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The ESXi host Secure Shell (SSH) daemon must perform strict mode checking of home directory configuration files.


Finding ID Version Rule ID IA Controls Severity
V-256389 ESXI-70-000020 SV-256389r885948_rule Medium
If other users have access to modify user-specific SSH configuration files, they may be able to log on the system as another user.
VMware vSphere 7.0 ESXi Security Technical Implementation Guide 2023-06-21


Check Text ( C-60064r885946_chk )
From an ESXi shell, run the following command:

# /usr/lib/vmware/openssh/bin/sshd -T|grep strictmodes

Expected result:

strictmodes yes

If the output does not match the expected result, this is a finding.
Fix Text (F-60007r885947_fix)
From an ESXi shell, add or correct the following line in "/etc/ssh/sshd_config":

StrictModes yes