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Check: GEN003050

SUSE Linux Enterprise Server v11 for System z STIG: GEN003050 (in versions v1 r12 through v1 r9)

Title

Crontab files must be group-owned by root, cron, or the crontab creators primary group. (Cat II impact)

Discussion

To protect the integrity of scheduled system jobs and prevent malicious modification to these jobs, crontab files must be secured.

Check Content

Check the group ownership of the crontab files. Procedure: # ls -lL /var/spool/cron /var/spool/cron/tabs # ls -lL /etc/crontab /etc/cron.{d,daily,hourly,monthly,weekly} or # ls -lL /etc/cron*|grep -v deny If the group owner is not root or the crontab owner's primary group, this is a finding.

Fix Text

Change the group owner of the crontab file to root, cron, or the crontab's primary group. Procedure: # chgrp root [crontab file]

Additional Identifiers

Rule ID: SV-45596r1_rule

Vulnerability ID: V-22385

Group Title: GEN003050

Expert Comments

Expert comments are only available to logged-in users.

CCIs

CCIs tied to check.

Number	Definition
CCI-000225	The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AC-6	Least Privilege