STIGQter: STIG Summary: VMware vSphere 7.0 ESXi Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 02 Apr 2025:

The ESXi host must enable strict x509 verification for SSL syslog endpoints.

DISA Rule

SV-256437r959010_rule

Vulnerability Number

V-256437

Group Title

SRG-OS-000480-VMM-002000

Rule Version

ESXI-70-000085

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

From an ESXi shell, run the following commands:

# esxcli system syslog config set --x509-strict="true"
# esxcli system syslog reload

or

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

$esxcli = Get-EsxCli -v2
$arguments = $esxcli.system.syslog.config.set.CreateArgs()
$arguments.x509strict = $true
$esxcli.system.syslog.config.set.Invoke($arguments)
$esxcli.system.syslog.reload.Invoke()

Check Contents

If SSL is not used for the syslog target, this is not applicable.

From an ESXi shell, run the following command:

# esxcli system syslog config get|grep 509

or

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

$esxcli = Get-EsxCli -v2
$esxcli.system.syslog.config.get.invoke()|Select StrictX509Compliance

Expected result:

Strict X509Compliance: true

If the output does not match the expected result, this is a finding.

Vulnerability Number

V-256437

Documentable

False

Rule Version

ESXI-70-000085

Severity Override Guidance

If SSL is not used for the syslog target, this is not applicable.

From an ESXi shell, run the following command:

# esxcli system syslog config get|grep 509

or

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

$esxcli = Get-EsxCli -v2
$esxcli.system.syslog.config.get.invoke()|Select StrictX509Compliance

Expected result:

Strict X509Compliance: true

If the output does not match the expected result, this is a finding.

Check Content Reference

M

Target Key

5518