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RHEL-10-600425 RHEL 10 must maintain an account lock until the locked account is released by an administrator.

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

Maps to AC-7 via CCI-002238, CCI-000044

Title

RHEL 10 must maintain an account lock until the locked account is released by an administrator.

Control

Verify RHEL 10 is configured to lock an account after three unsuccessful login attempts until released by an administrator with the following command: $ sudo grep 'unlock_time =' /etc/security/faillock.conf unlock_time = 0 If the "unlock_time" option is not set to "0", or the line is missing or commented out, this is a finding.

Discussion

By limiting the number of failed login attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced. Limits are imposed by locking the account. Satisfies: SRG-OS-000329-GPOS-00128, SRG-OS-000021-GPOS-00005

Related controls

CCI-000044, CCI-002238

Fix

Configure RHEL 10 to lock an account after three unsuccessful login attempts until released by an administrator with the following command: $ authselect enable-feature with-faillock Edit the "/etc/security/faillock.conf" file as follows: unlock_time = 0