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RHEL-09-652060 RHEL 9 must use cron logging.

DISA STIG library V2R10
All changes in this version
first version loaded CAT II

Maps to CM-6 via CCI-000366

Title

RHEL 9 must use cron logging.

Control

Verify 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. $ grep -s "cron.\*" /etc/rsyslog.conf /etc/rsyslog.d/*.conf /etc/rsyslog.d/99-cron-stig.conf:cron.* action(type="omfile" file="/var/log/cron") If the command does not return a line demonstrating logging to "/var/log/cron", perform a functional cron test. Inject a message into the cron logging facility with the following command: $ logger -p cron.info "STIG-TEST-CRON-LOGGING" Check if it successfully wrote to the dedicated log file with the following command: $ sudo grep "STIG-TEST-CRON-LOGGING" /var/log/cron Jul 16 11:33:00 RHEL10Sim pdosadmin[33692]: STIG-TEST-CRON-LOGGING If "rsyslog" is not logging messages for the cron facility or all facilities, this is a finding.

Discussion

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.

Related controls

CCI-000366

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 Restart the rsyslog daemon for the changes to take effect: $ sudo systemctl restart rsyslog.service