Ensure root path integrity

TinggiLevel 1Otomatisfreebsd

Deskripsi

The root user can execute any command on the system and could be fooled into executing programs unintentionally if the PATH is not set correctly. Including the current working directory (.) or other writable directory in root's executable path makes it likely that an attacker can gain superuser access by forcing an administrator operating as root to execute a Trojan horse program. Audit: root's login PATH must not contain ::, a trailing :, '.', non-directories, or directories not owned by root or writable by group/other.

Cara pemeriksaan

Metode audit: Perintah shell

shell

p=$(su - root -c 'echo $PATH' 2>/dev/null | tail -n 1); [ -n "$p" ] || exit 1; r=compliant; case "$p" in *::*) r="PATH contains an empty directory (::)";; *:) r="PATH has a trailing :";; esac; IFS=:; set -- $p; unset IFS; for d in "$@"; do [ "$d" = . ] && r="PATH contains ."; if [ -d "$d" ]; then s=$(ls -ld "$d/" | awk 'substr($1,6,1)=="w" || substr($1,9,1)=="w" || $3!="root" {print $1, $3}'); [ -z "$s" ] || r="$d: $s"; elif [ -n "$d" ]; then r="$d is not a directory"; fi; done; echo "$r"

Output yang diharapkan: compliant

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

Correct or justify any: Locations that are not directories Empty directories (::) Trailing (:) Current working directory (.) Non root owned directories Directories that less restrictive than mode 0755

Properti

Sistem operasi: Apa saja
Tag: freebsdaccounts
Referensi: CIS FreeBSD 14 Benchmark v1.0.1 - 6.2.8 Ensure root path integrity

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shell

tmaegis scan --target freebsd