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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-239154 | PHTN-67-000083 | SV-239154r675270_rule | Medium |
| Description |
|---|
| GSSAPI authentication is used to provide additional authentication mechanisms to applications. Allowing GSSAPI authentication through SSH exposes the system’s GSSAPI to remote hosts, increasing the attack surface of the system. |
| STIG | Date |
|---|---|
| VMware vSphere 6.7 Photon OS Security Technical Implementation Guide | 2021-04-15 |
Details
| Check Text ( C-42365r675268_chk ) |
|---|
| At the command line, execute 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-42324r675269_fix) |
|---|
| Open /etc/ssh/sshd_config with a text editor. Ensure that the "GSSAPIAuthentication" line is uncommented and set to the following: GSSAPIAuthentication no At the command line, execute the following command: # service sshd reload |