There must be no .shosts files on the Ubuntu operating system.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-75499	UBTU-16-010350	SV-90179r1_rule		High

Description
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.

STIG	Date
Canonical Ubuntu 16.04 Security Technical Implementation Guide	2020-05-29

Details

Check Text ( C-75203r1_chk )
Verify there are no ".shosts" files on the Ubuntu operating system. Check the system for the existence of these files with the following command: # sudo find / -name '*.shosts' If any ".shosts" files are found, this is a finding.

Fix Text (F-82127r1_fix)
Remove any found ".shosts" files from the Ubuntu operating system. # rm /[path]/[to]/[file]/.shosts