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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-75501	UBTU-16-010360	SV-90181r2_rule		High

Description
The shosts.equiv files are used to configure host-based authentication for 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-75205r2_chk )
Verify there are no "shosts.equiv" files on the Ubuntu operating system. Check for the existence of these files with the following command: # find / -name shosts.equiv If a "shosts.equiv" file is found, this is a finding.

Fix Text (F-82129r1_fix)
Remove any found "shosts.equiv" files from the Ubuntu operating system. # rm /etc/ssh/shosts.equiv