Ensure setuid programs do not create core dumps

SrednjaNivo 1Automatskabottlerocket

Opis

A core dump is the memory of an executable program. It is generally used to determine why a program aborted. It can also be used to glean confidential information from a core file. The audit reads /proc/sys/fs/suid_dumpable and requires 0. Run tmaegis on the host through the admin container root shell (sudo sheltie).

Kako se proverava

Metod provere: Komanda ljuske

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

Očekivani izlaz: compliant

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

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

Svojstva

Operativni sistemi: Bilo koji
Oznake: bottlerocketsystem
Referenca: CIS Bottlerocket Benchmark v1.0.0 - 1.4.1 Ensure setuid programs do not create core dumps

Proverite ovaj računar

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

shell

tmaegis scan --target bottlerocket