AlmaLinux OS 9 library directories must be group-owned by root or a system account.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-269172	ALMA-09-010580	SV-269172r1050054_rule		Medium

Description

If AlmaLinux OS 9 allowed any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requirement applies to AlmaLinux OS 9 with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges.

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

Details

Check Text (C-73203r1049248_chk)

Verify the systemwide shared library directories are group-owned by "root" with the following command:

$ find -L /lib /lib64 /usr/lib /usr/lib64 ! -group root -type d -exec stat -c "%n %G" '{}' \;

If any systemwide shared library directory is returned and is not group owned by a required system account, this is a finding.

Fix Text (F-73104r1049249_fix)

Configure the systemwide shared library directories (/lib, /lib64, /usr/lib and /usr/lib64) to be protected from unauthorized access.

Run the following command, replacing "[DIRECTORY]" with any library directory not group-owned by "root".

$ chgrp root [DIRECTORY]