Ubuntu 22.04 LTS must have system commands group-owned by "root" or a system account.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-260496	UBTU-22-232055	SV-260496r991560_rule		Medium

Description
If Ubuntu 22.04 LTS were to allow 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 Ubuntu 22.04 LTS 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. Only qualified and authorized individuals must be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.

Description

If Ubuntu 22.04 LTS were to allow 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 Ubuntu 22.04 LTS 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. Only qualified and authorized individuals must be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.

STIG	Date
Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide	2024-05-30

Details

Check Text ( C-64225r953299_chk )
Verify the system commands contained in the following directories are group-owned by "root" or a required system account by using the following command: $ sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin ! -group root -type f ! -perm /2000 -exec stat -c "%n %G" '{}' \; If any system commands are returned that are not Set Group ID upon execution (SGID) files and group-owned by a required system account, this is a finding.

Check Text ( C-64225r953299_chk )

Verify the system commands contained in the following directories are group-owned by "root" or a required system account by using the following command:

$ sudo find -L /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin ! -group root -type f ! -perm /2000 -exec stat -c "%n %G" '{}' \;

If any system commands are returned that are not Set Group ID upon execution (SGID) files and group-owned by a required system account, this is a finding.

Fix Text (F-64133r953300_fix)
Configure Ubuntu 22.04 LTS commands to be protected from unauthorized access. Run the following command, replacing "" with any system command not group-owned by "root" or a required system account: $ sudo chgrp root