TMA-ESXI9-2.9

Host must not suppress warnings about unmitigated hyperthreading vulnerabilities

SedangLevel 1Otomatisvmware

Deskripsi

It is imperative to retain hyperthreading security warnings as they indicate unmitigated CPU vulnerabilities. The parameter governing this behavior is UserVars.SuppressHyperthreadWarning, with a recommended setting of 0. The audit reads UserVars.SuppressHyperthreadWarning with esxcli and requires 0. Runs in the ESXi Shell (busybox sh) as root.

Cara pemeriksaan

Metode audit: Perintah shell

shell

out=$(esxcli system settings advanced list -o /UserVars/SuppressHyperthreadWarning 2>/dev/null) || exit 1
v=$(printf '%s\n' "$out" | awk '$1=="Int" && $2=="Value:" {print $3; exit}')
case "$v" in ''|*[!0-9-]*) echo '/UserVars/SuppressHyperthreadWarning: no integer value'; exit 1 ;; esac
if [ "$v" -eq 0 ]; then echo compliant; else echo "/UserVars/SuppressHyperthreadWarning = $v (expected 0)"; fi

Output yang diharapkan: compliant

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

1. Utilize the administrative PowerCLI session: execute Get-VMHost | Get-AdvancedSetting -Name UserVars.SuppressHyperthreadWarning | Set-AdvancedSetting - Value 0 -Confirm:$false

Properti

Sistem operasi: Apa saja
Tag: vmwareesxibase
Referensi: CIS VMware ESXi 9.0 Benchmark v1.0.0 - 2.9 Host must not suppress warnings about unmitigated hyperthreading vulnerabilities

Periksa host ini

Jalankan ini pada mesin yang diizinkan untuk Anda audit. Pemindaian bersifat hanya baca.

shell

tmaegis scan --target vmware