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  4. PPS9-00-008700 – The EDB Postgres Advanced Server must disable network functions, ports, protocols, and services deemed by the organization to be nonsecure, in accord with the Ports, Protocols, and Services Management (PPSM) guidance – Port
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PPS9-00-008700 – The EDB Postgres Advanced Server must disable network functions, ports, protocols, and services deemed by the organization to be nonsecure, in accord with the Ports, Protocols, and Services Management (PPSM) guidance – Port

Details

Use of nonsecure network functions, ports, protocols, and services exposes the system to avoidable threats.

A database cluster listens on a single port (usually 5444 for Postgres Plus Advanced Server). The Postgres Enterprise Manager (PEM) agents do not listen on ports, they only act as clients to the PEM server. The PEM server has two components (a repository which is a Postgres database) and a PHP application. The PHP application listens on a port configured in Apache, generally 8080 or 8443.

The ports to check are: 1) The primary Postgres cluster port, 2) The PEM PHP port, and 3) The PEM Repository DB port. Generally 2 and 3 should be installed on an isolated management machine without access from anyone other than administrators.

Solution

Disable each prohibited network function, port, protocol, or service prohibited by the PPSM guidance.

Open ‘/pg_hba.conf’ in an editor. (The default path for the postgresql data directory is /var/lib/ppas/9.5/data, but this will vary according to local circumstances.) Change the TYPE of any rows not starting with a ‘#’ to be either ‘local’ or ‘hostssl’. The METHOD for the local rows should be ‘peer’, which will authenticate based on the operating system name. The METHOD for the hostssl rows should be one of these (in preferred order): cert, ldap, sspi, pam, md5

Execute the following SQL as enterprisedb:

ALTER SYSTEM SET port = ;

Execute the following operating system command as root:

systemctl restart ppas-9.5.service

Supportive Information

The following resource is also helpful.

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.

References

Source

Updated on July 16, 2022
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