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The Photon operating system must configure Secure Shell (SSH) to perform strict mode checking of home directory configuration files.


Finding ID Version Rule ID IA Controls Severity
V-258876 PHTN-40-000213 SV-258876r933689_rule Medium
If other users have access to modify user-specific SSH configuration files, they may be able to log on to the system as another user.
VMware vSphere 8.0 vCenter Appliance Photon OS 4.0 Security Technical Implementation Guide 2023-10-29


Check Text ( C-62616r933687_chk )
At the command line, run the following command to verify the running configuration of sshd:

# sshd -T|&grep -i StrictModes

Example result:

strictmodes yes

If "StrictModes" is not set to "yes", this is a finding.
Fix Text (F-62525r933688_fix)
Navigate to and open:


Ensure the "StrictModes" line is uncommented and set to the following:

StrictModes yes

At the command line, run the following command:

# systemctl restart sshd.service