The Red Hat Enterprise Linux operating system must not contain .shosts files.

From Red Hat Enterprise Linux 7 Security Technical Implementation Guide

Associated with: CCI-000366

SV-86901r2_rule The Red Hat Enterprise Linux operating system must not contain .shosts files.

Vulnerability discussion

The .shosts files are used to configure host-based authentication for individual users or the system via SSH. Host-based authentication is not sufficient for preventing unauthorized access to the system, as it does not require interactive identification and authentication of a connection request, or for the use of two-factor authentication.

Check content

Verify there are no ".shosts" files on the system. Check the system for the existence of these files with the following command: # find / -name '*.shosts' If any ".shosts" files are found on the system, this is a finding.

Fix text

Remove any found ".shosts" files from the system. # rm /[path]/[to]/[file]/.shosts

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