The SSH daemon must be configured to only use Message Authentication Codes (MACs) employing FIPS 140-2 approved cryptographic hash algorithms.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-63203	ESXI-06-000017	SV-77693r1_rule		Medium

Description
DoD information systems are required to use FIPS 140-2 approved cryptographic hash functions. Note: This does not imply FIPS 140-2 certification.

STIG	Date
VMware vSphere ESXi 6.0 Security Technical Implementation Guide	2019-01-04

Details

Check Text ( C-63937r1_chk )
To verify the MACs setting, run the following command: # grep -i "^MACs" /etc/ssh/sshd_config If there is no output or the output is not exactly "MACs hmac-sha1,hmac-sha2-256,hmac-sha2-512", this is a finding.

Fix Text (F-69121r1_fix)
To set the MACs setting, add or correct the following line in "/etc/ssh/sshd_config": MACs hmac-sha1,hmac-sha2-256,hmac-sha2-512