Title

Ubuntu 24.04 LTS must require users to reauthenticate for privilege escalation or when changing roles. (Cat II impact)

Discussion

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.

Check Content

Verify the "/etc/sudoers" file has no occurrences of "NOPASSWD" or "!authenticate" with 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

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

Additional Identifiers

Rule ID: SV-270707r1066610_rule

Vulnerability ID: V-270707

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.