DISA STIGS Viewer

OL 9 must use mechanisms meeting the requirements of applicable federal laws, executive orders, directives, policies, regulations, standards, and guidance for authentication to a cryptographic module.

Overview

Finding ID Version Rule ID IA Controls Severity
V-271762 OL09-00-002424 SV-271762r1091998_rule   Medium
Description
Overriding the system crypto policy makes the behavior of Kerberos violate expectations and makes system configuration more fragmented.
STIG Date
Oracle Linux 9 Security Technical Implementation Guide 2025-05-08

Details

Check Text (C-75812r1091996_chk)
Verify that OL 9 configures Kerberos to use the systemwide crypto policy with the following command:

$ file /etc/crypto-policies/back-ends/krb5.config
/etc/crypto-policies/back-ends/krb5.config: symbolic link to /usr/share/crypto-policies/FIPS/krb5.txt

If the symlink does not exist or points to a different target, this is a finding.
Fix Text (F-75719r1091997_fix)
Configure Kerberos to use system crypto policy.

Remove incorrect symlink if it exists using the following command:

$ sudo rm /etc/crypto-policies/back-ends/krb5.config

Create a symlink pointing to system crypto policy in the Kerberos configuration using the following command:

$ sudo ln -s /usr/share/crypto-policies/FIPS/krb5.txt /etc/crypto-policies/back-ends/krb5.config