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RHEL-10-600450 RHEL 10 must not have unauthorized accounts.

DISA STIG library V1R3
All changes in this version
first version loaded CAT II

Maps to AC-3 via CCI-000213

Title

RHEL 10 must not have unauthorized accounts.

Control

Verify RHEL 10 has no unauthorized local interactive user accounts with the following command: $ less /etc/passwd root:x:0:0:root:/root:/bin/bash ... nsauser:x:1000:1000:nsauser:/home/nsauser:/bin/bash doduser:x:1001:1001:doduser:/home/doduser:/bin/bash Interactive user accounts generally will have a user ID (UID) of 1000 or greater, a home directory in a specific partition, and an interactive shell. Obtain the list of interactive user accounts authorized to be on the system from the system administrator or information system security officer and compare it to the list of local interactive user accounts on the system. If there are unauthorized local user accounts on the system, this is a finding.

Discussion

Having lockouts persist across reboots ensures that account is unlocked only by an administrator. If the lockouts did not persist across reboots, an attacker could reboot the system to continue brute force attacks against the accounts on the system.

Related controls

CCI-000213

Fix

Configure RHEL 10 to have no unauthorized local interactive user accounts with the following command, where is the unauthorized account: $ sudo userdel