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


Finding ID Version Rule ID IA Controls Severity
V-239157 PHTN-67-000086 SV-239157r675279_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 6.7 Photon OS Security Technical Implementation Guide 2022-06-17


Check Text ( C-42368r675277_chk )
At the command line, execute 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-42327r675278_fix)
Open /etc/ssh/sshd_config with a text editor.

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

StrictModes yes

At the command line, execute the following command:

# service sshd reload