Cron logging must be implemented in RHEL 8.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-230387	RHEL-08-030010	SV-230387r743996_rule		Medium

Description
Cron logging can be used to trace the successful or unsuccessful execution of cron jobs. It can also be used to spot intrusions into the use of the cron facility by unauthorized and malicious users.

STIG	Date
Red Hat Enterprise Linux 8 Security Technical Implementation Guide	2023-03-08

Details

Check Text ( C-33056r743994_chk )
Verify that "rsyslog" is configured to log cron events with the following command: Note: If another logging package is used, substitute the utility configuration file for "/etc/rsyslog.conf" or "/etc/rsyslog.d/.conf" files. $ sudo grep -s cron /etc/rsyslog.conf /etc/rsyslog.d/.conf /etc/rsyslog.conf:.info;mail.none;authpriv.none;cron.none /var/log/messages /etc/rsyslog.conf:# Log cron stuff /etc/rsyslog.conf:cron. /var/log/cron If the command does not return a response, check for cron logging all facilities with the following command. $ sudo grep -s /var/log/messages /etc/rsyslog.conf /etc/rsyslog.d/.conf /etc/rsyslog.conf:.info;mail.none;authpriv.none;cron.none /var/log/messages If "rsyslog" is not logging messages for the cron facility or all facilities, this is a finding.

Check Text ( C-33056r743994_chk )

Verify that "rsyslog" is configured to log cron events with the following command:

Note: If another logging package is used, substitute the utility configuration file for "/etc/rsyslog.conf" or "/etc/rsyslog.d/*.conf" files.

$ sudo grep -s cron /etc/rsyslog.conf /etc/rsyslog.d/*.conf

/etc/rsyslog.conf:*.info;mail.none;authpriv.none;cron.none /var/log/messages
/etc/rsyslog.conf:# Log cron stuff
/etc/rsyslog.conf:cron.* /var/log/cron

If the command does not return a response, check for cron logging all facilities with the following command.

$ sudo grep -s /var/log/messages /etc/rsyslog.conf /etc/rsyslog.d/*.conf

/etc/rsyslog.conf:*.info;mail.none;authpriv.none;cron.none /var/log/messages

If "rsyslog" is not logging messages for the cron facility or all facilities, this is a finding.

Fix Text (F-33031r743995_fix)
Configure "rsyslog" to log all cron messages by adding or updating the following line to "/etc/rsyslog.conf" or a configuration file in the /etc/rsyslog.d/ directory: cron.* /var/log/cron The rsyslog daemon must be restarted for the changes to take effect: $ sudo systemctl restart rsyslog.service