← Back to Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide

V-238363

CAT I (High)

The Ubuntu operating system must implement NIST FIPS-validated cryptography to protect classified information and for the following: To provision digital signatures, to generate cryptographic hashes, and to protect unclassified information requiring confidentiality and cryptographic protection in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.

Rule ID

SV-238363r1014774_rule

STIG

Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide

Version

V2R4

CCIs

CCI-002450

Discussion

Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The operating system must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated. Satisfies: SRG-OS-000396-GPOS-00176, SRG-OS-000478-GPOS-00223

Check Content

Verify the system is configured to run in FIPS mode with the following command: 
 
$ grep -i 1 /proc/sys/crypto/fips_enabled 
1 
 
If a value of "1" is not returned, this is a finding.

Fix Text

Configure the system to run in FIPS mode. Add "fips=1" to the kernel parameter during the Ubuntu operating systems install. 
 
Enabling a FIPS mode on a pre-existing system involves a number of modifications to the Ubuntu operating system. Refer to the Ubuntu Server 20.04 FIPS 140-2 security policy document for instructions.  
 
A subscription to the "Ubuntu Pro" plan is required to obtain the FIPS Kernel cryptographic modules and enable FIPS.