Host must not suppress warnings about unmitigated hyperthreading vulnerabilities

보통레벨 1자동vmware

설명

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.

점검 방법

감사 방식: 셸 명령

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

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

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

속성

운영 체제: 모두
태그: vmwareesxibase
참고 자료: CIS VMware ESXi 9.0 Benchmark v1.0.0 - 2.9 Host must not suppress warnings about unmitigated hyperthreading vulnerabilities

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shell

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