Ensure user namespaces are disabled

DüşükDüzey 2Otomatikbottlerocket

Açıklama

User namespaces should be disabled unless required. Note that user namespaces can be necessary in environments where containers running as unprivileged users are meant to run other containers. These are often referred to as "rootless" containers. The audit reads /proc/sys/user/max_user_namespaces and requires 0. Run tmaegis on the host through the admin container root shell (sudo sheltie).

Nasıl denetlenir

Denetim yöntemi: Kabuk komutu

shell

bad=0
chk() { f=/proc/sys/$(printf %s "$1" | tr . /); v=$(cat "$f" 2>/dev/null) || { echo "$1: not readable"; bad=1; return; }; [ "$v" = "$2" ] || { echo "$1 = $v (expected $2)"; bad=1; }; }
chk user.max_user_namespaces 0
[ "$bad" -eq 0 ] && echo compliant

Beklenen çıktı: compliant

Nasıl düzeltilir

Düzeltme yöntemi: Kılavuz veya altyapı yaması

Run the following command to set the active kernel parameter and persist the setting: # apiclient apply <<EOF [settings.kernel.sysctl] "user.max_user_namespaces" = "0" EOF

Özellikler

İşletim sistemleri: Herhangi biri
Etiketler: bottlerocketsystem
Referans: CIS Bottlerocket Benchmark v1.0.0 - 1.4.4 Ensure user namespaces are disabled

Bu ana makineyi denetle

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

shell

tmaegis scan --target bottlerocket --level 2