The Photon operating system must configure Secure Shell (SSH) to disallow Generic Security Service Application Program Interface (GSSAPI) authentication.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258874 | PHTN-40-000211 | SV-258874r933683_rule | CCI-000366 | medium |
| 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. | ||||
| STIG | Date | |||
| VMware vSphere 8.0 vCenter Appliance Photon OS 4.0 Security Technical Implementation Guide | 2023-10-29 | |||
Details
Check Text (C-258874r933683_chk)
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 Text (F-62523r933682_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