The AIX SSH daemon must not allow RhostsRSAAuthentication.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-215305 | AIX7-00-002123 | SV-215305r991591_rule | 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 |
| IBM AIX 7.x Security Technical Implementation Guide | 2024-08-16 |
Details
| Check Text (C-16503r294366_chk) |
| Check the SSH daemon configuration for the "RhostsRSAAuthentication" setting by running: # grep -i RhostsRSAAuthentication /etc/ssh/sshd_config | grep -v '^#' The above command should yield the following output: RhostsRSAAuthentication no If the setting is present and set to "yes", this is a finding. |
| Fix Text (F-16501r294367_fix) |
| Edit the "/etc/ssh/sshd_config file", add the following line, and save the change: RhostsRSAAuthentication no Restart the SSH daemon: # stopsrc -s sshd # startsrc -s sshd |