Ensure no duplicate UIDs exist

MoyenneNiveau 1Automatiséefreebsd

Description

Although the adduser or pw program will not let you create a duplicate User ID (UID), an administrator can manually edit the /etc/passwd file and change the UID field. Users must be assigned unique UIDs for accountability and to ensure appropriate access protections. Audit: automated read-only check derived from the CIS audit procedure; it prints "compliant" when the control is met.

Méthode de vérification

Méthode d'audit: Commande shell

shell

command -v cut >/dev/null 2>&1 || exit 1; out=$( { cut -d: -f3 /etc/passwd | sort -n | uniq -d ; } 2>/dev/null ); [ -z "$out" ] && echo compliant || printf '%s\n' "$out" | head -n 20

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Based on the audit script's results, establish unique UIDs and review all files owned by the shared UIDs to determine which UID they are supposed to belong to.

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: freebsdaccounts
Référence: CIS FreeBSD 14 Benchmark v1.0.1 - 6.2.4 Ensure no duplicate UIDs exist

Vérifier cet hôte

Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.

shell

tmaegis scan --target freebsd