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RHEL 8, for certificate-based authentication, must enforce authorized access to the corresponding private key.


Overview

Finding ID Version Rule ID IA Controls Severity
V-230230 RHEL-08-010100 SV-230230r627750_rule Medium
Description
If an unauthorized user obtains access to a private key without a passcode, that user would have unauthorized access to any system where the associated public key has been installed.
STIG Date
Red Hat Enterprise Linux 8 Security Technical Implementation Guide 2022-09-07

Details

Check Text ( C-32899r567436_chk )
Verify the SSH private key files have a passcode.

For each private key stored on the system, use the following command:

$ sudo ssh-keygen -y -f /path/to/file

If the contents of the key are displayed, this is a finding.
Fix Text (F-32874r567437_fix)
Create a new private and public key pair that utilizes a passcode with the following command:

$ sudo ssh-keygen -n [passphrase]