MD4X-00-004900 - MongoDB must allocate audit record storage capacity in accordance with site audit record storage requirements.

Information

In order to ensure sufficient storage capacity for the audit logs, MongoDB must be able to allocate audit record storage capacity. Although another requirement (SRG-APP-000515-DB-000318) mandates that audit data be off-loaded to a centralized log management system, it remains necessary to provide space on the database server to serve as a buffer against outages and capacity limits of the off-loading mechanism.

The task of allocating audit record storage capacity is usually performed during initial installation of MongoDB and is closely associated with the DBA and system administrator roles. The DBA or system administrator will usually coordinate the allocation of physical drive space with the application owner/installer and the application will prompt the installer to provide the capacity information, the physical location of the disk, or both.

In determining the capacity requirements, consider such factors as: total number of users; expected number of concurrent users during busy periods; number and type of events being monitored; types and amounts of data being captured; the frequency/speed with which audit records are off-loaded to the central log management system; and any limitations that exist on MongoDB's ability to reuse the space formerly occupied by off-loaded records.

Solution

If an auditLog has not been specified, or a centralized system log (which is recommended) has not been enabled, configure these in the mongod.conf configuration file:

auditLog:
destination: syslog

See documentation for additional configuration: https://docs.mongodb.com/v4.4/tutorial/configure-auditing/

Allocate sufficient space to the storage volume hosting the file identified in the MongoDB configuration 'auditLog.path' to support audit file peak demand.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MDB_Enterprise_Advanced_4-x_V1R3_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-4, CAT|II, CCI|CCI-001849, Rule-ID|SV-252172r879730_rule, STIG-ID|MD4X-00-004900, Vuln-ID|V-252172

Plugin: Unix

Control ID: 27d9026ebdb5d3e9aa8f7734bd107d730a82e2904300d0059aa51b0708bcf3a3