The SLES for vRealize must implement NSA-approved cryptography to protect classified information in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-239611	VROM-SL-001240	SV-239611r662284_rule		High

Description
Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The SLES for vRealize must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated.

STIG	Date
VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide	2021-07-01

Details

Check Text ( C-42844r662282_chk )
Check the SSH daemon configuration for DoD-approved encryption to protect the confidentiality of SSH remote connections by performing the following commands: Check the Cipher setting in the "sshd_config" file. # grep -i Ciphers /etc/ssh/sshd_config \| grep -v '#' The output must contain either none or any number of the following algorithms: aes128-ctr, aes256-ctr. If the output contains an algorithm not listed above, this is a finding. Expected Output: Ciphers aes256-ctr,aes128-ctr

Check Text ( C-42844r662282_chk )

Check the SSH daemon configuration for DoD-approved encryption to protect the confidentiality of SSH remote connections by performing the following commands:

Check the Cipher setting in the "sshd_config" file.

# grep -i Ciphers /etc/ssh/sshd_config | grep -v '#'

The output must contain either none or any number of the following algorithms:

aes128-ctr, aes256-ctr.

If the output contains an algorithm not listed above, this is a finding.

Expected Output:
Ciphers aes256-ctr,aes128-ctr

Fix Text (F-42803r662283_fix)
Update the Ciphers directive with the following command: # sed -i "/^[^#]*Ciphers/ c\Ciphers aes256-ctr,aes128-ctr" /etc/ssh/sshd_config Save and close the file. Restart the sshd process: # service sshd restart