The UEM server must automatically lock the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-234491	SRG-APP-000345	SRG-APP-000345-UEM-000218	SV-234491r961368_rule	2024-12-09	2

Description
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:FMT_SMF.1(2)b Reference:PP-MDM-431030

ℹ️ Check
Requirement is Not Applicable when UEM server is configured to use DoD Central Directory Service for administrator account authentication. Verify the UEM server automatically locks the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded. If the UEM server does not automatically lock the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded, this is a finding.

ℹ️ Check

Requirement is Not Applicable when UEM server is configured to use DoD Central Directory Service for administrator account authentication. Verify the UEM server automatically locks the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded. If the UEM server does not automatically lock the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded, this is a finding.

✔️ Fix
Configure the UEM server to automatically lock the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded.