Title

All files and directories contained in interactive user's home directories must be owned by the home directory's owner. (Cat III impact)

Discussion

If users do not own the files in their directories, unauthorized users may be able to access them. Additionally, if files are not owned by the user, this could be an indication of system compromise.

Check Content

For each user in the /etc/passwd file, check for the presence of files and directories within the user's home directory not owned by the home directory owner. Procedure: # find /<usershomedirectory> ! -fstype nfs ! -user <username> ! \( -name .login -o -name .cshrc -o -name .logout -o -name .profile -o -name .bash_profile -o -name .bashrc -o -name .env -o -name .dtprofile -o -name .dispatch -o -name .emacs -o -name .exrc \) -exec ls -ld {} \; If user's home directories contain files or directories not owned by the home directory owner, this is a finding.

Fix Text

Change the ownership of files and directories in user's home directories to the owner of the home directory. Procedure: # chown accountowner filename OR # find /<usershomedirectory> ! -fstype nfs ! -user <username> ! /( -name .login -o -name .cshrc -o -name .logout -o -name .profile -o -name .bash_profile -o -name .bashrc -o -name .env -o -name .dtprofile -o -name .dispatch -o -name .emacs -o -name .exrc \) -exec chown <username> {} \;

Additional Identifiers

Rule ID: SV-914r2_rule

Vulnerability ID: V-914

Group Title: GEN001540

Expert Comments

CCIs tied to check.

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