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V-22487

CAT II (Medium)

The SSH daemon must not allow rhosts RSA authentication.

Rule ID

SV-46105r2_rule

STIG

SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Version

V1R12

CCIs

CCI-000366

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 add or edit the "RhostsRSAAuthentication" setting value to "no".

Restart the SSH daemon.
# /sbin/service sshd restart