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Nutanix OS must enforce the limit of three consecutive invalid logon attempts by a user during a 15-minute time period.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-279546NXAC-OS-000034SV-279546r1192554_ruleCCI-000044medium
Description
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account. Satisfies: SRG-OS-000021-GPOS-00005, SRG-OS-000329-GPOS-00128
STIGDate
Nutanix Acropolis GPOS Security Technical Implementation Guide2026-02-24

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (6) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-01.2Authenticate, Authorize and Audit (AAA)
1.00
IAC-02Identification & Authentication for Organizational Users
1.00
IAC-03Identification & Authentication for Non-Organizational Users
1.00
IAC-04Identification & Authentication for Devices
1.00
IAC-05Identification & Authentication for Third-Party Technology Assets, Applications and/or Services (TAAS)
1.00
IAC-22Account Lockout
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (56) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-10Concurrent Session Control
1.00
AC-12Session Termination
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(10)Shared and Group Account Credential Change
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00

+46 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.1.8
1.00
CCI1 mapping
CCI-000044
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.AA-03
1.00

Who does this work

7 NICE work roles and 5 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-279546r1192554_chk)

Verify accounts are locked for a minimum of 15 minutes after three unsuccessful logon attempts within a period of 15 minutes. 1. For AOS OS, Prism Central OS and Files OS, enter the following commands. Verify the deny option is set to "3" or less (but not "0") and the "fail_interval" option is not set to "900" or more. $ sudo grep -i deny /etc/security/faillock.conf deny = 3 even_deny_root $ sudo grep -i fail_interval /etc/security/faillock.conf fail_interval = 900 2. For AHV OS, verify by entering the following commands for pam.d. $ sudo grep pam_faillock.so /etc/pam.d/password-auth auth required pam_faillock.so preauth silent audit deny=3 even_deny_root unlock_time=900 root_unlock_time=900 fail_interval=900 auth [default=die] pam_faillock.so authfail audit deny=3 even_deny_root unlock_time=900 root_unlock_time=900 fail_interval=900 3. Verify the following settings are explicitly configured. - The "deny" parameter is set to "0" or a value greater than "3" on both "auth" lines with the "pam_faillock.so" module. - The "even_deny_root" parameter is not set on both "auth" lines with the "pam_faillock.so" module. - The "fail_interval" parameter is set to "0" or is set to a value less than "900" on both "auth" lines with the "pam_faillock.so" module. - The "unlock_time" parameter is not set to "0", "never", or is set to a value less than "900" on both "auth" lines with the "pam_faillock.so" module. - Any line referencing the "pam_faillock.so" module is commented out. $ sudo grep pam_faillock.so /etc/pam.d/system-auth auth required pam_faillock.so preauth silent audit deny=3 even_deny_root fail_interval=900 unlock_time=900 auth [default=die] pam_faillock.so authfail audit deny=3 even_deny_root fail_interval=900 unlock_time=900 account required pam_faillock.so 4. Verify the following settings are explicitly set. - The "deny" parameter is set to "0" or a value greater than "3" on both "auth" lines with the "pam_faillock.so" module. - The "even_deny_root" parameter is not set on both "auth" lines with the "pam_faillock.so" module. - The "fail_interval" parameter is set to "0" or is set to a value less than "900" on both "auth" lines with the "pam_faillock.so" module. - The "unlock_time" parameter is not set to "0", "never", or is set to a value less than "900" on both "auth" lines with the "pam_faillock.so" module. - Any line referencing the "pam_faillock.so" module is commented out. If all required configuration settings are not met or if any settings are missing, this is a finding.

Fix Text (F-84004r1192059_fix)

Configure Nutanix OS to use complex password. 1. For AOS, enter the following command. $ sudo salt-call state.sls security/CVM/pamCVM.sls 2. For Prism Central, enter the following command. $ sudo salt-call state.sls security/PCVM/pamPCVM.sls 3. For Files, enter the following command. $ sudo salt-call state.sls security/AFS/pamAFS.sls 4. For AHV OS CVM, enter the following command. $ ncli cluster edit-hypervisor-security-params enable-high-strength-password=true