TMA-AIX-4.4.1.6

Ensure access by root over nfs is disabled or blocked

YüksekDüzey 1Otomatikaix

Açıklama

For each NFS export, ensure that the anon aka root_squash option is set to -2 or -1. Each NFS export on the server should have the anon=-2 option set. With this (default) value root (euid==0) is seen as the account nobody. When anon=0 the remote root user has root access on the NFS mount. Audit: automated read-only check derived from the CIS audit procedure; it prints "compliant" when the control is met.

Nasıl denetlenir

Denetim yöntemi: Kabuk komutu

shell

command -v lsnfsexp >/dev/null 2>&1 || exit 1; out=$( { lsnfsexp | grep -v "anon=-1" | grep anon= ; } 2>/dev/null ); [ -z "$out" ] && echo compliant || printf '%s\n' "$out" | head -n 20

Beklenen çıktı: compliant

Nasıl düzeltilir

Düzeltme yöntemi: Kılavuz veya altyapı yaması

To change this value for all failing NFS exported filesystems: lsnfsexp | grep -v 'anon=-1' | grep anon= | while read fs rest; do chnfsexp -d ${fs} -a -2 done The command chnfsexp re-exports the file or directory with the new settings active.

Özellikler

İşletim sistemleri: Herhangi biri
Etiketler: aixaccounts
Referans: CIS IBM AIX 7 Benchmark v1.2.0 - 4.4.1.6 Ensure access by root over nfs is disabled or blocked

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shell

tmaegis scan --target aix