Host must restrict inter-VM transparent page sharing

OrtaDüzey 1Otomatikvmware

Açıklama

Transparent Page Sharing (TPS) aids in optimizing memory usage among virtual machines but under certain circumstances can be exploited to access data on adjacent virtual machines unauthorizedly. By configuring the Mem.ShareForceSalting parameter, inter-VM TPS is restricted, enhancing isolation and security. The audit reads Mem.ShareForceSalting with esxcli and requires 2. Runs in the ESXi Shell (busybox sh) as root.

Nasıl denetlenir

Denetim yöntemi: Kabuk komutu

shell

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

Beklenen çıktı: compliant

Nasıl düzeltilir

Düzeltme yöntemi: Kılavuz veya altyapı yaması

From the vSphere Web Client: 1. Select a host 2. Click Configure then expand System then select Advanced System settings. 3. Click Edit then Filter for Mem.ShareForceSalting. 4. Set the value to 2. 5. Click OK. Additionally, the following PowerCLI command can be used: Get-VMHost | Get-AdvancedSetting -Name Mem.ShareForceSalting | Set-AdvancedSetting -Value 2

Özellikler

İşletim sistemleri: Herhangi biri
Etiketler: vmwareesxibase
Referans: CIS VMware ESXi 9.0 Benchmark v1.0.0 - 2.10 Host must restrict inter-VM transparent page sharing

Bu ana makineyi denetle

Bunu denetleme izniniz olan bir makinede çalıştırın. Tarama salt okunurdur.

shell

tmaegis scan --target vmware