The ESXi host SSH daemon must be configured to only use FIPS 140-2 validated ciphers.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-256449 | ESXI-70-000274 | SV-256449r959006_rule | CCI-002450 | medium |
| Description | ||||
| Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. ESXi must implement cryptographic modules adhering to the higher standards approved by the federal government because this provides assurance they have been tested and validated. | ||||
| STIG | Date | |||
| VMware vSphere 7.0 ESXi Security Technical Implementation Guide | 2025-02-11 | |||
Related Frameworks
3 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
SC-13
1.00
- DISA · V1R4 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1711 mapping
3.13.11
1.00
- DISA · V1R4 · 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-002450
1.00
- DISA · V1R4 · disa_xccdf · related
Details
Check Text (C-256449r959006_chk)
From an ESXi shell, run the following command:
# /usr/lib/vmware/openssh/bin/sshd -T|grep ciphers
Expected result:
ciphers aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
If the output does not match the expected result, this is a finding.
Fix Text (F-60067r886127_fix)
From an ESXi shell, add or correct the following line in "/etc/ssh/sshd_config":
Ciphers aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr