The /etc/shells (or equivalent) file must exist.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-916	GEN002120	SV-45170r1_rule		Medium

Description
The shells file (or equivalent) lists approved default shells. It helps provide layered defense to the security approach by ensuring users cannot change their default shell to an unauthorized unsecure shell.

STIG	Date
SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide	2018-09-19

Details

Check Text ( C-42515r1_chk )
Verify /etc/shells exists. # ls -l /etc/shells If the file does not exist, this is a finding.

Fix Text (F-38568r1_fix)
Create a /etc/shells file containing a list of valid system shells. Consult vendor documentation for an appropriate list of system shells. Procedure: # echo "/bin/bash" >> /etc/shells # echo "/bin/csh" >> /etc/shells (Repeat as necessary for other shells.)