STIGQter: STIG Summary: VMware vSphere 6.7 ESXi Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 09 Mar 2021:

The ESXi host SSH daemon must use DoD-approved encryption to protect the confidentiality of remote access sessions.

DISA Rule

SV-239267r674730_rule

Vulnerability Number

V-239267

Group Title

SRG-OS-000033-VMM-000140

Rule Version

ESXI-67-000010

Severity

CAT II

CCI(s)

• CCI-000068 - The information system implements cryptographic mechanisms to protect the confidentiality of remote access sessions.

Weight

10

Fix Recommendation

Limit the ciphers to FIPS-approved algorithms.

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":

FipsMode yes

or

From a PowerCLI command prompt while connected to the ESXi host, run the following commands:

$esxcli = Get-EsxCli -v2
$arguments = $esxcli.system.security.fips140.ssh.set.CreateArgs()
$arguments.enable = $true
$esxcli.system.security.fips140.ssh.set.Invoke($arguments)

Check Contents

To verify that only FIPS-approved ciphers are in use, run the following command from an SSH session connected to the ESXi host, or from the ESXi shell:

# grep -i "^FipsMode" /etc/ssh/sshd_config

or

From a PowerCLI command prompt while connected to the ESXi host, run the following commands:

$esxcli = Get-EsxCli -v2
$esxcli.system.security.fips140.ssh.get.invoke()

If there is no output or the output is not exactly "FipsMode yes" over SSH, or enabled is not "true" over PowerCLI, this is a finding.

Vulnerability Number

V-239267

Documentable

False

Rule Version

ESXI-67-000010

Severity Override Guidance

To verify that only FIPS-approved ciphers are in use, run the following command from an SSH session connected to the ESXi host, or from the ESXi shell:

# grep -i "^FipsMode" /etc/ssh/sshd_config

or

From a PowerCLI command prompt while connected to the ESXi host, run the following commands:

$esxcli = Get-EsxCli -v2
$esxcli.system.security.fips140.ssh.get.invoke()

If there is no output or the output is not exactly "FipsMode yes" over SSH, or enabled is not "true" over PowerCLI, this is a finding.

Check Content Reference

M

Target Key

5326

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