Ensure root path integrity

ВысокийУровень 1Автоматическаяfreebsd

Описание

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.

Как проверяется

Метод проверки: Команда оболочки

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"

Ожидаемый вывод: compliant

Как исправляется

Метод исправления: Рекомендация или патч инфраструктуры

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

Свойства

Операционные системы: Любая
Теги: freebsdaccounts
Источник: CIS FreeBSD 14 Benchmark v1.0.1 - 6.2.8 Ensure root path integrity

Проверить этот хост

Выполните команду на компьютере, аудит которого вам разрешён. Сканирование работает только на чтение.

shell

tmaegis scan --target freebsd