A file integrity tool must be used at least weekly to check for unauthorized file changes, particularly the addition of unauthorized system libraries or binaries, or for unauthorized modification to authorized system libraries or binaries.

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A file integrity tool must be used at least weekly to check for unauthorized file changes, particularly the addition of unauthorized system libraries or binaries, or for unauthorized modification to authorized system libraries or binaries.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-51011	OL6-00-000302	SV-65217r2_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
Oracle Linux 6 Security Technical Implementation Guide	2019-10-01

Details

Check Text ( C-53453r3_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, or if aide is not run at least weekly, this is a finding.

Fix Text (F-55815r1_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.