Nutanix OS must define default permissions for all authenticated users so the user can only read and modify their own files.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-279583 | NXAC-OS-000130 | SV-279583r1192449_rule | CCI-000213 | medium |
| Description | ||||
| Setting the most restrictive default permissions ensures that when new accounts are created they do not have unnecessary access. | ||||
| STIG | Date | |||
| Nutanix Acropolis GPOS Security Technical Implementation Guide | 2026-02-24 | |||
Related Frameworks
4 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
AC-3
1.00
- DISA · V1R1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1712 mappings
3.1.1
1.00
- DISA · V1R1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.1.2
1.00
- DISA · V1R1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000213
1.00
- DISA · V1R1 · disa_xccdf · related
Details
Check Text (C-279583r1192449_chk)
Verify Nutanix AOS defines default permissions for all authenticated users in such a way that the user can only read and modify their own files using the following command.
$ sudo grep -i umask /etc/login.defs
UMASK 077
If the value for the "UMASK" parameter is not "077", or the "UMASK" parameter is missing, or commented out, this is a finding.
Fix Text (F-84041r1191712_fix)
1. For AOS, configure the default permissions "UMASK" to "077" using the following command.
salt-call state.sls security/CVM/shellCVM
2. For Prism Central, configure the default permissions "UMASK" to "077" using the following command.
salt-call state.sls security/PCVM/shellPCVM
3. For Files, configure the default permissions "UMASK" to "077" using the following command.
salt-call state.sls security/AFS/shellAFS
4. For AHV, configure the default permissions "UMASK" to "077" using the following command.
salt-call state.sls security/KVM/shellKVM