TMA-AIX-4.4.1.6

Ensure access by root over nfs is disabled or blocked

VisokaNivo 1Automatskaaix

Opis

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.

Kako se proverava

Metod provere: Komanda ljuske

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

Očekivani izlaz: compliant

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

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.

Svojstva

Operativni sistemi: Bilo koji
Oznake: aixaccounts
Referenca: CIS IBM AIX 7 Benchmark v1.2.0 - 4.4.1.6 Ensure access by root over nfs is disabled or blocked

Proverite ovaj računar

Pokrenite ovo na računaru za koji imate dozvolu za proveru. Skeniranje radi u režimu samo za čitanje.

shell

tmaegis scan --target aix