The Photon operating system must configure Secure Shell (SSH) to disallow Generic Security Service Application Program Interface (GSSAPI) authentication.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-258874 | SRG-OS-000480-GPOS-00227 | PHTN-40-000211 | SV-258874r991589_rule | 2024-07-11 | 2 |
| Description |
|---|
| GSSAPI authentication is used to provide additional authentication mechanisms to applications. Allowing GSSAPI authentication through Secure Shell (SSH) exposes the system's GSSAPI to remote hosts, increasing the attack surface of the system. |
| ℹ️ Check |
|---|
| At the command line, run the following command to verify the running configuration of sshd: # sshd -T|&grep -i GSSAPIAuthentication Example result: gssapiauthentication no If "GSSAPIAuthentication" is not set to "no", this is a finding. |
| ✔️ Fix |
|---|
| Navigate to and open: /etc/ssh/sshd_config Ensure the "GSSAPIAuthentication" line is uncommented and set to the following: GSSAPIAuthentication no At the command line, run the following command: # systemctl restart sshd.service |