Ensure root path integrity

AltaNível 1Automatizadafreebsd

Descrição

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.

Como é verificado

Método de auditoria: Comando 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"

Saída esperada: compliant

Como é corrigido

Método de correção: Orientação ou patch de infraestrutura

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

Propriedades

Sistemas operacionais: Qualquer
Tags: freebsdaccounts
Referência: CIS FreeBSD 14 Benchmark v1.0.1 - 6.2.8 Ensure root path integrity

Verificar este host

Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.

shell

tmaegis scan --target freebsd