Ensure permissions on /etc/shells are configured

SrednjaNivo 1Automatskafreebsd

Opis

/etc/shells is a text file that contains the full pathnames of valid login shells. This file is consulted by chsh and is available to be queried by other programs. It is critical to protect the /etc/shells file from unauthorized access. Although it is protected by default, the file permissions could be changed inadvertently or through malicious actions. Audit: compares `ls -ld` mode (this mode or more restrictive), owner and group with the CIS values.

Kako se proverava

Metod provere: Komanda ljuske

shell

r=compliant; for f in /etc/shells; do if [ -e "$f" ]; then set -- $(ls -ld "$f"); s=$(printf '%s %s %s\n' "$1" "$3" "$4" | awk -v m='rw-r--r--' -v o='root' -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; echo "$r"

Očekivani izlaz: compliant

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

Run the following commands to remove excess permissions, set owner, and set group on /etc/shells: # chmod u-x,go-wx /etc/shells # chown root:wheel /etc/shells

Svojstva

Operativni sistemi: Bilo koji
Oznake: freebsdpermissions
Referenca: CIS FreeBSD 14 Benchmark v1.0.1 - 6.1.4 Ensure permissions on /etc/shells are configured

Proverite ovaj računar

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

shell

tmaegis scan --target freebsd