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Nutanix OS must require the change of at least 50 percent of the total number of characters when passwords are changed.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-279608NXAC-OS-000165SV-279608r1192322_ruleCCI-004066medium
Description
If the operating system allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for attempts at guessing and brute-force attacks. The number of changed characters refers to the number of changes required with respect to the total number of positions in the current password. In other words, characters may be the same within the two passwords; however, the positions of the like characters must be different. If the password length is an odd number then number of changed characters must be rounded up. For example, a password length of 15 characters must require the change of at least eight characters.
STIGDate
Nutanix Acropolis GPOS Security Technical Implementation Guide2026-02-24

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (3) 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-10Authenticator Management
0.50
IAC-10.1Password-Based Authentication
0.50
IAC-10.4Automated Support For Password Strength
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (61) 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

+51 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (4) 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.

3.5.10
1.00
3.5.7
1.00
3.5.8
1.00
3.5.9
1.00
CCI1 mapping
CCI-004066
1.00

Details

Check Text (C-279608r1192322_chk)

1. Verify Nutanix AOS is configured to require complex passwords using the following command. Note: The values to require for complex passwords is located in "/etc/security/pwquality.conf". $ sudo grep difok /etc/security/pwquality.conf difok = 8 If the value of "difok" is set to less than "8", this is a finding. 2. Verify Nutanix AOS is configured to require complex passwords using the following command. $ sudo grep minclass /etc/security/pwquality.conf minclass = 4 If the value of "minclass" is set to less than "4", this is a finding. 3. Verify Nutanix AOS is configured to require complex passwords using the following command. $ sudo grep maxrepeat /etc/security/pwquality.conf maxrepeat = 2 If the value of "maxrepeat" is set to more than "2", this is a finding. 4. Verify Nutanix AOS is configured to require complex passwords using the following command. $ sudo grep maxclassrepeat /etc/security/pwquality.conf maxclassrepeat = 4 If the value of "maxclassrepeat" is set to more than "4", this is a finding.

Fix Text (F-84066r1192321_fix)

Configure Nutanix OS to use complex password by running the following command. 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