The ESXi host Secure Shell (SSH) daemon must not permit user environment settings.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-256388	ESXI-70-000016	SV-256388r885945_rule		Medium

Description
SSH environment options potentially allow users to bypass access restriction in some configurations. Users must not be able to present environment options to the SSH daemon.

STIG	Date
VMware vSphere 7.0 ESXi Security Technical Implementation Guide	2023-06-21

Details

Check Text ( C-60063r885943_chk )
From an ESXi shell, run the following command: # /usr/lib/vmware/openssh/bin/sshd -T|grep permituserenvironment Expected result: permituserenvironment no If the output does not match the expected result, this is a finding.

Fix Text (F-60006r885944_fix)
From an ESXi shell, add or correct the following line in "/etc/ssh/sshd_config": PermitUserEnvironment no