The operating system must ensure unauthorized, security-relevant configuration changes detected are tracked.

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The operating system must ensure unauthorized, security-relevant configuration changes detected are tracked.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-38673	RHEL-06-000307	SV-50474r2_rule		Medium

Description
By default, AIDE does not install itself for periodic execution. Periodically running AIDE may reveal unexpected changes in installed files.

STIG	Date
Red Hat Enterprise Linux 6 Security Technical Implementation Guide	2016-06-05

Details

Check Text ( C-46232r2_chk )
To determine that periodic AIDE execution has been scheduled, run the following command: # grep aide /etc/crontab /etc/cron./ If there is no output, this is a finding.

Fix Text (F-43621r1_fix)
AIDE should be executed on a periodic basis to check for changes. To implement a daily execution of AIDE at 4:05am using cron, add the following line to /etc/crontab: 05 4 * * * root /usr/sbin/aide --check AIDE can be executed periodically through other means; this is merely one example.