Oracle Database must be configured to prohibit or restrict the use of organization-defined functions, ports, protocols, and/or services, as defined in the Ports, Protocols, and Services Management Category Assurance List (PPSM CAL) and vulnerability assessments.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-270558	SRG-APP-000142-DB-000094	O19C-00-013500	SV-270558r1065283_rule	2025-02-14	1

Description
To prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must disable or restrict unused or unnecessary physical and logical ports/protocols/services on information systems. Applications 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 organizational operations. Additionally, it is sometimes convenient to provide multiple services from a single component (e.g., email and web services); however, doing so increases risk over limiting the services provided by any one component. To support the requirements and principles of least functionality, the application must support the organizational requirements providing only essential capabilities and limiting the use of ports, protocols, and/or services to only those required, authorized, and approved to conduct official business or to address authorized quality of life issues. Database Management Systems using ports, protocols, and services deemed unsafe are open to attack through those ports, protocols, and services. This can allow unauthorized access to the database and through the database to other components of the information system. Satisfies: SRG-APP-000142-DB-000094, SRG-APP-000383-DB-000364

Description

To prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must disable or restrict unused or unnecessary physical and logical ports/protocols/services on information systems. Applications 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 organizational operations. Additionally, it is sometimes convenient to provide multiple services from a single component (e.g., email and web services); however, doing so increases risk over limiting the services provided by any one component. To support the requirements and principles of least functionality, the application must support the organizational requirements providing only essential capabilities and limiting the use of ports, protocols, and/or services to only those required, authorized, and approved to conduct official business or to address authorized quality of life issues. Database Management Systems using ports, protocols, and services deemed unsafe are open to attack through those ports, protocols, and services. This can allow unauthorized access to the database and through the database to other components of the information system. Satisfies: SRG-APP-000142-DB-000094, SRG-APP-000383-DB-000364

ℹ️ Check
Review the database management system (DBMS) settings for unapproved functions, ports, protocols, and services. If any are found, this is a finding. For definitive information on PPSM, refer to https://cyber.mil/ppsm/. - - - - - In the Oracle database, the communications with the database and incoming requests are performed by the Oracle Listener. The Oracle Listener listens on a specific port or ports for connections to a specific database. The Oracle Listener has configuration files located in the $ORACLE_HOME/network/admin directory. To check the ports and protocols in use, go to that directory and review the SQLNET.ora, LISTENER.ora, and the TNSNAMES.ora. If protocols or ports are in use that are not authorized, this is a finding.

ℹ️ Check

Review the database management system (DBMS) settings for unapproved functions, ports, protocols, and services. If any are found, this is a finding. For definitive information on PPSM, refer to https://cyber.mil/ppsm/. - - - - - In the Oracle database, the communications with the database and incoming requests are performed by the Oracle Listener. The Oracle Listener listens on a specific port or ports for connections to a specific database. The Oracle Listener has configuration files located in the $ORACLE_HOME/network/admin directory. To check the ports and protocols in use, go to that directory and review the SQLNET.ora, LISTENER.ora, and the TNSNAMES.ora. If protocols or ports are in use that are not authorized, this is a finding.

✔️ Fix
Disable functions, ports, protocols, and services that are not approved. - - - - - Change the SQLNET.ora, LISTENER.ora, and TNSNAMES.ora files to reflect the proper use of ports, protocols, and services that are approved at the site. If changes to the Listener are made, the files associated with the Listener must be reloaded by issuing the following commands at the Unix/Linux or Windows prompt. Issue the command to verify what the current status is: $ lsnrctl stat Load the new file that was corrected to reflect site-specific requirements: $ lsnrctl reload Check the status again to verify that the changes have taken place: $ lsnrctl stat

✔️ Fix

Disable functions, ports, protocols, and services that are not approved. - - - - - Change the SQLNET.ora, LISTENER.ora, and TNSNAMES.ora files to reflect the proper use of ports, protocols, and services that are approved at the site. If changes to the Listener are made, the files associated with the Listener must be reloaded by issuing the following commands at the Unix/Linux or Windows prompt. Issue the command to verify what the current status is: $ lsnrctl stat Load the new file that was corrected to reflect site-specific requirements: $ lsnrctl reload Check the status again to verify that the changes have taken place: $ lsnrctl stat