Ensure permissions on /etc/shells are configured

OrtaDüzey 1Otomatikfreebsd

Açıklama

/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.

Nasıl denetlenir

Denetim yöntemi: Kabuk komutu

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"

Beklenen çıktı: compliant

Nasıl düzeltilir

Düzeltme yöntemi: Kılavuz veya altyapı yaması

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

Özellikler

İşletim sistemleri: Herhangi biri
Etiketler: freebsdpermissions
Referans: CIS FreeBSD 14 Benchmark v1.0.1 - 6.1.4 Ensure permissions on /etc/shells are configured

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shell

tmaegis scan --target freebsd