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The Photon operating system must configure sshd to perform strict mode checking of home directory configuration files.


Overview

Finding ID Version Rule ID IA Controls Severity
V-256550 PHTN-30-000081 SV-256550r887324_rule Medium
Description
If other users have access to modify user-specific Secure Shell (SSH) configuration files, they may be able to log on to the system as another user.
STIG Date
VMware vSphere 7.0 vCenter Appliance Photon OS Security Technical Implementation Guide 2023-12-01

Details

Check Text ( C-60225r887322_chk )
At the command line, run the following command:

# sshd -T|&grep -i StrictModes

Expected result:

StrictModes yes

If the output does not match the expected result, this is a finding.
Fix Text (F-60168r887323_fix)
Navigate to and open:

/etc/ssh/sshd_config

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