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The SSH daemon must not allow rhosts RSA authentication.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22487 GEN005538 SV-40722r1_rule ECSC-1 Medium
Description
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.
STIG Date
AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE 2015-06-16

Details

Check Text ( C-39453r1_chk )
Check the SSH daemon configuration for the RhostsRSAAuthentication setting.

# grep -i RhostsRSAAuthentication /etc/ssh/sshd_config | grep -v '^#'

If the setting is present and set to "yes", this is a finding. If the setting is absent or set to "no", this is not a finding.
Fix Text (F-34581r1_fix)
Edit the /etc/ssh/sshd_config file and remove the RhostsRSAAuthentication setting or change the value of the RhostsRSAAuthentication setting to "no".