AlmaLinux OS 9 must be configured so that the file integrity tool verifies extended attributes.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-269241	SRG-OS-000480-GPOS-00227	ALMA-09-018280	SV-269241r1050123_rule	2025-02-20	1

Description
Extended attributes in file systems are used to contain arbitrary data and file metadata with security implications.

ℹ️ Check
Verify that AIDE is configured to verify extended attributes with the following command: $ grep xattrs /etc/aide.conf All= p+i+n+u+g+s+m+S+sha512+acl+xattrs+selinux If the "xattrs" rule is not being used on all uncommented selection lines in the "/etc/aide.conf" file, or extended attributes are not being checked by another file integrity tool, this is a finding. 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.

ℹ️ Check

Verify that AIDE is configured to verify extended attributes with the following command: $ grep xattrs /etc/aide.conf All= p+i+n+u+g+s+m+S+sha512+acl+xattrs+selinux If the "xattrs" rule is not being used on all uncommented selection lines in the "/etc/aide.conf" file, or extended attributes are not being checked by another file integrity tool, this is a finding. 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
Configure the file integrity tool to check file and directory extended attributes. If AIDE is installed, ensure the "xattrs" rule is present on all uncommented file and directory selection lists.