STIGQter: STIG Summary: VMware vSphere 6.7 ESXi Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 09 Mar 2021:

The ESXi host SSH daemon must be configured to only use FIPS 140-2 approved ciphers.

DISA Rule

SV-239331r674922_rule

Vulnerability Number

V-239331

Group Title

SRG-OS-000478-VMM-001980

Rule Version

ESXI-67-100010

Severity

CAT II

CCI(s)

• CCI-002450 - The information system implements organization-defined cryptographic uses and type of cryptography required for each use in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.

Weight

10

Fix Recommendation

Limit the ciphers to algorithms that are FIPS approved. Counter (CTR) mode is also preferred over cipher-block chaining (CBC) mode.

Add or correct the following line in "/etc/ssh/sshd_config":

Ciphers aes128-ctr,aes192-ctr,aes256-ctr

Check Contents

Verify that only FIPS-approved ciphers are used by running the following command:

# grep -i "^Ciphers" /etc/ssh/sshd_config

If there is no output, or the output is not exactly "Ciphers aes128-ctr,aes192-ctr,aes256-ctr", this is a finding.

Vulnerability Number

V-239331

Documentable

False

Rule Version

ESXI-67-100010

Severity Override Guidance

Verify that only FIPS-approved ciphers are used by running the following command:

# grep -i "^Ciphers" /etc/ssh/sshd_config

If there is no output, or the output is not exactly "Ciphers aes128-ctr,aes192-ctr,aes256-ctr", this is a finding.

Check Content Reference

M

Target Key

5326

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