The SSH private host key files must have mode 0600 or less permissive.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000225

SV-63863r1_rule The SSH private host key files must have mode 0600 or less permissive.

Vulnerability discussion

If an unauthorized user obtains the private SSH host key file, the host could be impersonated.

Check content

Check the permissions for SSH private host key files. # ls -lL /etc/ssh/*key If any file has a mode more permissive than 0600, this is a finding.

Fix text

Change the permissions for the SSH private host key files. # chmod 0600 /etc/ssh/*key

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