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UBTU-22-432011 Ubuntu 22.04 LTS must require users to provide a password for privilege escalation.

DISA STIG library V2R10
All changes in this version
first version loaded CAT II

Maps to IA-11, SC-11 via CCI-002038, CCI-004895

Title

Ubuntu 22.04 LTS must require users to provide a password for privilege escalation.

Control

Verify "/etc/sudoers" has no occurrences of "NOPASSWD" with the following command: $ sudo egrep -iR '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 multifactor authentication (MFA), this is a finding.

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 that the user reauthenticate. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157, SRG-OS-000373-GPOS-00158

Related controls

CCI-002038, CCI-004895

Fix

Configure the operating system 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' {} \;