Ensure shadow group is empty

MittelStufe 1Manuelle Prüfungcos

Beschreibung

The shadow group allows system programs which require access the ability to read the /etc/shadow file. No users should be assigned to the shadow group. Any users assigned to the shadow group would be granted read access to the /etc/shadow file. If attackers can gain read access to the /etc/shadow file, they can easily run a password cracking program against the hashed passwords to break them. Other security information that is stored in the /etc/shadow file (such as expiration) could also be useful to subvert additional user accounts.

So wird geprüft

Prüfmethode: Manuelle Prüfung

Diese Empfehlung kann nicht automatisch geprüft werden. Ein Scan führt sie mit diesen Anweisungen auf, wenn Sie --include-manual übergeben.

Run the following commands and verify no results are returned: # grep ^shadow:[^:]*:[^:]*:[^:]+ /etc/group # awk -F: '($4 == "<shadow-gid>") { print }' /etc/passwd

So wird behoben

Behebungsmethode: Anleitung oder Infrastruktur-Patch

Remove all users from the shadow group, and change the primary group of any users with shadow as their primary group.

Eigenschaften

Betriebssysteme: Beliebig
Tags: container-optimized-oscos
Referenz: CIS Google Container-Optimized OS Benchmark v1.2.0 - 6.2.20 Ensure shadow group is empty