Detections
Analytics
OL09-00-002349 - OL 9 SSH daemon must not allow known hosts authentication.
Information
Configuring the IgnoreUserKnownHosts setting for the SSH daemon provides additional assurance that remote login via SSH will require a password, even in the event of misconfiguration elsewhere.Solution
Configure the SSH daemon to not allow known hosts authentication.Add the following line to "/etc/ssh/sshd_config" or to a file in "/etc/ssh/sshd_config.d" or uncomment the line and set the value to "yes":
IgnoreUserKnownHosts yes
The SSH service must be restarted for changes to take effect:
$ sudo systemctl restart sshd.service
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Oracle_Linux_9_V1R5_STIG.zip
Item Details
Audit Name: DISA Oracle Linux 9 STIG v1r5
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-271712r1091848_rule, STIG-ID|OL09-00-002349, Vuln-ID|V-271712
Plugin: Unix
Control ID: 1b7eee54ab55d0858f0ac15dc4820832a75c94bbd591954b4ee9d05b139fc7de