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Nutanix OS must implement cryptography to protect the integrity of remote access sessions by using only HMACs employing FIPS 140-3-approved algorithms.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-279534NXAC-OS-000010SV-279534r1192285_ruleCCI-001453high
Description
Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote access (e.g., RDP) is access to DOD nonpublic information systems by an authorized user (or an information system) communicating through an external, nonorganization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless. Cryptographic mechanisms used for protecting the integrity of information include, for example, signed hash functions using asymmetric cryptography enabling distribution of the public key to verify the hash information while maintaining the confidentiality of the secret key used to generate the hash. Satisfies: SRG-OS-000250-GPOS-00093, SRG-OS-000393-GPOS-00173, SRG-OS-000394-GPOS-00174, SRG-OS-000125-GPOS-00065
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 (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.

NET-14.2Protection of Confidentiality / Integrity Using Encryption
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (31) 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-17(1)Monitoring and Control
1.00
AC-17(2)Protection of Confidentiality and Integrity Using Encryption
1.00
AC-3Access Enforcement
1.00
CM-6Configuration Settings
1.00
CM-7Least Functionality
1.00
IA-2(8)Access to Accounts — Replay Resistant
1.00
IA-2(9)Network Access to Non-privileged Accounts — Replay Resistant
1.00
IA-3Device Identification and Authentication
1.00
IA-3(1)Cryptographic Bidirectional Authentication
1.00
IA-5(1)Password-based Authentication
1.00

+21 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.

3.1.13
1.00
CCI1 mapping
CCI-001453
1.00

Details

Check Text (C-279534r1192285_chk)

Verify Nutanix OS is configured to use approved ciphers. 1. Configure AOS, Prism Central, and Files OS VMs to use only HMACs employing FIPS 140-3-approved algorithms for remote access using the following command. $ sudo grep -i macs /etc/crypto-policies/back-ends/opensshserver.config MACS=hmac-sha2-512,hmac-sha2-256,hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com 2. Verify AHV "Ciphers" configuration using the following command. $ sudo grep -i ciphers /etc/ssh/sshd_config Ciphers aes256-ctr If unapproved ciphers are listed, the "Ciphers" keyword is missing, or the returned line is commented out, this is a finding.

Fix Text (F-83992r1192284_fix)

Configure SSH. 1. For AOS, configure SSH, then restart the SSH for the changes to take effect. $ sudo salt-call state.sls security/CVM/sshdCVM $ sudo systemctl restart sshd 2. For Prism Central, configure SSH, then restart the SSH for the changes to take effect. $ sudo salt-call state.sls security/PCVM/sshdPCVM $ sudo systemctl restart sshd 3. For Files, configure SSH, then restart the SSH for the changes to take effect. $ sudo salt-call state.sls security/AFS/sshdAFS $ sudo systemctl restart sshd 4. For AHV, configure SSH, then restart the SSH for the changes to take effect. $ sudo salt-call state.sls security/KVM/sshdKVM $ sudo systemctl restart sshd