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The Ubuntu operating system must require users to re-authenticate for privilege escalation and changing roles.


Finding ID Version Rule ID IA Controls Severity
V-219185 UBTU-18-010114 SV-219185r853371_rule Medium
Without re-authentication, users may access resources or perform tasks for which they do not have authorization. When the Ubuntu operating system provides the capability to escalate a functional capability or change security roles, it is critical the user re-authenticate. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157
Canonical Ubuntu 18.04 LTS Security Technical Implementation Guide 2022-12-06


Check Text ( C-20910r304883_chk )
Verify that "/etc/sudoers" has no occurrences of "NOPASSWD" or "!authenticate".

Check that 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-20909r304884_fix)
Remove any occurrence of "NOPASSWD" or "!authenticate" found in "/etc/sudoers" file or files in the /etc/sudoers.d directory.