Local initialization files must be group-owned by the user's primary group or root.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22361	GEN001870	SV-26481r1_rule	ECLP-1	Medium

Description
Local initialization files are used to configure the user's shell environment upon login. Malicious modification of these files could compromise accounts upon logon.

STIG	Date
AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE	2018-09-18

Details

Check Text ( C-27543r1_chk )
Check user home directories for local initialization files group-owned by a group other than the user's primary group or root. 1. List user accounts and their primary GID. # cut -d : -f 1,4 /etc/passwd 2. Check local initialization files for each user. # ls -alL ~USER/.login ~USER/.cshrc ~USER/.logout ~USER/.profile ~USER/.bash_profile ~USER/.bashrc ~USER/.bash_logout ~USER/.env ~USER/.dtprofile ~USER/.dispatch ~USER/.emacs ~USER/.exrc 3. If any file is not group-owned by root or the user's primary GID, this is a finding.

Check Text ( C-27543r1_chk )

Check user home directories for local initialization files group-owned by a group other than the user's primary group or root.

1. List user accounts and their primary GID.
# cut -d : -f 1,4 /etc/passwd

2. Check local initialization files for each user.
# ls -alL ~USER/.login ~USER/.cshrc ~USER/.logout ~USER/.profile ~USER/.bash_profile ~USER/.bashrc ~USER/.bash_logout ~USER/.env ~USER/.dtprofile ~USER/.dispatch ~USER/.emacs ~USER/.exrc

3. If any file is not group-owned by root or the user's primary GID, this is a finding.

Fix Text (F-23709r1_fix)
Change the group owner of the local initialization file to the user's primary group, or root. # chgrp [USER's primary GID] ~USER/[local initialization file]