Title

The SSH daemon must not allow rhosts RSA authentication. (Cat II impact)

Discussion

If SSH permits rhosts RSA authentication, a user may be able to log in based on the keys of the host originating the request and not any user-specific authentication.

Check Content

Check the SSH daemon configuration for the RhostsRSAAuthentication setting. # grep -i RhostsRSAAuthentication /etc/ssh/sshd_config | grep -v '^#' If the setting is set to yes, this is a finding.

Fix Text

Edit the SSH daemon configuration and change the RhostsRSAAuthentication setting value to no or remove it entirely.

Additional Identifiers

Rule ID: SV-227905r603266_rule

Vulnerability ID: V-227905

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

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