The Ubuntu operating system must require users to reauthenticate for privilege escalation or when changing roles.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-238208 | UBTU-20-010014 | SV-238208r1015142_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 the user reauthenticate. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157 |
| STIG | Date |
| Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide | 2024-08-22 |
Details
| Check Text (C-41418r653797_chk) |
| Verify the "/etc/sudoers" file has no occurrences of "NOPASSWD" or "!authenticate" by running the following command: $ sudo egrep -i '(nopasswd|!authenticate)' /etc/sudoers /etc/sudoers.d/* If any occurrences of "NOPASSWD" or "!authenticate" return from the command, this is a finding. |
| Fix Text (F-41377r653798_fix) |
| Remove any occurrence of "NOPASSWD" or "!authenticate" found in "/etc/sudoers" file or files in the "/etc/sudoers.d" directory. |