The Oracle Linux operating system must not allow a non-certificate trusted host SSH logon to the system.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-221697 | SRG-OS-000480-GPOS-00229 | OL07-00-010470 | SV-221697r991591_rule | 2025-05-08 | 3 |
Description
Failure to restrict system access to authenticated users negatively impacts operating system security.
ℹ️ Check
Verify the operating system does not allow a non-certificate trusted host SSH logon to the system.
Check for the value of the "HostbasedAuthentication" keyword with the following command:
# grep -i hostbasedauthentication /etc/ssh/sshd_config
HostbasedAuthentication no
If the "HostbasedAuthentication" keyword is not set to "no", is missing, or is commented out, this is a finding.
✔️ Fix
Configure the operating system not to allow a non-certificate trusted host SSH logon to the system.
Edit the "/etc/ssh/sshd_config" file to uncomment or add the line for "HostbasedAuthentication" keyword and set the value to "no":
HostbasedAuthentication no
The SSH service must be restarted for changes to take effect.