Title

All files and directories contained in user home directories must have mode 0750 or less permissive. (Cat III impact)

Discussion

Excessive permissions allow unauthorized access to user files.

Check Content

For each user in the /etc/passwd file, check for files and directories with a mode more permissive than 0750. Procedure: # find /<usershomedirectory> ! -fstype nfs ! \( -name .bashrc -o -name .bash_login -o -name .bash_logout -o -name .bash_profile -o -name .cshrc -o -name .kshrc -o -name .login -o -name .logout -o -name .profile -o -name .tcshrc -o -name .env -o -name .dtprofile -o -name .dispatch -o -name .emacs -o -name .exrc \) \( -perm -0001 -o -perm -0002 -o -perm -0004 -o -perm -0020 -o -perm -2000 -o -perm -4000 \) -exec ls -ld {} \; If user home directories contain files or directories more permissive than 0750, this is a finding.

Fix Text

Change the mode of files and directories within user home directories to 0750. Procedure: # chmod 0750 filename Document all changes.

Additional Identifiers

Rule ID: SV-45040r1_rule

Vulnerability ID: V-915

Group Title: GEN001560

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.