AlmaLinux OS 9 must be configured so that the file integrity tool verifies Access Control Lists (ACLs).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-269239	ALMA-09-018060	SV-269239r1050121_rule		Medium

Description

ACLs can provide permissions beyond those permitted through the file mode and must be verified by the file integrity tools.

STIG	Date
CloudLinux AlmaLinux OS 9 Security Technical Implementation Guide	2025-05-22

Details

Check Text (C-73270r1048093_chk)

Verify that that AIDE is verifying ACLs with the following command:

$ grep acl /etc/aide.conf

All= p+i+n+u+g+s+m+S+sha512+acl+xattrs+selinux

If the "acl" rule is not being used on all uncommented selection lines in the "/etc/aide.conf" file, or ACLs are not being checked by another file integrity tool, this is a finding.

Fix Text (F-73171r1048094_fix)

Configure the file integrity tool to check file and directory ACLs.

If AIDE is installed, ensure the "acl" rule is present on all uncommented file and directory selection lists.