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1.281 RHEL-09-411085

Information

RHEL 9 must automatically lock an account when three unsuccessful logon attempts occur during a 15-minute time period.

GROUP ID: V-258056
RULE ID: SV-258056r1045143

By limiting the number of failed logon 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

Solution

To configure RHEL 9 to lock out the "root" account after a number of incorrect logon attempts within 15 minutes using "pam_faillock.so", enable the feature using the following command:

$ sudo authselect enable-feature with-faillock

Then edit the "/etc/security/faillock.conf" file as follows:

fail_interval = 900

See Also

https://workbench.cisecurity.org/benchmarks/22008

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-7a., 800-53|AC-7b., CAT|II, CCI|CCI-000044, CCI|CCI-002238, Rule-ID|SV-258056r1045143_rule, STIG-ID|RHEL-09-411085, Vuln-ID|V-258056

Plugin: Unix

Control ID: 13a09a738fc7317470c937fadcd66e37b71a3932b0bf4ada7303cfbf95550d9f