Title

The SSH daemon must perform strict mode checking of home directory configuration files. (Cat II impact)

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

Check the SSH daemon configuration for the StrictModes setting. # grep -i StrictModes /etc/ssh/sshd_config | grep -v '^#' If the setting is present and not set to yes, this is a finding.

Fix Text

Edit the SSH daemon configuration and change the StrictModes setting value to yes or remove it entirely.

Additional Identifiers

Rule ID: SV-227904r603266_rule

Vulnerability ID: V-227904

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.