All local initialization files must have mode 0740 or less permissive.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-75569	UBTU-16-010770	SV-90249r1_rule		Medium

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

STIG	Date
Canonical Ubuntu 16.04 LTS Security Technical Implementation Guide	2018-07-18

Details

Check Text ( C-75273r1_chk )
Verify that all local initialization files have a mode of "0740" or less permissive. Check the mode on all local initialization files with the following command: Note: The example will be for the smithj user, who has a home directory of "/home/smithj". # ls -al /home/smithj/.* \| more -rwxr-xr-x 1 smithj users 896 Mar 10 2011 .profile -rwxr-xr-x 1 smithj users 497 Jan 6 2007 .login -rwxr-xr-x 1 smithj users 886 Jan 6 2007 .something If any local initialization files have a mode more permissive than "0740", this is a finding.

Check Text ( C-75273r1_chk )

Verify that all local initialization files have a mode of "0740" or less permissive.

Check the mode on all local initialization files with the following command:

Note: The example will be for the smithj user, who has a home directory of "/home/smithj".

# ls -al /home/smithj/.* | more
-rwxr-xr-x 1 smithj users 896 Mar 10 2011 .profile
-rwxr-xr-x 1 smithj users 497 Jan 6 2007 .login
-rwxr-xr-x 1 smithj users 886 Jan 6 2007 .something

If any local initialization files have a mode more permissive than "0740", this is a finding.

Fix Text (F-82197r1_fix)
Set the mode of the local initialization files to "0740" with the following command: Note: The example will be for the smithj user, who has a home directory of "/home/smithj". # chmod 0740 /home/smithj/.