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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.


Finding ID Version Rule ID IA Controls Severity
V-238363 UBTU-20-010442 SV-238363r654320_rule High
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
Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide 2021-11-19


Check Text ( C-41573r654262_chk )
Verify the system is configured to run in FIPS mode with the following command:

$ grep -i 1 /proc/sys/crypto/fips_enabled

If a value of "1" is not returned, this is a finding.
Fix Text (F-41532r654263_fix)
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 18.04 FIPS 140-2 security policy document for instructions.

A subscription to the "Ubuntu Advantage" plan is required in order to obtain the FIPS Kernel cryptographic modules and enable FIPS.