The SSH daemon must perform strict mode checking of home directory configuration files.

From VMware vSphere ESXi 6.0 Security Technical Implementation Guide

Part of SRG-OS-000480-VMM-002000

Associated with: CCI-000366

SV-77699r1_rule The SSH daemon must perform strict mode checking of home directory configuration files.

Vulnerability discussion

If other users have access to modify user-specific SSH configuration files, they may be able to log into the system as another user.

Check content

To verify the StrictModes setting, run the following command: # grep -i "^StrictModes" /etc/ssh/sshd_config If there is no output or the output is not exactly "StrictModes yes", this is a finding.

Fix text

To set the StrictModes setting, add or correct the following line in "/etc/ssh/sshd_config": StrictModes yes

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