AlmaLinux OS 9 must encrypt, via the gtls driver, the transfer of audit records offloaded onto a different system or media from the system being audited via rsyslog.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-269515 | ALMA-09-052820 | SV-269515r1050398_rule | CCI-001851 | medium |
| Description | ||||
| Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity. | ||||
| STIG | Date | |||
| CloudLinux AlmaLinux OS 9 Security Technical Implementation Guide | 2025-05-22 | |||
Details
Check Text (C-269515r1050398_chk)
Verify AlmaLinux OS 9 uses the gtls driver to encrypt audit records offloaded onto a different system or media from the system being audited with the following command:
$ grep -i '$DefaultNetstreamDriver' /etc/rsyslog.conf /etc/rsyslog.d/*.conf
/etc/rsyslog.d/stig.conf:$DefaultNetstreamDriver gtls
If the value of the "$DefaultNetstreamDriver" option is not set to "gtls" or the line is commented out, this is a finding.
Fix Text (F-73447r1049903_fix)
Configure AlmaLinux OS 9 to use the gtls driver to encrypt offloaded audit records by setting the following options in "/etc/rsyslog.conf" or "/etc/rsyslog.d/[customfile].conf":
$DefaultNetstreamDriver gtls