SPLK-CL-000060 - Splunk Enterprise must enforce the limit of three consecutive invalid logon attempts by a user during a 15-minute time period.

Information

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.

In most enterprise environments, this requirement is usually mitigated by a properly configured external authentication system, like LDAP. Splunk local authentication takes precedence over other forms of authentication. The mitigation settings in this requirement apply in the event a local account is created.

Solution

If the authentication.conf file does not exist, copy the file from $SPLUNK_HOME/etc/system/default to the $SPLUNK_HOME/etc/system/local directory.

Modify the following lines in the authentication.conf file under the [splunk_auth]:

lockoutAttempts = 3
lockoutThresholdMins = 15

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Splunk_Enterprise_8-x_for_Linux_V2R1_STIG.zip

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-7a., CAT|II, CCI|CCI-000044, Rule-ID|SV-251659r960840_rule, STIG-ID|SPLK-CL-000060, Vuln-ID|V-251659

Plugin: Unix

Control ID: 82ebc15622139d4e47db637d3d6de4f121154a5035a25624f267ee18b34651ee