Title

The AIX SSH daemon must be configured to not use host-based authentication. (Cat II impact)

Discussion

SSH trust relationships mean a compromise on one host can allow an attacker to move trivially to other hosts.

Check Content

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

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

Additional Identifiers

Rule ID: SV-215304r991591_rule

Vulnerability ID: V-215304

Group Title: SRG-OS-000480-GPOS-00229

Expert Comments

CCIs tied to check.

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