STIGQter: STIG Summary: VMware vSphere 8.0 ESXi Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 31 Oct 2023:

The ESXi host Secure Shell (SSH) daemon must set a timeout count on idle sessions.

DISA Rule

SV-258765r933356_rule

Vulnerability Number

V-258765

Group Title

SRG-OS-000480-VMM-002000

Rule Version

ESXI-80-000210

Severity

CAT III

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

From an ESXi shell, run the following command:

# esxcli system ssh server config set -k clientalivecountmax -v 3

or

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

$esxcli = Get-EsxCli -v2
$arguments = $esxcli.system.ssh.server.config.set.CreateArgs()
$arguments.keyword = 'clientalivecountmax'
$arguments.value = '3'
$esxcli.system.ssh.server.config.set.Invoke($arguments)

Check Contents

From an ESXi shell, run the following command:

# esxcli system ssh server config list -k clientalivecountmax

or

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

$esxcli = Get-EsxCli -v2
$esxcli.system.ssh.server.config.list.invoke() | Where-Object {$_.Key -eq 'clientalivecountmax'}

Example result:

clientalivecountmax 3

If "clientalivecountmax" is not configured to "3", this is a finding.

Vulnerability Number

V-258765

Documentable

False

Rule Version

ESXI-80-000210

Severity Override Guidance

From an ESXi shell, run the following command:

# esxcli system ssh server config list -k clientalivecountmax

or

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

$esxcli = Get-EsxCli -v2
$esxcli.system.ssh.server.config.list.invoke() | Where-Object {$_.Key -eq 'clientalivecountmax'}

Example result:

clientalivecountmax 3

If "clientalivecountmax" is not configured to "3", this is a finding.

Check Content Reference

M

Target Key

5562