Title

Ubuntu 24.04 LTS 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. (Cat I impact)

Discussion

Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. Ubuntu 24.04 LTS 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-000478-GPOS-00223, SRG-OS-000396-GPOS-00176

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 Ubuntu 24.04 LTSs install. Enabling a FIPS mode on a pre-existing system involves a number of modifications to Ubuntu 24.04 LTS. Refer to the Ubuntu Pro security certification documentation for instructions. A subscription to the "Ubuntu Pro" plan is required to obtain the FIPS Kernel cryptographic modules and enable FIPS. Note: Ubuntu Pro security certification instructions can be found at: https://ubuntu.com/security/certifications/docs/fips-enablement The basic steps use the following commands: $ sudo pro attach <token> $ sudo pro enable fips-updates

Additional Identifiers

Rule ID: SV-270744r1066721_rule

Vulnerability ID: V-270744

Group Title: SRG-OS-000478-GPOS-00223

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.