AlmaLinux OS 9 must encrypt 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-269514	ALMA-09-052710	SV-269514r1050397_rule		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-73545r1049899_chk)

Verify AlmaLinux OS 9 encrypts audit records offloaded onto a different system or media from the system being audited via rsyslog with the following command:

$ grep -i '$ActionSendStreamDriverMode' /etc/rsyslog.conf /etc/rsyslog.d/*.conf

/etc/rsyslog.d/stig.conf:$ActionSendStreamDriverMode 1

If the value of the "$ActionSendStreamDriverMode" option is not set to "1" or the line is commented out, this is a finding.

Fix Text (F-73446r1049900_fix)

Configure AlmaLinux OS 9 to encrypt offloaded audit records via rsyslog by setting the following options in "/etc/rsyslog.conf" or "/etc/rsyslog.d/[customfile].conf":

$ActionSendStreamDriverMode 1