The AIX SSH daemon must be configured to not use host-based authentication.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-215304 | AIX7-00-002122 | SV-215304r991591_rule | Medium |
| Description |
| SSH trust relationships mean a compromise on one host can allow an attacker to move trivially to other hosts. |
| STIG | Date |
| IBM AIX 7.x Security Technical Implementation Guide | 2024-08-16 |
Details
| Check Text (C-16502r294363_chk) |
| Check the SSH daemon configuration for allowed host-based authentication using command: # grep -i HostbasedAuthentication /etc/ssh/sshd_config | grep -v '^#' HostbasedAuthentication no If no lines are returned, or the returned "HostbasedAuthentication" directive contains "yes", this is a finding. |
| Fix Text (F-16500r294364_fix) |
| Edit "/etc/ssh/sshd_config" and add or update the "HostbasedAuthentication" line as: HostbasedAuthentication no Save the change and restart ssh daemon: # stopsrc -s sshd # startsrc -s sshd |