The macOS system must be configured with the sudoers file configured to authenticate users on a per -tty basis.

From Apple OS X 10.13 Security Technical Implementation Guide

Associated with: CCI-000366

SV-96393r1_rule The macOS system must be configured with the sudoers file configured to authenticate users on a per -tty basis.

Vulnerability discussion

The "sudo" command must be configured to prompt for the administrator's password at least once in each newly opened Terminal window or remote logon session, as this prevents a malicious user from taking advantage of an unlocked computer or an abandoned logon session to bypass the normal password prompt requirement. Without the "tty_tickets" option, all open local and remote logon sessions would be authenticated to use sudo without a password for the duration of the configured password timeout window.

Check content

To check if the "tty_tickets" option is set for "/usr/bin/sudo", run the following command: /usr/bin/sudo /usr/bin/grep tty_tickets /etc/sudoers If there is no result, this is a finding.

Fix text

Edit the "/etc/sudoers" file to contain the line: Defaults tty_tickets This line can be placed in the defaults section or at the end of the file.

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