Finding ID | Version | Rule ID | IA Controls | Severity |
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V-239276 | ESXI-67-000021 | SV-239276r674757_rule | Medium |
Description |
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If compression is allowed in an SSH connection prior to authentication, vulnerabilities in the compression software could result in compromise of the system from an unauthenticated connection, potentially with root privileges. |
STIG | Date |
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VMware vSphere 6.7 ESXi Security Technical Implementation Guide | 2022-01-05 |
Check Text ( C-42509r674755_chk ) |
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From an SSH session connected to the ESXi host, or from the ESXi shell, run the following command: # grep -i "^Compression" /etc/ssh/sshd_config If there is no output or the output is not exactly "Compression no", this is a finding. |
Fix Text (F-42468r674756_fix) |
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From an SSH session connected to the ESXi host, or from the ESXi shell, add or correct the following line in "/etc/ssh/sshd_config": Compression no |