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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-916	GEN002120	SV-916r2_rule	ECSC-1	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 shell that may not be secure.

STIG	Date
UNIX SRG	2013-03-26

Details

Check Text ( C-432r2_chk )
Verify /etc/shells exists. # ls -l /etc/shells If the file does not exist, this is a finding.

Fix Text (F-1070r2_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.)