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-256388r959010_rule | CCI-000366 | 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 | 2025-02-11 | |||
Details
Check Text (C-256388r959010_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