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Check: GEN002990

SUSE Linux Enterprise Server v11 for System z STIG: GEN002990 (in versions v1 r12 through v1 r9)

Title

The cron.allow file must not have an extended ACL. (Cat II impact)

Discussion

A readable and/or writeable cron.allow file by other users than root could allow potential intruders and malicious users to use the file contents to help discern information, such as who is allowed to execute cron programs, which could be harmful to overall system and network security.

Check Content

Check the permissions of the cron.allow file. # ls -l /etc/cron.allow If the permissions include a '+', the file has an extended ACL. If the file has an extended ACL and it has not been documented with the IAO, this is a finding.

Fix Text

Remove the extended ACL from the file. # setfacl --remove-all /etc/cron.allow

Additional Identifiers

Rule ID: SV-45574r1_rule

Vulnerability ID: V-22384

Group Title: GEN002990

Expert Comments

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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