The ESXi host Secure Shell (SSH) daemon must be configured to only use FIPS 140-2 validated ciphers.
An XCCDF Rule
Description
<VulnDiscussion>Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. ESXi must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-258750r933311_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
From an ESXi shell, run the following command:
# esxcli system ssh server config set -k ciphers -v aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
or