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All shell files must not have extended ACLs.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22366 GEN002230 M6 SV-38098r1_rule ECLP-1 Medium
Description
Shells with world/group-write permissions give the ability to maliciously modify the shell to obtain unauthorized access.
STIG Date
MAC OSX 10.6 Workstation Security Technical Implementation Guide Draft 2013-01-10

Details

Check Text ( C-37636r1_chk )
Open a terminal session and enter the following command to view extended ACLs.

cat /etc/shells | xargs -n1 ls -lL

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 (F-32877r1_fix)
Open a terminal session and use the following command to remove the extended ACLs.

chmod -N