The SUSE operating system must reauthenticate users when changing authenticators, roles, or escalating privileges.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-234853	SLES-15-010450	SV-234853r854199_rule		High

Description
Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When the SUSE operating system provides the capability to change user authenticators, change security roles, or escalate a functional capability, it is critical the user reauthenticate. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158

STIG	Date
SUSE Linux Enterprise Server 15 Security Technical Implementation Guide	2023-09-08

Details

Check Text ( C-38041r618828_chk )
Verify that the SUSE operating system requires reauthentication when changing authenticators, roles, or escalating privileges. Check that "/etc/sudoers" has no occurrences of "NOPASSWD" or "!authenticate" with the following command: > sudo egrep -i '(nopasswd\|!authenticate)' /etc/sudoers If any uncommented lines containing "!authenticate", or "NOPASSWD" are returned and active accounts on the system have valid passwords, this is a finding.

Check Text ( C-38041r618828_chk )

Verify that the SUSE operating system requires reauthentication when changing authenticators, roles, or escalating privileges.

Check that "/etc/sudoers" has no occurrences of "NOPASSWD" or "!authenticate" with the following command:

> sudo egrep -i '(nopasswd|!authenticate)' /etc/sudoers

If any uncommented lines containing "!authenticate", or "NOPASSWD" are returned and active accounts on the system have valid passwords, this is a finding.

Fix Text (F-38004r618829_fix)
Configure the SUSE operating system to remove any occurrence of "NOPASSWD" or "!authenticate" found in the "/etc/sudoers" file. If the system does not use passwords for authentication, the "NOPASSWD" tag may exist in the file.