UCF STIG Viewer Logo

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


Overview

Finding ID Version Rule ID IA Controls Severity
V-916 GEN002120 SV-38741r1_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
AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE 2018-09-18

Details

Check Text ( C-37242r1_chk )
Check /etc/security/login.cfg for a shells stanza.
Procedure:
# grep -p usw: /etc/security/login.cfg | grep "shells ="
If no such stanza exists, this is a finding.

Check the /etc/shells file.
Procedure:
# more /etc/shells
If the /etc/shells file does not exist, this is a finding.
Fix Text (F-32456r1_fix)
Edit the /etc/security/login.cfg file and add a shells stanza containing a list of valid shells.
#chsec -f /etc/security/login.cfg -s usw -a shells=

Create the /etc/shells file.
#vi /etc/shells