Ensure /etc/shadow password fields are not empty

HighLevel 1Automatedazure-container-linux

Description

An account with an empty password field means that anybody may log in as that user without providing a password. Audit: Passes when no account in /etc/shadow has an empty password field (needs root).

How it is checked

Audit method: Shell command

shell

[ -r /etc/shadow ] || exit 1; awk -F: '($2 == ""){f=1} END{exit f}' /etc/shadow && echo compliant || echo noncompliant

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

If any accounts in the /etc/shadow file do not have a password, run the following command to lock the account until it can be determined why it does not have a password: # passwd -l <username> Also, check to see if the account is logged in and investigate what it is being used for to determine if it needs to be forced off.

Properties

Operating systems: Any
Tags: azure-container-linuxaccounts
Reference: CIS Azure Container Linux Benchmark v1.0.0 - 7.2.2 Ensure /etc/shadow password fields are not empty

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target azure-container-linux