Ensure unprivileged eBPF is disabled

SedangLevel 1Otomatisbottlerocket

Deskripsi

Unprivileged users should not have access to eBPF. The audit reads /proc/sys/kernel/unprivileged_bpf_disabled and requires 1. Run tmaegis on the host through the admin container root shell (sudo sheltie).

Cara pemeriksaan

Metode audit: Perintah shell

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 $2)"; bad=1; }; }
chk kernel.unprivileged_bpf_disabled 1
[ "$bad" -eq 0 ] && echo compliant

Output yang diharapkan: compliant

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

Run the following command to set the active kernel parameter and persist the setting: # apiclient apply <<EOF [settings.kernel.sysctl] "kernel.unprivileged_bpf_disabled" = "1" EOF

Properti

Sistem operasi: Apa saja
Tag: bottlerocketsystem
Referensi: CIS Bottlerocket Benchmark v1.0.0 - 1.4.3 Ensure unprivileged eBPF is disabled

Periksa host ini

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

shell

tmaegis scan --target bottlerocket