Finding ID | Version | Rule ID | IA Controls | Severity |
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V-239156 | PHTN-67-000085 | SV-239156r675276_rule | Medium |
Description |
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X11 is an older, insecure graphics forwarding protocol. It is not used by Photon and should be disabled as a general best practice to limit attack surface area and communication channels. |
STIG | Date |
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VMware vSphere 6.7 Photon OS Security Technical Implementation Guide | 2022-09-27 |
Check Text ( C-42367r675274_chk ) |
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At the command line, execute the following command: # sshd -T|&grep -i X11Forwarding Expected result: X11Forwarding no If the output does not match the expected result, this is a finding. |
Fix Text (F-42326r675275_fix) |
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Open /etc/ssh/sshd_config with a text editor. Ensure that the "X11Forwarding" line is uncommented and set to the following: X11Forwarding no At the command line, execute the following command: # service sshd reload |