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 not present or not set to no, this is a finding.

Fix Text

Edit the SSH daemon configuration and add or edit the RhostsRSAAuthentication setting value to no.

Additional Identifiers

Rule ID: SV-26786r1_rule

Vulnerability ID: V-22487

Group Title: GEN005538

Expert Comments

CCIs tied to check.

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