Ensure at is restricted to authorized users

VisokaNivo 1Automatskafreebsd

Opis

The at utility allows some moderately complex time specifications. It accepts times of the form HHMM or HH:MM to run a job at a specific time of day. On many systems, only the system administrator is authorized to schedule at jobs. Using the at.allow file to control who can run at jobs enforces this policy. It is easier to manage an allow list than a deny list. Audit: /var/at/at.allow must exist with mode 640 or stricter, owner root or daemon, group wheel; at.deny must be absent or equally restricted.

Kako se proverava

Metod provere: Komanda ljuske

shell

r=compliant; for f in /var/at/at.allow; do if [ -e "$f" ]; then set -- $(ls -ld "$f"); s=$(printf '%s %s %s\n' "$1" "$3" "$4" | awk -v m='rw-r-----' -v o='root|daemon' -v g='wheel' '{ok=1; for(i=1;i<=9;i++) if(substr(m,i,1)=="-" && substr($1,i+1,1)!="-") ok=0; if(o!="" && $2 !~ ("^(" o ")$")) ok=0; if(g!="" && $3 !~ ("^(" g ")$")) ok=0; print (ok ? "ok" : $0)}'); [ "$s" = ok ] || r="$f: $s"; else r="$f: missing"; fi; done; for f in /var/at/at.deny; do if [ -e "$f" ]; then set -- $(ls -ld "$f"); s=$(printf '%s %s %s\n' "$1" "$3" "$4" | awk -v m='rw-r-----' -v o='root|daemon' -v g='wheel' '{ok=1; for(i=1;i<=9;i++) if(substr(m,i,1)=="-" && substr($1,i+1,1)!="-") ok=0; if(o!="" && $2 !~ ("^(" o ")$")) ok=0; if(g!="" && $3 !~ ("^(" g ")$")) ok=0; print (ok ? "ok" : $0)}'); [ "$s" = ok ] || r="$f: $s"; else :; fi; done; echo "$r"

Očekivani izlaz: compliant

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

Run the following script to: /var/at/at.allow: o Create the file if it doesn't exist o Change owner or user root or daemon o Change group to wheel o Change mode to 640 or more restrictive -IF- /var/at/at.deny exists: o Change owner or user root o Change group to wheel o Change mode to 640 or more restrictive #!/bin/sh { [ ! -e "/var/at/at.allow" ] && touch /var/at/at.allow chown root:wheel /var/at/at.allow chmod u-x,g-wx,o-rwx /var/at/at.allow [ -e "/var/at/at.deny" ] && chown root:wheel /var/at/at.deny [ -e "/var/at/at.deny" ] && chmod u-x,g-wx,o-rwx /var/at/at.deny }

Svojstva

Operativni sistemi: Bilo koji
Oznake: freebsdaccounts
Referenca: CIS FreeBSD 14 Benchmark v1.0.1 - 4.1.2.1 Ensure at is restricted to authorized users

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

shell

tmaegis scan --target freebsd