Vulnerability Discussion
Information stored in one location is vulnerable to accidental or incidental deletion or alteration.
Off-loading is a common process in information systems with limited audit storage capacity.
One method of off-loading audit logs in Red Hat Enterprise Linux is with the use of the audisp-remote dameon. Without the configuration of the "au-remote" plugin, the audisp-remote daemon will not off load the logs from the system being audited.
Satisfies: SRG-OS-000342-GPOS-00133, SRG-OS-000479-GPOS-00224
Check
Verify the "au-remote" plugin is configured to always off-load audit logs using the audisp-remote daemon:
# cat /etc/audisp/plugins.d/au-remote.conf | grep -v "^#"
active = yes
direction = out
path = /sbin/audisp-remote
type = always
format = string
If "active" is not set to "yes", "direction" is not set to "out", "path" is not set to "/sbin/audisp-remote", "type" is not set to "always", or any of the lines are commented out, ask the System Administrator to indicate how the audit logs are off-loaded to a different system or storage media.
If there is no evidence that the system is configured to off-load audit logs to a different system or storage media, this is a finding.
Fix
Edit the /etc/audisp/plugins.d/au-remote.conf file and add or update the following values:
active = yes
direction = out
path = /sbin/audisp-remote
type = always
The audit daemon must be restarted for changes to take effect:
# service auditd restart