RHEL 9 must require users to provide a password for privilege escalation.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-258106	RHEL-09-611085	SV-258106r1050789_rule		Medium

Description

Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When operating systems provide the capability to escalate a functional capability, it is critical that the user reauthenticate. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158

STIG	Date
Red Hat Enterprise Linux 9 Security Technical Implementation Guide	2024-12-04

Details

Check Text (C-61847r1045213_chk)

Verify that "/etc/sudoers" has no occurrences of "NOPASSWD" with the following command:

$ sudo grep -ri nopasswd /etc/sudoers /etc/sudoers.d/

If any occurrences of "NOPASSWD" are returned from the command and have not been documented with the information system security officer (ISSO) as an organizationally defined administrative group using MFA, this is a finding.

Fix Text (F-61771r1045214_fix)

Configure RHEL 9 to not allow users to execute privileged actions without authenticating with a password.

Remove any occurrence of "NOPASSWD" found in "/etc/sudoers" file or files in the "/etc/sudoers.d" directory.

$ sudo find /etc/sudoers /etc/sudoers.d -type f -exec sed -i '/NOPASSWD/ s/^/# /g' {} \;