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Check: GEN001810

SUSE Linux Enterprise Server v11 for System z STIG: GEN001810 (in versions v1 r12 through v1 r9)

Title

Skeleton files must not have extended ACLs. (Cat II impact)

Discussion

If the skeleton files are not protected, unauthorized personnel could change user startup parameters and possibly jeopardize user files.

Check Content

Check skeleton files for extended ACLs: # ls -alL /etc/skel. 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 [skeleton file with extended ACL] or: # ls -lL /etc/skel|grep "\+ "|awk ‘{print “/etc/skel/”$9}’|xargs setfacl --remove-all will remove all ACLs from the files.

Additional Identifiers

Rule ID: SV-45134r1_rule

Vulnerability ID: V-22357

Group Title: GEN001810

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