Title

PostgreSQL must generate audit records when unsuccessful attempts to modify categories of information (e.g., classification levels/security levels) occur. (Cat II impact)

Discussion

Changes in categories of information must be tracked. Without an audit trail, unauthorized access to protected data could go undetected. To aid in diagnosis, it is necessary to keep track of failed attempts in addition to the successful ones. For detailed information on categorizing information, refer to FIPS Publication 199, Standards for Security Categorization of federal information and information systems, and FIPS Publication 200, Minimum Security Requirements for federal information and information systems.

Check Content

As the database administrator, verify pgaudit is enabled by running the following SQL: $ sudo su - postgres $ psql -c "SHOW shared_preload_libraries" If the output does not contain "pgaudit", this is a finding. Verify that role, read, write, and ddl auditing are enabled: $ psql -c "SHOW pgaudit.log" If the output does not contain role, read, write, and ddl, this is a finding.

Fix Text

Note: The following instructions use the PGDATA and PGVER environment variables. Refer to APPENDIX-F for instructions on configuring PGDATA and APPENDIX-H for PGVER. Configure PostgreSQL to produce audit records when unsuccessful attempts to modify categories of information occur. To ensure logging is enabled, see the instructions in the supplementary content APPENDIX-C. All denials are logged when logging is enabled. With pgaudit installed the following configurations can be made: $ sudo su - postgres $ vi ${PGDATA?}/postgresql.conf Add the following parameters (or edit existing parameters): pgaudit.log='ddl, role, read, write' As the system administrator, reload the server with the new configuration: $ sudo systemctl reload postgresql-${PGVER?}

Additional Identifiers

Rule ID: SV-261949r1000852_rule

Vulnerability ID: V-261949

Group Title: SRG-APP-000498-DB-000347

Expert Comments

CCIs tied to check.

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