← Back to Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide

V-274858

CAT II (Medium)

Ubuntu 20.04 LTS must restrict privilege elevation to authorized personnel.

Rule ID

SV-274858r1106125_rule

STIG

Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide

Version

V2R4

CCIs

CCI-002038 CCI-004895

Discussion

If the "sudoers" file is not configured correctly, any user defined on the system can initiate privileged actions on the target system.

Check Content

Verify the operating system restricts privilege elevation to authorized personnel with the following command:

$ sudo grep -iwR 'ALL' /etc/sudoers /etc/sudoers.d/ | grep -v '#'

If either of the following entries are returned, this is a finding:

ALL     ALL=(ALL) ALL
ALL     ALL=(ALL:ALL) ALL

Fix Text

Configure the operating system to restrict privilege elevation to authorized personnel.

Remove the following entries from the /etc/sudoers file or any configuration file under /etc/sudoers.d/:

ALL     ALL=(ALL) ALL
ALL     ALL=(ALL:ALL) ALL