Ensure root path integrity

高レベル 1自動freebsd

説明

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.

チェック方法

監査方法: シェルコマンド

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"

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

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

プロパティ

オペレーティングシステム: すべて
タグ: freebsdaccounts
参照: CIS FreeBSD 14 Benchmark v1.0.1 - 6.2.8 Ensure root path integrity

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監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target freebsd