (or processes acting on behalf of nonorganizational users).
Nonorganizational users include all information system users other than organizational users, which include organizational employees or individuals the organization deems to have equivalent status ...Rule Medium Severity -
The EDB Postgres Advanced Server must invalidate session identifiers upon user logout or other session termination.
Captured sessions can be reused in "replay" attacks. This requirement limits the ability of adversaries to capture and continue to employ previously valid session IDs. This requirement focuses on ...Rule Medium Severity -
The EDB Postgres Advanced Server must isolate security functions from nonsecurity functions.
An isolation boundary provides access control and protects the integrity of the hardware, software, and firmware that perform security functions. Security functions are the hardware, software, and...Rule Medium Severity -
The EDB Postgres Advanced Server must check the validity of all data inputs except those specifically identified by the organization.
Invalid user input occurs when a user inserts data or characters into an application's data entry fields and the application is unprepared to process that data. This results in unanticipated applic...Rule Medium Severity -
The EDB Postgres Advanced Server and associated applications must reserve the use of dynamic code execution for situations that require it.
With respect to database management systems, one class of threat is known as SQL Injection, or more generally, code injection. It takes advantage of the dynamic execution capabilities of various pr...Rule Medium Severity -
The EDB Postgres Advanced Server must provide nonprivileged users with error messages that provide information necessary for corrective actions without revealing information that could be exploited by adversaries.
Any DBMS or associated application providing too much information in error messages on the screen or printout risks compromising the data and security of the system. The structure and content of er...Rule Medium Severity -
The EDB Postgres Advanced Server must automatically terminate a user session after organization-defined conditions or trigger events requiring session disconnect.
This addresses the termination of user-initiated logical sessions in contrast to the termination of network connections that are associated with communications sessions (i.e., network disconnect). ...Rule Medium Severity -
The EDB Postgres Advanced Server must associate organization-defined types of security labels having organization-defined security label values with information in transmission.
Without the association of security labels to information, there is no basis for the DBMS to make security-related access-control decisions. Security labels are abstractions representing the basic...Rule Medium Severity -
Execution of software modules (to include stored procedures, functions, and triggers) with elevated privileges must be restricted to necessary cases only.
In certain situations, to provide required functionality, a DBMS needs to execute internal logic (stored procedures, functions, triggers, etc.) and/or external code modules with elevated privileges...Rule Medium Severity -
Execution of software modules (to include stored procedures, functions, and triggers) with elevated privileges must be restricted to necessary cases only.
In certain situations, to provide required functionality, a DBMS needs to execute internal logic (stored procedures, functions, triggers, etc.) and/or external code modules with elevated privileges...Rule Medium Severity
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