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The Photon operating system must configure sshd to disallow Generic Security Service Application Program Interface (GSSAPI) authentication.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-256547 | PHTN-30-000078 | SV-256547r887315_rule | 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 7.0 vCenter Appliance Photon OS Security Technical Implementation Guide | 2023-02-21 |
Details
| Check Text ( C-60222r887313_chk ) |
|---|
| At the command line, run the following command: # sshd -T|&grep -i GSSAPIAuthentication Expected result: GSSAPIAuthentication no If the output does not match the expected result, this is a finding. |
| Fix Text (F-60165r887314_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 |